2024-03-29T15:49:00Zhttps://upcommons.upc.edu/oai/requestoai:upcommons.upc.edu:2117/3614362022-02-25T09:01:27Zcom_2117_79680com_2117_28579com_2117_28577com_2117_3837com_2117_28581com_2117_15797col_2117_79868col_2117_3838col_2117_3055openAccess
Sustainable Cities: A KPI-Driven Sustainable Evaluation Framework for Smart Cities
Quijano, Ana
Hernández, José Luis
Nouaille, Pierre
Virtanen, Mikko
Sánchez-Sarachu, Beatriz
Pardo Bosch, Francesc
Knieilng, Jörg
Universitat Politècnica de Catalunya. Departament d'Enginyeria de Projectes i de la Construcció
Universitat Politècnica de Catalunya. GRIC - Grup de Recerca i Innovació de la Construcció
Àrees temàtiques de la UPC::Desenvolupament humà i sostenible
Cities are currently dealing with the sustainable transition from carbon-based economies to carbon-neutral cities. The H2020 mySMARTLife project seeks to demonstrate innovative technologies through the implementation of about 150 innovative energy solutions in the cites of Nantes, Hamburg and Helsinki. The evaluation framework that was defined and validated in the project enables the assessment of the environmental, energy, economic, social, ICT and governance aspects of replicable and sustainable smart city solutions with a high market potential. The main features and the process for their definition will be described in this paper.
2022-02-02T09:20:47Z
2022-02-02T09:20:47Z
2021-12-01
Article
Quijano, A. [et al.]. Sustainable Cities: A KPI-Driven Sustainable Evaluation Framework for Smart Cities. "Environmental Sciences Proceedings", 1 Desembre 2021, vol. 11, núm. 1, p. 1-4.
2673-4931
http://hdl.handle.net/2117/361436
10.3390/environsciproc2021011021
eng
https://www.mdpi.com/2673-4931/11/1/21
info:eu-repo/grantAgreement/EC/H2020/731297/EU/Smart Transition of EU cities towards a new concept of smart Life and Economy/mySMARTLife
http://creativecommons.org/licenses/by/4.0/
Open Access
Attribution 4.0
east=-1.553621; north=47.218371; name=6C9W+8H Nantes, França
east=9.9936819; north=53.5510846; name=Plan 8, 20095 Hamburg, Alemanya
east=24.938379; north=60.16985569999999; name=Lasipalatsi, 00100 Helsinki, Finlàndia
MDPI AG
oai:upcommons.upc.edu:2117/3353272022-10-09T00:01:29Zcom_2117_79680com_2117_28579com_2117_28577com_2117_99671com_2117_28581com_2117_15797col_2117_79868col_2117_99679col_2117_3055
Análisis de las vibraciones y fluctuaciones de presión en una bomba turbina
Egusquiza Estévez, Eduard
Boldy, Adrian
Universitat Politècnica de Catalunya. Departament d'Enginyeria de Projectes i de la Construcció
Universitat Politècnica de Catalunya. CDIF - Centre de Diagnòstic Industrial i Fluidodinàmica
Àrees temàtiques de la UPC::Enginyeria mecànica
Àrees temàtiques de la UPC::Enginyeria mecànica::Mecànica
En este artículo se describe el análisis de las mediciones de presión no estacionaria y vibraciones en una bomba-turbina a fin de identificar el origen de las vibraciones en una estructura próxima a la central. Una excitación hidráulica a una frecuencia doble de la del paso de álabes era la causa de las vibraciones. La pulsación de presión generada por esta excitación se incrementaba debido a una resonancia hidráulica. Dicha pulsación generaba a su vez un elevado nivel de vibraciones debido a una resonancia mecánica en la estructura.
2021-01-14T11:49:32Z
1992-03
10000-01-01
Article
Egusquiza, E.; Boldy, A. Análisis de las vibraciones y fluctuaciones de presión en una bomba turbina. "Ingeniería civil (Madrid)", Març 1992, núm. 82, p. 183-188.
0213-8468
http://hdl.handle.net/2117/335327
spa
http://ingenieriacivil.cedex.es/index.php/ingenieria-civil/article/view/853
http://creativecommons.org/licenses/by-nc-nd/3.0/es/
Restricted access - publisher's policy
Attribution-NonCommercial-NoDerivs 3.0 Spain
oai:upcommons.upc.edu:2117/789112020-07-23T20:04:03Zcom_2117_79680com_2117_28579com_2117_28577com_2117_3837com_2117_28581com_2117_15797col_2117_79868col_2117_3838col_2117_3055openAccess
Handover defects: comparison of construction and post-handover housing defects
Forcada Matheu, Núria
Macarulla Martí, Marcel
Gangolells Solanellas, Marta
Casals Casanova, Miquel
Universitat Politècnica de Catalunya. Departament d'Enginyeria de Projectes i de la Construcció
Universitat Politècnica de Catalunya. GRIC - Grup de Recerca i Innovació de la Construcció
Àrees temàtiques de la UPC::Edificació::Gestió d'obres
This is an Accepted Manuscript of an article published by Taylor & Francis Group in Building research and information on 20/05/2015, available online: http://www.tandfonline.com/doi/abs/10.1080/09613218.2015.1039284
Although inspections occur during construction or at handover, customers do not normally participate. This situation creates a gap between the quality perceived by both contractors and customers. An analysis of 52 552 handover defects in 2179 flats in Spain is presented which identified their nature, the building element and trade where these defects are located. These results are compared with previous studies that analysed defects detected during the construction stage and those that remain after handing over the building to the client. The research reveals that structural defects are resolved during construction due to existing quality standards. However, other aesthetic and functional defects remain and/or arise at handover. Some defects are not resolved until customers complain after they first occupy the dwelling. Many functional defects arise due to the lack of involvement of end users in the early project stages.
2015-11-06T15:05:33Z
2016-06-01T00:30:53Z
2016-03
Article
Forcada, N., Macarulla, M., Gangolells, M., Casals, M. Handover defects: comparison of construction and post-handover housing defects. "Building research and information", Març 2016, vol. 44, núm. 3, p. 279-288.
0961-3218
http://hdl.handle.net/2117/78911
10.1080/09613218.2015.1039284
eng
http://www.tandfonline.com/doi/abs/10.1080/09613218.2015.1039284
Open Access
oai:upcommons.upc.edu:2117/912172020-07-23T20:04:11Zcom_2117_79680com_2117_28579com_2117_28577com_2117_79758com_2117_28581com_2117_15797col_2117_79868col_2117_79795col_2117_3055openAccess
Med-CORDEX initiative for Mediterranean climate studies
Ruti, Paolo M.
Somot, Samuel
Giorgi, Filippo
Gonçalves Ageitos, María
Universitat Politècnica de Catalunya. Departament d'Enginyeria de Projectes i de la Construcció
Universitat Politècnica de Catalunya. GReCT - Grup de Recerca de Ciències de la Terra
Àrees temàtiques de la UPC::Desenvolupament humà i sostenible::Prospectiva, sistèmica i modelització
Àrees temàtiques de la UPC::Desenvolupament humà i sostenible::Degradació ambiental::Canvi climàtic
The Med-CORDEX initiative is a unique framework in which the research community makes use of regional earth system models to increase the reliability of past and future regional climate information.
The Mediterranean is expected to be one of the most prominent and vulnerable climate change “hot spots” of the 21st century, and the physical mechanisms underlying this finding are still not clear. Furthermore complex interactions and feedbacks involving ocean-atmosphere-land-biogeochemical processes play a prominent role in modulating the climate and environment of the Mediterranean region on a range of spatial and temporal scales. Therefore it is critical to provide robust climate change information for use in Vulnerability/Impact/Adaptation assessment studies considering the Mediterranean as a fully coupled environmental system. The Med-CORDEX initiative aims at coordinating the Mediterranean climate modeling community towards the development of fully coupled regional climate simulations, improving all relevant components of the system, from atmosphere and ocean dynamics to land surface, hydrology and biogeochemical processes. The primary goals of Med-CORDEX are to improve understanding of past climate variability and trends, and to provide more accurate and reliable future projections, assessing in a quantitative and robust way the added value of using high resolution and coupled regional climate models. The coordination activities and the scientific outcomes of Med-CORDEX can produce an important framework to foster the development of regional earth system models in several key regions worldwide.
2016-10-28T13:12:31Z
2017-02-01T01:30:43Z
2016-07
Article
Ruti, P., Somot, S., Giorgi, F., Gonçalves, M. Med-CORDEX initiative for Mediterranean climate studies. "Bulletin of the American Meteorological Society", Juliol 2016, vol. 97, núm. 7, p. 1187-1208.
0003-0007
http://hdl.handle.net/2117/91217
10.1175/BAMS-D-14-00176.1
eng
http://journals.ametsoc.org/doi/abs/10.1175/BAMS-D-14-00176.1
Open Access
oai:upcommons.upc.edu:2117/1232552020-07-23T20:04:51Zcom_2117_79680com_2117_28579com_2117_28577com_2117_3837com_2117_28581com_2117_15797col_2117_79868col_2117_3838col_2117_3055openAccess
A System dynamics model to determine concession period of PPP infrastructure projects: the overarching effects of critical success factors
Ullah, Fahim
Thaheem, Muhammad Jamaluddin
Sepasgozar, Samad M. E.
Forcada Matheu, Núria
Universitat Politècnica de Catalunya. Departament d'Enginyeria de Projectes i de la Construcció
Universitat Politècnica de Catalunya. GRIC - Grup de Recerca i Innovació de la Construcció
Àrees temàtiques de la UPC::Edificació::Indústria de la construcció
Àrees temàtiques de la UPC::Economia i organització d'empreses
The determination of the concession period (CP) in public–private partnership (PPP) infrastructure projects presents complexities to decision makers because various critical success factors (CSF) are involved which may be overlooked. This paper outlines a system dynamics (SD)-based approach to provide an in-depth understanding of CSFs that determines PPP projects’ CP and models them for localized use. The CSFs are obtained from published literature, duly vetted through a survey of 56 experts, and used to develop a quantitative and qualitative SD model, validated by simulating case studies of five infrastructure projects. A total of 59 concession-affecting CSFs are highlighted that are reduced and compared for localized infrastructure projects. The findings indicate that CP should be dynamic instead of fixed and static, and warrant an extension of the originally proposed concession in three cases and reduction in the remaining two. The decision-making implications of this study target the three key stakeholders: the public body through reduced financial risks, the private organization through increased confidence and reassessment of concession during project life, and the end user through nominal tolls.
2018-10-30T13:48:41Z
2018-11
10000-01-01
Article
Ullah, F., Thaheem, M., Sepasgozar, S., Forcada, N. A System dynamics model to determine concession period of PPP infrastructure projects: the overarching effects of critical success factors. "Journal of Legal Affairs and Dispute Resolution in Engineering and Construction", Novembre 2018, vol. 10, núm. 4, p. 04518022-1-04518022-12.
1943-4170
http://hdl.handle.net/2117/123255
10.1061/(ASCE)LA.1943-4170.0000280
eng
https://ascelibrary.org/doi/pdf/10.1061/%28ASCE%29LA.1943-4170.0000280
Open Access
AMERICAN SOCIETY OF CIVIL ENGINEERS
oai:upcommons.upc.edu:2117/809182020-07-23T20:04:51Zcom_2117_79680com_2117_28579com_2117_28577com_2117_79679com_2117_79723com_2117_28581com_2117_3837com_2117_15797col_2117_79868col_2117_79694col_2117_79768col_2117_3838col_2117_3055openAccess
SHM by DOFS in civil engineering: a review
Casas Rius, Joan Ramon
Rodríguez, Gerardo
Villalba Herrero, Sergi
Universitat Politècnica de Catalunya. Departament d'Enginyeria Civil i Ambiental
Universitat Politècnica de Catalunya. Departament d'Enginyeria de Projectes i de la Construcció
Universitat Politècnica de Catalunya. EC - Enginyeria de la Construcció
Universitat Politècnica de Catalunya. GRIC - Grup de Recerca i Innovació de la Construcció
Àrees temàtiques de la UPC::Enginyeria civil::Materials i estructures
Àrees temàtiques de la UPC::Enginyeria de la telecomunicació::Telecomunicació òptica::Fibra òptica
This paper provides an overview of the use of different Distributed Optical Fiber Sensor systems (DOFSs) to perform Structural Health Monitoring (SHM) in the specific case of civil engineering structures. Nowadays, there are several methods available for extracting distributed measurements from optical fiber, and their use have to be according with the aims of the SHM performance. The continuous-in-space data is the common advantage of the different DOFSs over other conventional health monitoring systems and, depending on the particular characteristics of each DOFS, a global and/or local health structural evaluation is possible with different accuracy. Firstly, the fundamentals of different DOFSs and their principal advantages and disadvantages are presented. Then, laboratory and field tests using different DOFSs systems to measure strain in structural elements and civil structures are presented and discussed. Finally, based on the current applications, conclusions and future trends of DOFSs in SHM in civil structures are proposed.
2015-12-18T18:31:14Z
2015-12-18T18:31:14Z
2015-12
Article
Casas, J., Rodríguez, G., Villalba, S. SHM by DOFS in civil engineering: a review. "Structural Monitoring and Maintenance", Desembre 2015, vol. 2, núm. 4, p. 357-382.
2288-6605
http://hdl.handle.net/2117/80918
10.12989/smm.2015.2.4.357
eng
http://www.techno-press.org/download.php?journal=smm&volume=2&num=4&ordernum=4
Open Access
oai:upcommons.upc.edu:2117/3303622021-06-06T00:25:21Zcom_2117_3480com_2117_28581com_2117_28577com_2117_79680com_2117_28579com_2117_79677com_2117_98851com_2117_15797col_2117_3481col_2117_79868col_2117_79695col_2117_103655col_2117_3055
Attitude control for satellites flying in VLEO using aerodynamic surfaces
Cañas Muñoz, Valentin
González, David
Becedas, Jonathan
Rodríguez Donaire, Silvia
García-Almiñana, Daniel
Sureda Anfres, Miquel
Nieto, Miriam
Muñoz, Candia
Universitat Politècnica de Catalunya. Departament d'Enginyeria de Projectes i de la Construcció
Universitat Politècnica de Catalunya. Departament de Física
Universitat Politècnica de Catalunya. TUAREG - Turbulence and Aerodynamics in Mechanical and Aerospace Engineering Research Group
Universitat Politècnica de Catalunya. L'AIRE - Laboratori Aeronàutic i Industrial de Recerca i Estudis
Àrees temàtiques de la UPC::Enginyeria de la telecomunicació::Radiocomunicació i exploració electromagnètica::Satèl·lits i ràdioenllaços
Àrees temàtiques de la UPC::Física::Astronomia i astrofísica
This paper analyses the use of aerodynamic control surfaces, whether passive or active, in order to carry out very low Earth orbit (VLEO) attitude maneuver operations. Flying a satellite in a very low Earth orbit with an altitude of less than 450 km, namely VLEO, is a technological challenge. It leads to several advantages, such as increasing the resolution of optical payloads or increase signal to noise ratio, among others. The atmospheric density in VLEO is much higher than in typical low earth orbit altitudes, but still free molecular flow. This has serious consequences for the maneuverability of a satellite because significant aerodynamic torques and forces are produced. In order to guarantee the controllability of the spacecraft they have to be analyzed in depth. Moreover, at VLEO the density of atomic oxygen increases, which enables the use of air-breathing propulsion (ABEP). Scientists are researching in this field to use ABEP it as a drag compensation system, and consequently an attitude control based on aerodynamic control could make sense. This combination of technologies may represent an opportunity to open new markets.In this work, several satellite geometric configurations were considered to analyze aerodynamic control:3 axis control with feather configuration and 2 axis controlwith shuttlecock configuration.The analysis was performed by simulating the attitude of the satellite as well as the disturbances affecting the spacecraft. The models implemented to simulate the disturbances were the following: Gravitational gradient torque disturbance, magnetic dipole torque disturbance (magnetic field model IGRF12), and aerodynamic torque disturbances (aerodynamic model DTM2013 and wind model HWM14). The maneuvers analyzedwere the following: detumbling orattitude stabilization, pointing and demisability. Different VLEO parameterswere analyzed for every geometric configuration and spacecraft maneuver. The results determined which of the analyzed geometric configurations suits better for every maneuver. This work is part of the H2020 DISCOVERER project. Project ID 737183
2020-10-16T11:20:31Z
2020
10000-01-01
Article
Cañas, V. [et al.]. Attitude control for satellites flying in VLEO using aerodynamic surfaces. "JBIS: journal of the British Interplanetary Society", 2020, vol. 73, p. 103-112.
0007-084X
http://hdl.handle.net/2117/330362
eng
https://www.jbis.org.uk/paper/2020.73.103
info:eu-repo/grantAgreement/EC/H2020/737183/EU/DISCOVERER – DISruptive teChnOlogies for VERy low Earth oRbit platforms/DISCOVERER
Restricted access - publisher's policy
British Interplanetary Society
oai:upcommons.upc.edu:2117/3353952023-11-12T01:07:09Zcom_2117_79680com_2117_28579com_2117_28577com_2117_184554com_2117_184544com_2117_3837com_2117_28581com_2117_15797col_2117_79868col_2117_184712col_2117_3838col_2117_3055openAccess
Enhancing occupants' comfort through BIM-based probabilistic approach
Alavi, Hamidreza
Forcada Matheu, Núria
Bortolini, Rafaela
Edwards, David J.
Universitat Politècnica de Catalunya. Doctorat en Enginyeria de la Construcció
Universitat Politècnica de Catalunya. Departament d'Enginyeria de Projectes i de la Construcció
Universitat Politècnica de Catalunya. GRIC - Grup de Recerca i Innovació de la Construcció
Despite the fact that buildings are designed to meet occupants’ needs, many do not perform as planned, impacting upon both building performance and occupants’ comfort. Analyzing occupants’ comfort based on questionnaire surveys requires specific information and appropriate use of visualization techniques to identify possible dissatisfactory problems. However, existing studies do not provide a user-friendly visualization and are not interoperable with Building Information Modeling (BIM) to facilitate the data collection. This paper proposes a novel approach for integrating occupants’ feedback and an occupants’ comfort probabilistic model into BIM. It also presents innovative techniques to facilitate BIM as a more effective platform for visualization to guide decision-makers in addressing building operational problems centered on occupants’ comfort. Findings from this research can assist facility managers and owners in identifying causal factors of occupants’ discomfort and properly establishing the necessary measurements to moderate the negative consequences on occupants and thereby improve their comfort.
2021-01-15T11:16:42Z
2023-02-01T01:25:17Z
2021-03
Article
Alavi, S. [et al.]. Enhancing occupants' comfort through BIM-based probabilistic approach. "Automation in construction", Març 2021, vol. 123, p. 103528/1-103528/14.
0926-5805
http://hdl.handle.net/2117/335395
10.1016/j.autcon.2020.103528
eng
https://www.sciencedirect.com/science/article/abs/pii/S0926580520311080?via%3Dihub
http://creativecommons.org/licenses/by-nc-nd/4.0/
Open Access
Attribution-NonCommercial-NoDerivs 4.0
oai:upcommons.upc.edu:2117/1693372022-05-17T10:14:12Zcom_2117_79680com_2117_28579com_2117_28577com_2117_79679com_2117_79723com_2117_28581com_2117_3837com_2117_15797col_2117_79868col_2117_79694col_2117_79768col_2117_3838col_2117_3055openAccess
Shear crack pattern identification in concrete elements via distributed optical fibre grid
Rodríguez Gutiérrez, Gerardo
Casas Rius, Joan Ramon
Villalba Herrero, Sergi
Universitat Politècnica de Catalunya. Departament d'Enginyeria Civil i Ambiental
Universitat Politècnica de Catalunya. Departament d'Enginyeria de Projectes i de la Construcció
Universitat Politècnica de Catalunya. EC - Enginyeria de la Construcció
Universitat Politècnica de Catalunya. GRIC - Grup de Recerca i Innovació de la Construcció
Àrees temàtiques de la UPC::Enginyeria civil::Materials i estructures::Materials i estructures de formigó
This is an Accepted Manuscript of an article published by Taylor & Francis Group in "Structure and infrastructure engineering: maintenance, management, life-cycle design and performance" on 2019, available online at: http://www.tandfonline.com/10.1080/15732479.2019.1640256
An experimental methodology to obtain the shear cracking pattern in concrete elements is presented. The method is based on the use of Distributed Optical Fiber Sensors (DOFS) connected to an Optical Backscattered Reflectometer (OBR). Using this OBR system and a 2D grid conformed by one or two DOFS, the crack patterns of three partially pre-stressed concrete (PPC) beams subjected experimentally to shear failure, were obtained for increasing level of load. The 2D distributed fiber optic sensoring mesh was formed by attaching the fiber to the shear span of each beam using an epoxy adhesive. The importance of a correct DOFS attaching procedure to the concrete surface to obtain accurate results is described, and the principal advantages of DOFS to complement the use of discrete sensors in concrete experimental shear tests are shown. The proposed technique is a powerful tool to be implemented in the structural health monitoring in shear of concrete structures, where the variable inclined cracks are difficult to monitor by other experimental techniques using discrete sensors.
2019-10-07T23:16:07Z
2020-07-23T00:25:43Z
2019-12
Article
Rodríguez , G.; Casas, J.; Villalba, S. Shear crack pattern identification in concrete elements via distributed optical fibre grid. "Structure and infrastructure engineering: maintenance, management, life-cycle design and performance", Desembre 2019, vol. 15, núm. 12, p. 1630-1648.
1573-2479
http://hdl.handle.net/2117/169337
10.1080/15732479.2019.1640256
eng
https://www.tandfonline.com/doi/abs/10.1080/15732479.2019.1640256?journalCode=nsie20
info:eu-repo/grantAgreement/MINECO//BIA2012-36848/ES/PROYECTO BASADO EN PRESTACIONES DE ESTRUCTURAS DE HORMIGON PARCIALMENTE PRETENSADAS. PROPUESTA DE NUEVA METODOLOGIA, VERIFICACION EXPERIMENTAL Y CRITERIOS DE PROYECTO./
info:eu-repo/grantAgreement/MINECO//BIA2013-47290-R/ES/SISTEMA DE APOYO A LA TOMA DE DECISIONES DURANTE EL CICLO DE VIDA DE LAS INFRAESTRUCTURAS: SMART-INFRASTRUCTURES/
http://creativecommons.org/licenses/by-nc-nd/3.0/es/
Open Access
Attribution-NonCommercial-NoDerivs 3.0 Spain
oai:upcommons.upc.edu:2117/1701592022-09-11T00:06:34Zcom_2117_79680com_2117_28579com_2117_28577com_2117_3320com_2117_28581com_2117_184550com_2117_184544com_2117_77490com_2117_28578com_2117_3941com_2117_3307com_2117_15797col_2117_79868col_2117_3321col_2117_184598col_2117_77492col_2117_3942col_2117_3308col_2117_3055openAccess
The effects of lithium sulfur battery ageing on second-life possibilities and environmental life cycle assessment studies
Wolff, Deidre
Canals Casals, Lluc
Benveniste Pérez, Gabriela
Corchero García, Cristina
Trilla Romero, Lluís
Universitat Politècnica de Catalunya. Departament d'Enginyeria de Projectes i de la Construcció
Universitat Politècnica de Catalunya. Doctorat en Enginyeria Ambiental
Universitat Politècnica de Catalunya. Departament d'Estadística i Investigació Operativa
Institut de Recerca en Energía de Catalunya
Universitat Politècnica de Catalunya. GIIP - Grup de Recerca en Enginyeria de Projectes: Disseny i Sostenibilitat
Universitat Politècnica de Catalunya. GNOM - Grup d'Optimització Numèrica i Modelització
Àrees temàtiques de la UPC::Energies
The development of Li-ion batteries has enabled the re-entry of electric vehicles into the market. As car manufacturers strive to reach higher practical specific energies (550 Wh/kg) than what is achievable for Li-ion batteries, new alternatives for battery chemistry are being considered. Li-Sulfur batteries are of interest due to their ability to achieve the desired practical specific energy. The research presented in this paper focuses on the development of the Li-Sulfur technology for use in electric vehicles. The paper presents the methodology and results for endurance tests conducted on in-house manufactured Li-S cells under various accelerated ageing conditions. The Li-S cells were found to reach 80% state of health after 300–500 cycles. The results of these tests were used as the basis for discussing the second life options for Li-S batteries, as well as environmental Life Cycle Assessment results of a 50 kWh Li-S battery
2019-10-16T07:08:23Z
2019-10-16T07:08:23Z
2019-01-01
Article
Wolff, D. [et al.]. The effects of lithium sulfur battery ageing on second-life possibilities and environmental life cycle assessment studies. "Energies", 1 Gener 2019, vol. 12, núm. 12, p. 2440:1-2440:19.
1996-1073
http://hdl.handle.net/2117/170159
10.3390/en12122440
eng
https://www.mdpi.com/1996-1073/12/12/2440
info:eu-repo/grantAgreement/EC/H2020/666221/EU/High energy lithium sulphur cells and batteries/HELIS
http://creativecommons.org/licenses/by-nc-nd/3.0/es/
Open Access
Attribution-NonCommercial-NoDerivs 3.0 Spain
oai:upcommons.upc.edu:2117/3630792022-02-25T09:00:46Zcom_2117_79680com_2117_28579com_2117_28577com_2117_3837com_2117_28581com_2117_15797col_2117_79868col_2117_3838col_2117_3055openAccess
Towards Sustainable and Smart Cities: Replicable and KPI-Driven Evaluation Framework
Quijano, Ana
Hernández, José Luis
Nouaille, Pierre
Virtanen, Mikko
Sánchez-Sarachu, Beatriz
Pardo Bosch, Francesc
Knieilng, Jörg
Universitat Politècnica de Catalunya. Departament d'Enginyeria de Projectes i de la Construcció
Universitat Politècnica de Catalunya. GRIC - Grup de Recerca i Innovació de la Construcció
Àrees temàtiques de la UPC::Desenvolupament humà i sostenible
Sustainability is pivotal in the urban transformation strategy in order to reach more resource-efficient, resilient and smarter cities. The goal of being a sustainable city should drive the decisions for city interventions, and measuring city progress is a key step for this process. There are many initiatives aiming at defining indicators and assessment procedures, but there is no convergence in the definition of terms and application methodologies, making their real implementation complex. Within mySMARTLife project (GA#731297), a KPI-driven evaluation framework has been defined with the aim of covering the multiple pillars of a smart and sustainable city (i.e., environment, energy, mobility, ICT, citizens, economy, governance) in a holistic way. This methodology also defines the concepts and terms to guide urban planners and/or experts at the time of implementing the framework for any specific city. The evaluation framework has been deployed in the cities of Nantes, Hamburg and Helsinki, and some lessons have been learned, such as the necessity of providing a definition of measurement boundary to avoid biased interpretations. Due to a co-creation strategy, the main issues from the cities have been taken into consideration in order to increase the replicability of the results.
2022-02-25T08:55:15Z
2022-02-25T08:55:15Z
2022-02-17
Article
Quijano, A. [et al.]. Towards Sustainable and Smart Cities: Replicable and KPI-Driven Evaluation Framework. "Buildings", 17 Febrer 2022, vol. 12, núm. 2, p. 233:1-233:12.
2075-5309
http://hdl.handle.net/2117/363079
10.3390/buildings12020233
eng
https://www.mdpi.com/2075-5309/12/2/233
info:eu-repo/grantAgreement/EC/H2020/731297/EU/Smart Transition of EU cities towards a new concept of smart Life and Economy/mySMARTLife
http://creativecommons.org/licenses/by/4.0/
Open Access
Attribution 4.0
east=-1.553621; north=47.218371; name=2 Rue Saint-Jean, 44000 Nantes, França
east=9.9936818; north=53.5510846; name=Plan 8, 20095 Hamburg, Alemanya
east=24.938379; north=60.16985569999999; name=Lasipalatsi, 00100 Helsinki, Finlàndia
oai:upcommons.upc.edu:2117/3354502023-04-01T00:25:20Zcom_2117_3480com_2117_28581com_2117_28577com_2117_79680com_2117_28579com_2117_79677com_2117_98851com_2117_15797col_2117_3481col_2117_79868col_2117_79695col_2117_103655col_2117_3055openAccess
In-orbit aerodynamic coefficient measurements using SOAR (Satellite for Orbital Aerodynamics Research)
Crisp, Nicholas H.
Roberts, Peter C.E
Livadiotti, Sabrina
García-Almiñana, Daniel
Rodríguez Donaire, Silvia
Sureda Anfres, Miquel
Universitat Politècnica de Catalunya. Departament d'Enginyeria de Projectes i de la Construcció
Universitat Politècnica de Catalunya. Departament de Física
Universitat Politècnica de Catalunya. TUAREG - Turbulence and Aerodynamics in Mechanical and Aerospace Engineering Research Group
Universitat Politècnica de Catalunya. L'AIRE - Laboratori Aeronàutic i Industrial de Recerca i Estudis
Àrees temàtiques de la UPC::Aeronàutica i espai::Astronàutica
Àrees temàtiques de la UPC::Física::Astronomia i astrofísica
The Satellite for Orbital Aerodynamics Research (SOAR) is a CubeSat mission, due to be launched in 2021, to investigate the interaction between different materials and the atmospheric flow regime in very low Earth orbits (VLEO). Improving knowledge of the gas–surface interactions at these altitudes and identification of novel materials that can minimise drag or improve aerodynamic control are important for the design of future spacecraft that can operate in lower altitude orbits. Such satellites may be smaller and cheaper to develop or can provide improved Earth observation data or communications link-budgets and latency. In order to achieve these objectives, SOAR features two payloads: (i) a set of steerable fins which provide the ability to expose different materials or surface finishes to the oncoming flow with varying angle of incidence whilst also providing variable geometry to investigate aerostability and aerodynamic control; and (ii) an ion and neutral mass spectrometer with time-of-flight capability which enables accurate measurement of the in-situ flow composition, density, velocity. Using precise orbit and attitude determination information and the measured atmospheric flow characteristics the forces and torques experienced by the satellite in orbit can be studied and estimates of the aerodynamic coefficients calculated. This paper presents the scientific concept and design of the SOAR mission. The methodology for recovery of the aerodynamic coefficients from the measured orbit, attitude, and in-situ atmospheric data using a least-squares orbit determination and free-parameter fitting process is described and the experimental uncertainty of the resolved aerodynamic coefficients is estimated. The presented results indicate that the combination of the satellite design and experimental methodology are capable of clearly illustrating the variation of drag and lift coefficient for differing surface incidence angle. The lowest uncertainties for the drag coefficient measurement are found at approximately 300 km, whilst the measurement of lift coefficient improves for reducing orbital altitude to 200 km.
2021-01-18T12:52:05Z
2023-04-01T00:25:20Z
2021-03
Article
Crisp, N. [et al.]. In-orbit aerodynamic coefficient measurements using SOAR (Satellite for Orbital Aerodynamics Research). "Acta astronautica", Març 2021, vol. 180, p. 85-99.
0094-5765
https://arxiv.org/abs/2012.07407
http://hdl.handle.net/2117/335450
10.1016/j.actaastro.2020.12.024
eng
https://www.sciencedirect.com/science/article/pii/S0094576520307591?dgcid=coauthor
info:eu-repo/grantAgreement/EC/H2020/737183/EU/DISCOVERER – DISruptive teChnOlogies for VERy low Earth oRbit platforms/DISCOVERER
http://creativecommons.org/licenses/by-nc-nd/4.0/
Open Access
Attribution-NonCommercial-NoDerivs 4.0
oai:upcommons.upc.edu:2117/1208152022-10-09T00:09:49Zcom_2117_79680com_2117_28579com_2117_28577com_2117_79679com_2117_79723com_2117_28581com_2117_15797col_2117_79868col_2117_79694col_2117_79768col_2117_3055openAccess
The need to consider flexural post-cracking creep behavior of macro-synthetic fiber reinforced concrete
Pujadas Álvarez, Pablo
Blanco Álvarez, Ana
Pialarissi Cavalaro, Sergio Henrique
Fuente Antequera, Albert de la
Aguado de Cea, Antonio
Universitat Politècnica de Catalunya. Departament d'Enginyeria de Projectes i de la Construcció
Universitat Politècnica de Catalunya. Departament d'Enginyeria Civil i Ambiental
Universitat Politècnica de Catalunya. EC - Enginyeria de la Construcció
Àrees temàtiques de la UPC::Enginyeria civil::Materials i estructures::Materials i estructures de formigó
The flexural creep of plastic fiber reinforced concrete (PFRC) is a controversial issue since significant doubts regarding the suitability of this type of fiber and its influence in the long-term behavior of the material still exist. The objective of this paper is to evaluate the post-cracking creep response of PFRC beams under flexural load in comparison with that of steel fiber reinforced concrete (SFRC) beams. The aim is to explore how the pre-crack opening and the environmental condition affect the long term behavior of each material and identify differences. An experimental program was conducted with 30 concrete beams with dimension of 150 × 150 × 600 mm reinforced with plastic or steel fibers subjected to a 4-point bending creep test for 5 months under 2 environmental conditions. Results showed that the flexural creep coefficient of PFRC is 2 times bigger than that of SFRC. Despite that, the use of plastic fibers as reinforcement should not be rejected as long as the additional creep is considered in the design and the crack widths are limited to reduce the risk of tertiary creep.
2018-09-04T13:22:15Z
2019-10-01T00:25:53Z
2017-09
Article
Pujadas, P., Blanco, A., Pialarissi Cavalaro, S.H., de la Fuente, A., Aguado, A. The need to consider flexural post-cracking creep behavior of macro-synthetic fiber reinforced concrete. "Construction & building materials", Setembre 2017, vol. 149, núm. 15, p. 790-800.
0950-0618
http://hdl.handle.net/2117/120815
10.1016/j.conbuildmat.2017.05.166
eng
http://www.sciencedirect.com/science/article/pii/S0950061817310607
http://creativecommons.org/licenses/by-nc-nd/3.0/es/
Open Access
Attribution-NonCommercial-NoDerivs 3.0 Spain
Elsevier
oai:upcommons.upc.edu:2117/3361812021-11-14T01:08:36Zcom_2117_79680com_2117_28579com_2117_28577com_2117_15797col_2117_79868col_2117_3055openAccess
Key aspects of building retrofitting: Strategizing sustainable cities
Pardo Bosch, Francesc
Cevera, Carles
Ysa, Tamyko
Universitat Politècnica de Catalunya. Departament d'Enginyeria de Projectes i de la Construcció
Àrees temàtiques de la UPC::Desenvolupament humà i sostenible
Àrees temàtiques de la UPC::Economia i organització d'empreses
Many cities are making efforts to develop an urban transformation strategy in order to transition from traditional cities to sustainable ones. Improving the energy efficiency of buildings, especially existing ones, is key to combating climate change. This paper uses a business perspective to analyze and compare three major retro-fitting interventions under implementation in three different European cities, Nantes, Hamburg and Helsinki, to capture the principal needs and challenges and to identify governance recommendations for local authorities onbuilding retrofitting replication and scale-up strategies. The authors analyze the municipal business models of residential building retrofitting interventions, which are very different from those of private companies, through two innovative business tools: the Value Creation Ecosystem (VCE) and the City Model Canvas (CMC).Sustainable development in terms of social inclusion, environmental protection and financial viability is the principal axis of the study. The bottleneck for residential building retrofitting is owner engagement, due to the high up-front cost. The analysis of the three cities' business models has shown interesting ideas for promoting this type of interventions. The development of a costumer customer interface lead by the municipality; theoffering of funding schemes, the promotion of risk-sharing schemes and guaranteed saving, through the implementation of EPC, and the owners' involvement in co-creation strategies using 4 P approaches could all help city governments to increase the ratio of owners willing to participate. These results and the discussion will help public managers to prepare their cities’strategies in terms of business models when they try to implement building retrofitting projects
2021-01-28T14:38:18Z
2021-01-28T14:38:18Z
2019-10
Article
Pardo, F.; Cevera, C.; Ysa, T. Key aspects of building retrofitting: Strategizing sustainable cities. "Journal of environmental management", Octubre 2019, vol. 248, p. 109247/1-109247/14.
0301-4797
http://hdl.handle.net/2117/336181
10.1016/j.jenvman.2019.07.018
eng
https://www.sciencedirect.com/science/article/pii/S0301479719309491
http://creativecommons.org/licenses/by-nc-nd/4.0/
Open Access
Attribution-NonCommercial-NoDerivs 4.0
oai:upcommons.upc.edu:2117/3608202024-03-10T03:27:35Zcom_2117_79680com_2117_28579com_2117_28577com_2117_80518com_2117_23714com_2117_28578com_2117_15797col_2117_79868col_2117_80537col_2117_3055openAccess
Assimilating spaceborne lidar dust extinction can improve dust forecasts
Escribano Alisio, Jeronimo
di Tomaso, Enza
Jorba Casellas, Oriol
Klose, Martina
Gonçalves Ageitos, María
Macchia, Francesca
Amiridis, Vassilis
Baars, Holger
Marinou, Eleni
Proestakis, Emmanouil
Urbanneck, Claudia
Althausen, Dietrich
Bühl, Johannes
Mamouri, Rodanthi-Elisavet
Pérez García-Pando, Carlos
Universitat Politècnica de Catalunya. Departament d'Enginyeria de Projectes i de la Construcció
Barcelona Supercomputing Center
Àrees temàtiques de la UPC::Enginyeria química::Química del medi ambient::Química atmosfèrica
Àrees temàtiques de la UPC::Enginyeria de la telecomunicació::Radiocomunicació i exploració electromagnètica::Teledetecció
Atmospheric mineral dust has a rich tri-dimensional spatial and temporal structure that is poorly constrained in forecasts and analyses when only column-integrated aerosol optical depth (AOD) is assimilated. At present, this is the case of most operational global aerosol assimilation products. Aerosol vertical distributions obtained from spaceborne lidars can be assimilated in aerosol models, but questions about the extent of their benefit upon analyses and forecasts along with their consistency with AOD assimilation remain unresolved. Our study thoroughly explores the added value of assimilating spaceborne vertical dust profiles, with and without the joint assimilation of dust optical depth (DOD). We also discuss the consistency in the assimilation of both sources of information and analyse the role of the smaller footprint of the spaceborne lidar profiles in the results. To that end, we have performed data assimilation experiments using dedicated dust observations for a period of 2 months over northern Africa, the Middle East, and Europe. We assimilate DOD derived from the Visible Infrared Imaging Radiometer Suite (VIIRS) on board Suomi National Polar-Orbiting Partnership (SUOMI-NPP) Deep Blue and for the first time Cloud-Aerosol Lidar with Orthogonal Polarisation (CALIOP)-based LIdar climatology of Vertical Aerosol Structure for space-based lidar simulation studies (LIVAS) pure-dust extinction coefficient profiles on an aerosol model. The evaluation is performed against independent ground-based DOD derived from AErosol RObotic NETwork (AERONET) Sun photometers and ground-based lidar dust extinction profiles from the Cyprus Clouds Aerosol and Rain Experiment (CyCARE) and PREparatory: does dust TriboElectrification affect our ClimaTe (Pre-TECT) field campaigns. Jointly assimilating LIVAS and Deep Blue data reduces the root mean square error (RMSE) in the DOD by 39 % and in the dust extinction coefficient by 65 % compared to a control simulation that excludes assimilation. We show that the assimilation of dust extinction coefficient profiles provides a strong added value to the analyses and forecasts. When only Deep Blue data are assimilated, the RMSE in the DOD is reduced further, by 42 %. However, when only LIVAS data are assimilated, the RMSE in the dust extinction coefficient decreases by 72 %, the largest improvement across experiments. We also show that the assimilation of dust extinction profiles yields better skill scores than the assimilation of DOD under an equivalent sensor footprint. Our results demonstrate the strong potential of future lidar space missions to improve desert dust forecasts, particularly if they foresee a depolarization lidar channel to allow discrimination of desert dust from other aerosol types.
2022-01-27T09:01:46Z
2022-01-27T09:01:46Z
2022-01-14
Article
Escribano, J. [et al.]. Assimilating spaceborne lidar dust extinction can improve dust forecasts. "Atmospheric chemistry and physics", 14 Gener 2022, vol. 22, núm. 1, p. 535-560.
1680-7316
http://hdl.handle.net/2117/360820
10.5194/acp-22-535-2022
eng
https://acp.copernicus.org/articles/22/535/2022/
info:eu-repo/grantAgreement/EC/H2020/654109/EU/Aerosols, Clouds, and Trace gases Research InfraStructure/ACTRIS-2
info:eu-repo/grantAgreement/EC/FP7/262254/EU/Aerosols, Clouds, and Trace gases Research Infrastructure Network/ACTRIS
info:eu-repo/grantAgreement/EC/H2020/754433/EU/SupercompuTing And Related applicationS Fellows Program/STARS
info:eu-repo/grantAgreement/EC/H2020/773051/EU/FRontiers in dust minerAloGical coMposition and its Effects upoN climaTe/FRAGMENT
info:eu-repo/grantAgreement/EC/H2020/789630/EU/Addressing key uncertainties in mineral DUST EmiSsion modelling to better constrain the global dust cycle/DUST.ES
https://creativecommons.org/licenses/by/4.0/
Open Access
Attribution 4.0 International
European Geosciences Union (EGU)
oai:upcommons.upc.edu:2117/1009922024-03-10T03:28:58Zcom_2117_79680com_2117_28579com_2117_28577com_2117_80518com_2117_23714com_2117_28578col_2117_79868col_2117_80537openAccess
Description and evaluation of the Multiscale Online Nonhydrostatic AtmospheRe CHemistry model (NMMB-MONARCH) version 1.0: gas-phase chemistry at global scale
Badia, Alba
Jorba, Oriol
Voulgarakis, Apostolos
Dabdub, Donald
Pérez García-Pando, Carlos
Hilboll, Andreas
Gonçalves Ageitos, María
Zavisa, Janjic
Barcelona Supercomputing Center
Universitat Politècnica de Catalunya. Departament d'Enginyeria de Projectes i de la Construcció
Àrees temàtiques de la UPC::Energies
This paper presents a comprehensive description and benchmark evaluation of the tropospheric gas-phase chemistry component of the Multiscale Online Nonhydrostatic AtmospheRe CHemistry model (NMMB-MONARCH), formerly known as NMMB/BSC-CTM, that can be run on both regional and global domains. Here, we provide an extensive evaluation of a global annual cycle simulation using a variety of background surface stations (EMEP, WDCGG and CASTNET), ozonesondes (WOUDC, CMD and SHADOZ), aircraft data (MOZAIC and several campaigns), and satellite observations (SCIAMACHY and MOPITT). We also include an extensive discussion of our results in comparison to other state-of-the-art models. We note that in this study, we omitted aerosol processes and some natural emissions (lightning and volcano emissions).
The model shows a realistic oxidative capacity across the globe. The seasonal cycle for CO is fairly well represented at different locations (correlations around 0.3–0.7 in surface concentrations), although concentrations are underestimated in spring and winter in the Northern Hemisphere, and are overestimated throughout the year at 800 and 500 hPa in the Southern Hemisphere.
Nitrogen species are well represented in almost all locations, particularly NO2 in Europe (root mean square error – RMSE – below 5 ppb). The modeled vertical distributions of NOx and HNO3 are in excellent agreement with the observed values and the spatial and seasonal trends of tropospheric NO2 columns correspond well to observations from SCIAMACHY, capturing the highly polluted areas and the biomass burning cycle throughout the year. Over Asia, the model underestimates NOx from March to August, probably due to an underestimation of NOx emissions in the region. Overall, the comparison of the modeled CO and NO2 with MOPITT and SCIAMACHY observations emphasizes the need for more accurate emission rates from anthropogenic and biomass burning sources (i.e., specification of temporal variability).
The resulting ozone (O3) burden (348 Tg) lies within the range of other state-of-the-art global atmospheric chemistry models. The model generally captures the spatial and seasonal trends of background surface O3 and its vertical distribution. However, the model tends to overestimate O3 throughout the troposphere in several stations. This may be attributed to an overestimation of CO concentration over the Southern Hemisphere leading to an excessive production of O3 or to the lack of specific chemistry (e.g., halogen chemistry, aerosol chemistry). Overall, O3 correlations range between 0.6 and 0.8 for daily mean values. The overall performance of the NMMB-MONARCH is comparable to that of other state-of-the-art global chemistry models.
2017-02-14T14:06:57Z
2017-02-14T14:06:57Z
2017-02-10
Article
Badia, Alba [et al.]. Description and evaluation of the Multiscale Online Nonhydrostatic AtmospheRe CHemistry model (NMMB-MONARCH) version 1.0: gas-phase chemistry at global scale. "Geoscientific Model Development", 10 Febrer 2017, vol. 10, p. 609-638.
1991-959X
http://hdl.handle.net/2117/100992
10.5194/gmd-10-609-2017
eng
http://www.geosci-model-dev.net/10/609/2017/
info:eu-repo/grantAgreement/MINECO//CGL2013-46736-R/ES/PREDICCION DE AEROSOLES Y EVALUACION DEL FORZAMIENTO RADIATIVO PARA APLICACIONES METEOROLOGICAS Y CLIMATICAS CON EL MODELO ON-LINE NMMB%2FBSC-CTM/
http://creativecommons.org/licenses/by-nc-nd/3.0/es/
Open Access
Attribution-NonCommercial-NoDerivs 3.0 Spain
European Geosciences Union (EGU)
oai:upcommons.upc.edu:2117/3515722024-03-10T03:32:51Zcom_2117_79680com_2117_28579com_2117_28577com_2117_80518com_2117_23714com_2117_28578com_2117_15797col_2117_79868col_2117_80537col_2117_3055openAccess
EC-Earth3-AerChem: a global climate model with interactive aerosols and atmospheric chemistry participating in CMIP6
van Noije, Twan
Bergman, Tommi
Le Sager, Philippe
O'Donnell, Declan
Makkonen, Risto
Gonçalves Ageitos, María
Döscher, Ralf
Fladrich, Uwe
von Hardenberg, Jost
Keskinen, Jukka-Pekka
Korhonen, Hannele
Laakso, Anton
Myriokefalitakis, Stelios
Ollinaho, Pirkka
Pérez García-Pando, Carlos
Reerink, Thomas
Schrödner, Roland
Wyser, Klaus
Yang, Shuting
Universitat Politècnica de Catalunya. Departament d'Enginyeria de Projectes i de la Construcció
Barcelona Supercomputing Center
Àrees temàtiques de la UPC::Desenvolupament humà i sostenible::Degradació ambiental
Àrees temàtiques de la UPC::Enginyeria química::Química del medi ambient::Química atmosfèrica
This paper documents the global climate model EC-Earth3-AerChem, one of the members of the EC-Earth3 family of models participating in the Coupled Model Intercomparison Project Phase 6 (CMIP6). EC-Earth3-AerChem has interactive aerosols and atmospheric chemistry and contributes to the Aerosols and Chemistry Model Intercomparison Project (AerChemMIP). In this paper, we give an overview of the model, describe in detail how it differs from the other EC-Earth3 configurations, and outline the new features compared with the previously documented version of the model (EC-Earth 2.4). We explain how the model was tuned and spun up under preindustrial conditions and characterize the model's general performance on the basis of a selection of coupled simulations conducted for CMIP6. The net energy imbalance at the top of the atmosphere in the preindustrial control simulation is on average −0.09 W m−2 with a standard deviation due to interannual variability of 0.25 W m−2, showing no significant drift. The global surface air temperature in the simulation is on average 14.08 ∘C with an interannual standard deviation of 0.17 ∘C, exhibiting a small drift of 0.015 ± 0.005 ∘C per century. The model's effective equilibrium climate sensitivity is estimated at 3.9 ∘C, and its transient climate response is estimated at 2.1 ∘C. The CMIP6 historical simulation displays spurious interdecadal variability in Northern Hemisphere temperatures, resulting in a large spread across ensemble members and a tendency to underestimate observed annual surface temperature anomalies from the early 20th century onwards. The observed warming of the Southern Hemisphere is well reproduced by the model. Compared with the ECMWF (European Centre for Medium-Range Weather Forecasts) Reanalysis version 5 (ERA5), the surface air temperature climatology for 1995–2014 has an average bias of −0.86 ± 0.05 ∘C with a standard deviation across ensemble members of 0.35 ∘C in the Northern Hemisphere and 1.29 ± 0.02 ∘C with a corresponding standard deviation of 0.05 ∘C in the Southern Hemisphere. The Southern Hemisphere warm bias is largely caused by errors in shortwave cloud radiative effects over the Southern Ocean, a deficiency of many climate models. Changes in the emissions of near-term climate forcers (NTCFs) have significant effects on the global climate from the second half of the 20th century onwards. For the SSP3-7.0 Shared Socioeconomic Pathway, the model gives a global warming at the end of the 21st century (2091–2100) of 4.9 ∘C above the preindustrial mean. A 0.5 ∘C stronger warming is obtained for the AerChemMIP scenario with reduced emissions of NTCFs. With concurrent reductions of future methane concentrations, the warming is projected to be reduced by 0.5 ∘C.
2021-09-17T08:00:08Z
2021-09-17T08:00:08Z
2021-09-13
Article
Van Noije, T. [et al.]. EC-Earth3-AerChem: a global climate model with interactive aerosols and atmospheric chemistry participating in CMIP6. "Geoscientific model development", 13 Setembre 2021, vol. 14, núm. 9, p. 5637-5668.
1991-959X
http://hdl.handle.net/2117/351572
10.5194/gmd-14-5637-2021
eng
https://gmd.copernicus.org/articles/14/5637/2021/
info:eu-repo/grantAgreement/AEI/Plan Estatal de Investigación Científica y Técnica y de Innovación 2013-2016/CGL2017-88911-R/ES/CUANTIFICACION DE LA APORTACION PRESENTE Y FUTURA DE HIERRO BIODISPONIBLE DE LA ATMOSFERA AL OCEANO/
info:eu-repo/grantAgreement/EC/H2020/773051/EU/FRontiers in dust minerAloGical coMposition and its Effects upoN climaTe/FRAGMENT
https://creativecommons.org/licenses/by/4.0/
Open Access
Attribution 4.0
oai:upcommons.upc.edu:2117/876622020-07-23T20:12:40Zcom_2117_79680com_2117_28579com_2117_28577com_2117_164com_2117_3837com_2117_28581com_2117_15797col_2117_79868col_2117_1250col_2117_3838col_2117_3055openAccess
Classifying system for façades and anomalies
Gaspar Fàbregas, Kàtia
Casals Casanova, Miquel
Gangolells Solanellas, Marta
Universitat Politècnica de Catalunya. Departament de Construccions Arquitectòniques II
Universitat Politècnica de Catalunya. Departament d'Enginyeria de Projectes i de la Construcció
Universitat Politècnica de Catalunya. GRIC - Grup de Recerca i Innovació de la Construcció
Àrees temàtiques de la UPC::Edificació::Elements constructius d'edificis
Façades play an important role in buildings’ energy demand, and their state of conservation obviously influences thermal performance. The energy performance gap in existing residential buildings due to façade conservation status has not been analyzed in depth. In order to facilitate the systematic analysis of this influence, a system for classifying façades and their corresponding anomalies was developed for the first time. The classification system includes 23 types of façades and eight types of anomalies. It was verified by a panel of experts, and a case study was carried out with a sample of 154 buildings. An analysis of the results showed that the classification system is useful for a future analysis of the energy performance gap in existing residential buildings.
2016-06-02T15:05:54Z
2016-06-02T15:05:54Z
2016-02
Article
Gaspar, K., Casals, M., Gangolells, M. Classifying system for façades and anomalies. "Journal of performance of constructed facilities", Febrer 2016, vol. 30, núm. 1, 04014187.
0887-3828
http://hdl.handle.net/2117/87662
10.1061/(ASCE)CF.1943-5509.0000693
eng
http://ascelibrary.org/doi/abs/10.1061/%28ASCE%29CF.1943-5509.0000693
Open Access
oai:upcommons.upc.edu:2117/3677862023-03-16T18:13:01Zcom_2117_79680com_2117_28579com_2117_28577com_2117_3837com_2117_28581com_2117_15797col_2117_79868col_2117_3838col_2117_3055
Thermal comfort of older people during summer in the continental Mediterranean climate
Baquero Larriva, María Teresa
Forcada Matheu, Núria
Universitat Politècnica de Catalunya. Departament d'Enginyeria de Projectes i de la Construcció
Universitat Politècnica de Catalunya. GRIC - Grup de Recerca i Innovació de la Construcció
Àrees temàtiques de la UPC::Edificació
Globally, the population is ageing and extreme weather scenarios are expected, especially in southern European countries. In this context, the study assessed the thermal comfort of older people in five nursing homes in a continental Mediterranean climate in Spain during summer, through environmental measurements and surveys on site. A total of 1412 people were interviewed, including residents (older people) and non-residents (adults). The results showed that under the same environmental conditions, adults felt that the environment was warmer and they were less tolerant than older people. There was a 2.4¿°C difference between the neutral temperature of older people (25.6¿°C) and adults (23.2¿°C). Older people were less sensitive to thermal changes and their comfort zone was wider than that of adults. The comparison with similar studies from other climatic zones concluded that the neutral temperature for elderly in different climatic zones is similar but the thermal comfort zones are different. Older people were less sensitive to temperature changes than the predicted mean vote (PMV) model predicted. Therefore, this model would not be suitable for older people in cooling conditions in the Mediterranean continental climate. These results could be a starting point for the development of more accurate, healthy indoor spaces that meet the needs of older people as a vulnerable group, while improving energy efficiency and reducing emissions.
2022-05-27T10:46:53Z
2022-05-23
2024-06-01
Article
Baquero, M.; Forcada, N. Thermal comfort of older people during summer in the continental Mediterranean climate. "Journal of building engineering", 15 Agost 2022, vol. 54, núm. article 104680.
2352-7102
http://hdl.handle.net/2117/367786
10.1016/j.jobe.2022.104680
eng
https://www.sciencedirect.com/science/article/pii/S2352710222006933
info:eu-repo/grantAgreement/AEI/Plan Estatal de Investigación Científica y Técnica y de Innovación 2017-2020/PID2019-106777RB-C21/ES/IMPLICACIONES DEL CONFORT TERMICO DE LOS ANCIANOS EN EL INTERIOR AL CONSUMO ENERGETICO/
http://creativecommons.org/licenses/by-nc-nd/4.0/
Restricted access - publisher's policy
Attribution-NonCommercial-NoDerivatives 4.0 International
Elsevier
oai:upcommons.upc.edu:2117/3352192021-01-18T08:47:36Zcom_2117_79680com_2117_28579com_2117_28577com_2117_79679com_2117_79723com_2117_28581com_2117_15797col_2117_79868col_2117_79694col_2117_79768col_2117_3055openAccess
Characterization tests for predicting the mechanical performance of SFRC floors: design considerations
Martinelli, Paolo
Colombo, Matteo
Fuente Antequera, Albert de la
Pialarissi Cavalaro, Sergio Henrique
Pujadas Álvarez, Pablo
Di Prisco, Claudio
Universitat Politècnica de Catalunya. Departament d'Enginyeria Civil i Ambiental
Universitat Politècnica de Catalunya. Departament d'Enginyeria de Projectes i de la Construcció
Universitat Politècnica de Catalunya. EC - Enginyeria de la Construcció
Àrees temàtiques de la UPC::Enginyeria civil::Materials i estructures::Materials i estructures de formigó
The paper presents an experimental program carried out to check the load bearing capacity of a steel fibre reinforced concrete (SFRC) floor in northern Italy. The extensive mechanical characterization focused on the suitability of 3 non-standardized test methods for quality control and tensile constitutive curve assessment was performed, this consisting of: uniaxial tensile test (UTT), double edge wedge splitting test (DEWST) and double punching test (DPT) to characterize the post-cracking mechanical properties of the material. The joint experimental programme, carried out at the Politecnico di Milano and at the Universitat Politècnica de Catalunya, included the flexural characterization of four shallow beams (1.5 × 0.5 × 0.25 m3) and six standard notched beams (0.55 × 0.15 × 0.15 m3). All the samples were produced from the same batch and with the same SFRC mix which was applied for the floor. After that, 192 cores were drilled from the shallow beams and subjected to either UTTs, DEWSTs or DPTs. The stress level, the scatter and the constitutive curves derived from the non-standardized tests were identified and analysed. The calculated constitutive curves were used to predict the behaviour of the shallow beams.
2021-01-12T18:10:29Z
2021-01-12T18:10:29Z
2021-02
Article
Martinelli, P. [et al.]. Characterization tests for predicting the mechanical performance of SFRC floors: design considerations. "Materials and structures", Febrer 2021, vol. 54, núm. 1, p. 3:1-3:13.
1359-5997
http://hdl.handle.net/2117/335219
10.1617/s11527-020-01598-2
eng
https://link.springer.com/article/10.1617/s11527-020-01598-2
http://creativecommons.org/licenses/by/3.0/es/
Open Access
Attribution 3.0 Spain
oai:upcommons.upc.edu:2117/3509412023-06-14T14:36:05Zcom_2117_79680com_2117_28579com_2117_28577com_2117_79679com_2117_79723com_2117_28581com_2117_3837com_2117_15797col_2117_79868col_2117_79694col_2117_79768col_2117_3838col_2117_3055openAccess
Neural network-aided prediction of post-cracking tensile strength of fibre-reinforced concrete
Ikumi Montserrat, Tai
Galeote Moreno, Eduardo
Pujadas Álvarez, Pablo
Fuente Antequera, Albert de la
López Carreño, Ruben Daniel
Universitat Politècnica de Catalunya. Departament d'Enginyeria de Projectes i de la Construcció
Universitat Politècnica de Catalunya. Departament d'Enginyeria Civil i Ambiental
Universitat Politècnica de Catalunya. GRIC - Grup de Recerca i Innovació de la Construcció
Universitat Politècnica de Catalunya. EC - Enginyeria de la Construcció
Àrees temàtiques de la UPC::Enginyeria dels materials
Àrees temàtiques de la UPC::Informàtica
Structural fibres are an effective method to improve concrete post-cracking tensile strength (fctR). Currently, the characterization of this property is mainly performed experimentally. This is a source of uncertainties at design stages, which hinders the development of new fibre type and/or optimization of those currently existing. This paper presents a multilayer perceptron neural network to predict fctR of fibre-reinforced concrete (FRC) subjected to the Barcelona Test. The optimal architecture of the predictor is obtained by evaluating 9216 configurations of input dimension and number of hidden layers and neurons. The generalization performance is assessed using repeated random sub-sampling validation with 50 iterations. The final model can predict with high accuracy the fctR of FRC for different cracking stages. A parametric analysis is performed to prove coherence between the results predicted by the model and the established understanding of the FRC behaviour. Finally, numerical expressions are provided as an alternative tool to traditional testing to predict the residual strength of the Barcelona Test for pre-design and quality control purposes based on fibre dosage, concrete strength, specimen type and height and fibre geometric characteristics. These type of approaches are found to be necessary for boosting the development of the FRC technology.
2021-09-09T07:31:47Z
2021-09-09T07:31:47Z
2021-11
Article
Ikumi, T. [et al.]. Neural network-aided prediction of post-cracking tensile strength of fibre-reinforced concrete. "Computers & structures", Novembre 2021, vol. 256, article 106640
0045-7949
http://hdl.handle.net/2117/350941
10.1016/j.compstruc.2021.106640
eng
https://www.sciencedirect.com/science/article/pii/S0045794921001620
http://creativecommons.org/licenses/by-nc-nd/3.0/es/
Open Access
Attribution-NonCommercial-NoDerivs 3.0 Spain
oai:upcommons.upc.edu:2117/3978892023-12-21T07:47:03Zcom_2117_79680com_2117_28579com_2117_28577com_2117_3837com_2117_28581com_2117_15797col_2117_79868col_2117_3838col_2117_3055
Propelling negotiation skills modules in construction engineering programs: reflections and supporting tools for educators towards an enhanced effective training
Pujadas Álvarez, Pablo
Pardo Bosch, Francesc
Universitat Politècnica de Catalunya. Departament d'Enginyeria de Projectes i de la Construcció
Universitat Politècnica de Catalunya. GRIC - Grup de Recerca i Innovació de la Construcció
Àrees temàtiques de la UPC::Ensenyament i aprenentatge::Ensenyament universitari
This paper aims to provide a detailed account of our experience in implementing a negotiation module in an optional course of Management Skills in the Master's Degree in Structural & Construction Engineering program at the Universitat Politècnica de Catalunya and critically evaluate its effectiveness and impact on students' personal and professional development by triangulating experiences, surveys, and interviews. Based on an analysis of university curricula, the research explores effective teaching strategies, including Role-Play Simulation and Multi-Disciplinary Case Studies, which were highly valued by students. Video Recording and Playback, Peer Feedback, and Facilitator-led Discussions emerged as the most effective evaluation methods.
2023-12-13T09:49:09Z
2023-12-13T09:49:09Z
2024-02
Article
Pujadas, P.; Pardo-Bosch, F. Propelling negotiation skills modules in construction engineering programs: reflections and supporting tools for educators towards an enhanced effective training. "Teaching and teacher education", Febrer 2024, vol. 138, núm. article 104432.
0742-051X
http://hdl.handle.net/2117/397889
10.1016/j.tate.2023.104432
eng
https://www.sciencedirect.com/science/article/pii/S0742051X23004201
http://creativecommons.org/licenses/by-nc-nd/4.0/
Restricted access - publisher's policy
Attribution-NonCommercial-NoDerivatives 4.0 International
oai:upcommons.upc.edu:2117/3447192022-04-25T00:26:12Zcom_2117_79680com_2117_28579com_2117_28577com_2117_184550com_2117_184544com_2117_3837com_2117_28581com_2117_15797col_2117_79868col_2117_184598col_2117_3838col_2117_3055openAccess
Eco-efficiency evaluation in wastewater treatment plants considering greenhouse gas emissions through the data envelopment analysis-tolerance model
Ramírez Melgarejo, Monserrat Guadalupe
Güereca Hernández, Leonor Patricia
Gassó Domingo, Santiago
Salgado, C.D
Reyes Figueroa, A.D.
Universitat Politècnica de Catalunya. Doctorat en Enginyeria Ambiental
Universitat Politècnica de Catalunya. Departament d'Enginyeria de Projectes i de la Construcció
Universitat Politècnica de Catalunya. GRIC - Grup de Recerca i Innovació de la Construcció
Àrees temàtiques de la UPC::Desenvolupament humà i sostenible::Enginyeria ambiental::Tractament de l'aigua
The final publication is available at Springer via http://dx.doi.org/10.1007/s10661-021-09063-5
The eco-efficiency evaluation in wastewater treatment plants (WWTPs) is used to know and improve the environmental and economic efficiency of these processes, systems, products, and services. The eco-efficiency evaluations in WWTP contemplate the inputs to be minimized, the desirable results to be maximized, and the undesired results to be minimized. Data envelopment analysis (DEA) is a widely used method to evaluate the eco-efficiency of WWTPs; integrating several approaches in a single index, traditional DEA models do not take into account the uncertainty in the data. This study evaluates the eco-efficiency of a sample of Catalan WWTPs, considering the uncertainty of the data (DEA tolerance model), and it is for the first time that together with CO2, other greenhouse gas (GHG) such as CH4 and N2O are considered as part of the process outputs. GHG emissions were quantified using methods reported in the literature. Seven hundred twenty-nine eco-efficiency scores were estimated for each WWTP instead of a single score like conventional DEA models, analyzing optimistic and pessimistic scenarios. The WWTPs were classified according to the estimated eco-efficiency scores, accounting for the uncertainty in each of the scenarios, and demonstrating the changes in the performance of the WWTPs in the different scenarios. Only two WWTPs were eco-efficient in all the scenarios evaluated. This approach provides essential information to improve efficiency and innovation in the wastewater sector.
2021-04-28T13:10:16Z
2022-04-25T00:26:12Z
2021-05
Article
Ramírez, M. [et al.]. Eco-efficiency evaluation in wastewater treatment plants considering greenhouse gas emissions through the data envelopment analysis-tolerance model. "Environmental monitoring and assessment", Maig 2021, vol. 193, núm. 5, p. 301:1-301:15.
0167-6369
https://rdcu.be/cjooc
http://hdl.handle.net/2117/344719
10.1007/s10661-021-09063-5
eng
https://link.springer.com/article/10.1007/s10661-021-09063-5
Open Access
oai:upcommons.upc.edu:2117/3420332021-06-20T01:11:20Zcom_2117_79680com_2117_28579com_2117_28577com_2117_184554com_2117_184544com_2117_3837com_2117_28581com_2117_15797col_2117_79868col_2117_184712col_2117_3838col_2117_3055openAccess
Association between building characteristics and indoor environmental quality through post-occupancy evaluation
Bortolini, Rafaela
Forcada Matheu, Núria
Universitat Politècnica de Catalunya. Doctorat en Enginyeria de la Construcció
Universitat Politècnica de Catalunya. Departament d'Enginyeria de Projectes i de la Construcció
Universitat Politècnica de Catalunya. GRIC - Grup de Recerca i Innovació de la Construcció
Àrees temàtiques de la UPC::Edificació
Post-occupancy evaluations are common tools used to periodically assess Indoor Environmental Quality (IEQ) in tertiary buildings. Although the large amount of data collected from surveys contain valuable information, the influence of building characteristics on IEQ considering the different uses of the rooms and different types of occupants is rarely considered in the evaluation. This study presents an analysis of the association between building characteristics and IEQ in different building rooms (classrooms and offices) and different occupants (students and lecturers) using a post occupancy evaluation survey to 1013 occupants in 26 higher educational buildings in Spain under a Mediterranean climate. This research demonstrated that building characteristics influence IEQ perceptions of the different rooms in tertiary education buildings. The possibility of controlling the lighting, shadows or heating, ventilation air or conditioning (HVAC) systems are the most influential factors when analyzing IEQ. The findings of this research are of interest to facility managers aiming at implementing energy efficiency measures based on user-centric satisfaction or developing maintenance plans focused on IEQ enhancement.
2021-03-18T18:42:55Z
2021-03-18T18:42:55Z
2021-03-17
Article
Bortolini, R.; Forcada, N. Association between building characteristics and indoor environmental quality through post-occupancy evaluation. "Energies", 17 Març 2021, vol. 14, núm. 6, p. 1659/1-1659/15.
1996-1073
http://hdl.handle.net/2117/342033
10.3390/en14061659
eng
https://www.mdpi.com/1996-1073/14/6/1659
http://creativecommons.org/licenses/by/4.0/
Open Access
Attribution 4.0
oai:upcommons.upc.edu:2117/3350132022-09-30T08:52:42Zcom_2117_79680com_2117_28579com_2117_28577com_2117_3923com_2117_657com_2117_28581com_2117_79679com_2117_79723com_2117_184549com_2117_184544com_2117_15797col_2117_79868col_2117_3924col_2117_658col_2117_79694col_2117_79768col_2117_184698col_2117_3055openAccess
Wireless sensing of concrete setting process
González López, Giselle
Romeu Robert, Jordi
Cairó, Ignasi
Segura Pérez, Ignacio
Ikumi Montserrat, Tai
Jofre Roca, Lluís
Universitat Politècnica de Catalunya. Doctorat en Teoria del Senyal i Comunicacions
Universitat Politècnica de Catalunya. Departament de Teoria del Senyal i Comunicacions
Universitat Politècnica de Catalunya. Departament d'Enginyeria Civil i Ambiental
Universitat Politècnica de Catalunya. Departament d'Enginyeria de Projectes i de la Construcció
Universitat Politècnica de Catalunya. ANTENNALAB - Grup d'Antenes i Sistemes Radio
Universitat Politècnica de Catalunya. EC - Enginyeria de la Construcció
Àrees temàtiques de la UPC::Enginyeria de la telecomunicació
An RFID-based wireless system to measure the evolution of the setting process of cement-based materials is presented in this paper. The system consists of a wireless RFID temperature sensor that works embedded in concrete, and an external RFID reader that communicates with the embedded sensor to extract the temperature measurement conducted by the embedded sensor. Temperature time evolution is a well known proxy to monitor the setting process of concrete. The RFID sensor consisting of an UWB Bow Tie antenna with central frequency 868 MHz, matched to the EM4325 temperature chip through a T-match structure for embedded operation inside concrete is fully characterized. Results for measurements of the full set up conducted in a real-scenario are provided
2021-01-08T09:11:28Z
2021-01-08T09:11:28Z
2020-10-21
Article
Gonzalez, G. [et al.]. Wireless sensing of concrete setting process. "Sensors", 21 Octubre 2020,
1424-8220
http://hdl.handle.net/2117/335013
10.3390/s20205965
eng
https://www.mdpi.com/1424-8220/20/20/5965
info:eu-repo/grantAgreement/FEDER/MDM-2016-0600
info:eu-repo/grantAgreement/AEI/Plan Estatal de Investigación Científica y Técnica y de Innovación 2017-2020/PID2019-107885GB-C31/ES/SISTEMAS RADIANTES X-WAVE INTEGRADAS DE COMUNICACIONES Y SENSORIZACION/
http://creativecommons.org/licenses/by-nc/3.0/es/
Open Access
Attribution-NonCommercial 3.0 Spain
Multidisciplinary Digital Publishing Institute (MDPI)
oai:upcommons.upc.edu:2117/1658922021-03-11T05:06:41Zcom_2117_79680com_2117_28579com_2117_28577com_2117_3307com_2117_28581com_2117_15797col_2117_79868col_2117_3308col_2117_3055openAccess
Impacto en la salud, socieconómico y ambiental de las medidas para incentivar la reducción del uso del vehiculo privado por los trabajadores
Cremades Oliver, Lázaro Vicente
Gómez Yepes, Milena Elizabeth
Universitat Politècnica de Catalunya. Departament d'Enginyeria de Projectes i de la Construcció
Universitat Politècnica de Catalunya. GIIP - Grup de Recerca en Enginyeria de Projectes: Disseny i Sostenibilitat
Àrees temàtiques de la UPC::Desenvolupament humà i sostenible
Es cada vez más evidente que el creciente consumo de combustibles fósiles a nivel mundial es actualmente el mayor responsable de la contaminación atmosférica en todo el planeta y, como consecuencia, de la alteración del clima por las emisiones de gases de efecto invernadero y del aumento de problemas respiratorios en la población. Uno de los sectores en los que ese consumo es importante y, además, tiene mayores tasas de crecimiento en los próximos años es el transporte, y en particular, el uso del vehículo con motor de combustión interna (VCI). Es por dicho motivo que recientemente varios países, entre ellos España, se están planteando prohibir la circulación de VCI en un futuro cercano (año 2040) y sustituirlos paulatinamente por vehículos de emisión cero, especialmente vehículos eléctricos (VE).
Para colaborar en reducir las emisiones contaminantes de VCI, algunas empresas están incentivando económicamente la reducción del uso de VCI de los trabajadores para desplazarse hacia/desde sus lugares de trabajo. Estas medidas tienen sin duda un triple impacto a nivel ambiental, socioeconómico, y también en la salud.
Este trabajo pretende analizar esas medidas y evaluar su impacto, estudiando los casos de tres tamaños de empresa: pequeña (<50 trabajadores), mediana (<250 trabajadores) y grande (>250 trabajadores).
2019-07-10T07:54:55Z
2019-07-10T07:54:55Z
2019
Article
Cremades, L.V.; Gómez Yepes, M. Impacto en la salud, socieconómico y ambiental de las medidas para incentivar la reducción del uso del vehiculo privado por los trabajadores. "ORP Journal", 2019, vol. 2019, núm. 1, p. 103-111.
2385-3832
http://hdl.handle.net/2117/165892
spa
http://www.orpjournal.com/index.php/ORPjournal/issue/download/13/45
http://creativecommons.org/licenses/by-nc-nd/3.0/es/
Open Access
Attribution-NonCommercial-NoDerivs 3.0 Spain
oai:upcommons.upc.edu:2117/3830172023-02-19T19:55:14Zcom_2117_79680com_2117_28579com_2117_28577com_2117_79679com_2117_79723com_2117_28581com_2117_15797col_2117_79868col_2117_79694col_2117_79768col_2117_3055openAccess
Data-driven optimization tool for the functional, economic, and environmental properties of blended cement concrete using supplementary cementitious materials
Hafez, Hisham
Teirelbar, Ahmed
Tošić, Nikola
Ikumi Montserrat, Tai
Fuente Antequera, Albert de la
Universitat Politècnica de Catalunya. Departament d'Enginyeria Civil i Ambiental
Universitat Politècnica de Catalunya. Departament d'Enginyeria de Projectes i de la Construcció
Universitat Politècnica de Catalunya. EC - Enginyeria de la Construcció
Àrees temàtiques de la UPC::Enginyeria civil::Materials i estructures::Materials i estructures de formigó
The need to produce more sustainable concrete is proving imminent given the rising environmental concerns facing the industry. Blended cement concrete, based on any of the prominent supplementary cementitious materials (SCMs) such as fly ash, ground granulated blast-furnace slag, silica fume, calcined clay and limestone powder, have proven to be the best candidates for sustainable concrete mixes. However, a reliable sustainability measure includes not only the environmental impact, but also the economic and functional ones. Within these five SCMs, their environmental, economic and functional properties are found to be conflicting at times, making a clear judgement on what would be the optimum mix not a straightforward path. A recent framework and tool for concrete sustainability assessment ECO2, sets a reliable methodology for including the functional performance of a concrete mix depending on project-based specifications. Therefore, in this study, a recently published regression model, Pre-bcc was used to predict the functional properties of a wide grid search of potentially suitable blended cement concrete mixes. Hence, an open access novel genetic algorithm tool “Opt-bcc” was developed and used to optimize the sustainability score of these mixes based on a set selection of user-defined project-specific functional criteria. The optimized mixes using the Opt-bcc model for each strength class were compared against the mix design proposed by other optimization models from the literature and were found to be at least 70% cheaper and of 30% less environmental impact.
2023-02-14T15:49:16Z
2023-02-14T15:49:16Z
2023-05
Article
Hafez, H. [et al.]. Data-driven optimization tool for the functional, economic, and environmental properties of blended cement concrete using supplementary cementitious materials. "Journal of building engineering", Maig 2023, vol. 67, núm. article 106022.
2352-7102
http://hdl.handle.net/2117/383017
10.1016/j.jobe.2023.106022
eng
https://www.sciencedirect.com/science/article/pii/S2352710223002012
http://creativecommons.org/licenses/by-nc-nd/4.0/
Open Access
Attribution-NonCommercial-NoDerivatives 4.0 International
Elsevier
oai:upcommons.upc.edu:2117/1677422022-05-17T10:22:10Zcom_2117_79680com_2117_28579com_2117_28577com_2117_184550com_2117_184544com_2117_3233com_2117_28581com_2117_3837com_2117_15797col_2117_79868col_2117_184598col_2117_3234col_2117_3838col_2117_3055openAccess
Towards sustainable business models for electric vehicle battery second use: a critical review
Reinhardt, Robert
Christodoulou, Ioannis
Gassó Domingo, Santiago
Amante García, Beatriz
Universitat Politècnica de Catalunya. Doctorat en Enginyeria Ambiental
Universitat Politècnica de Catalunya. Departament d'Enginyeria de Projectes i de la Construcció
Universitat Politècnica de Catalunya. GRIC - Grup de Recerca i Innovació de la Construcció
Universitat Politècnica de Catalunya. ENMA - Enginyeria del Medi Ambient
Àrees temàtiques de la UPC::Desenvolupament humà i sostenible::Enginyeria ambiental::Tractament dels residus
Àrees temàtiques de la UPC::Energies::Energia elèctrica
A global mass market adoption of electric vehicles (EVs) is still hindered by the high costs of lithium-ion batteries (LIBs). Repurposing degraded EV batteries in second use applications holds the potential to reduce first-cost impediments of EVs. New business models are emerging rapidly within the EV and battery second use (B2U) industries but they focus on economic aspects without integrating social and environmental dimensions. Simultaneously, the emerging research topic around sustainable business models (SBMs) seem to be able to bridge the environmental management concerns in conjunction with economic and social changes. This paper addresses this paucity in the literature by offering an interdisciplinary approach by drawing upon key perspectives from the emerging sustainable technology of EVs and its underlying B2U market in relation to SBMs. Findings reveal major contributions to theorists and practitioners. B2U holds the potential to facilitate current unsustainable practices in the EV industry. This in turn, will lead towards a faster EV market uptake and improvements of overall sustainability performance through SBM perspectives. Accordingly, a B2U business model framework is conceptualised that embodies the cross-sector multi-stakeholder impact and the shared value creation mechanism for the EV industry and emerging B2U market. We finally conclude that as such B2U holds the potential to prove itself to be a viable and efficient case for sustainability. This can be implemented by taking a multi-stakeholder network centric business model design compared to traditionally firm-centric models, which ultimately refreshes the traditional business models on sustainability.
2019-08-27T14:10:42Z
2021-06-04T00:26:08Z
2019-09
Article
Reinhardt, R. [et al.]. Towards sustainable business models for electric vehicle battery second use: a critical review. "Journal of environmental management", Setembre 2019, vol. 245, p. 432-446.
0301-4797
http://hdl.handle.net/2117/167742
10.1016/j.jenvman.2019.05.095
eng
https://www.sciencedirect.com/science/article/pii/S0301479719307236
info:eu-repo/grantAgreement/MINECO//TEC2015-63899-C3-1-R/ES/ANALISIS DEL CICLO DE VIDA, DE NEGOCIOS Y DE LA ENTROPIA EN BATERIAS - SUBPROYECTO 1/
http://creativecommons.org/licenses/by-nc-nd/3.0/es/
Open Access
Attribution-NonCommercial-NoDerivs 3.0 Spain
oai:upcommons.upc.edu:2117/3607342024-03-03T20:32:52Zcom_2117_79680com_2117_28579com_2117_28577com_2117_79681com_2117_3837com_2117_28581com_2117_15797col_2117_79868col_2117_79693col_2117_3838col_2117_3055openAccess
Assessing the impact of the COVID-19 lockdown on the energy consumption of university buildings
Gaspar Fàbregas, Kàtia
Gangolells Solanellas, Marta
Casals Casanova, Miquel
Pujadas Álvarez, Pablo
Forcada Matheu, Núria
Macarulla Martí, Marcel
Tejedor Herrán, Blanca
Universitat Politècnica de Catalunya. Departament de Tecnologia de l'Arquitectura
Universitat Politècnica de Catalunya. Departament d'Enginyeria de Projectes i de la Construcció
Universitat Politècnica de Catalunya. GRIC - Grup de Recerca i Innovació de la Construcció
Àrees temàtiques de la UPC::Energies::Gestió de l'energia::Estalvi energètic
Exceptional pandemic lockdown measures enabled singular experiments such as analysing the energy consumption of vacant buildings. This paper assesses the impact of the COVID-19 lockdown on the energy use of academic buildings. For this purpose, weather-adjusted energy use was compared before and during the lockdown, including different levels of lockdown restrictions. Results obtained for the 83 academic buildings of Universitat Politècnica de Catalunya - Barcelona Tech (UPC) reveal that the avoided energy consumption amounted to over 4.3 GWh during the post-pandemic year. However, the results indicate that academic buildings were still using approximately 46.9% of their typical energy consumption during strict lockdown. This revelation emphasizes the high environmental burden of buildings, regardless of whether they are occupied.
2022-01-26T10:30:59Z
2022-01-26T10:30:59Z
2022-02-15
Article
Gaspar, K. [et al.]. Assessing the impact of the COVID-19 lockdown on the energy consumption of university buildings. "Energy and buildings", 15 Febrer 2022, vol. 257, article 111783
0378-7788
http://hdl.handle.net/2117/360734
10.1016/j.enbuild.2021.111783
eng
https://www.sciencedirect.com/science/article/pii/S0378778821010677
info:eu-repo/grantAgreement/AEI/Plan Estatal de Investigación Científica y Técnica y de Innovación 2017-2020/PID2020-117366RB-I00/ES/ESTRATEGIAS DE VENTILACION OPTIMIZADAS CONSIDERANDO LA CALIDAD DEL AIRE INTERIOR, EL CONFORT TERMICO Y EL CONSUMO DE ENERGIA EN EDIFICIOS EDUCATIVOS /
http://creativecommons.org/licenses/by-nc-nd/3.0/es/
Open Access
Attribution-NonCommercial-NoDerivs 3.0 Spain
oai:upcommons.upc.edu:2117/3738042023-09-10T00:53:55Zcom_2117_79680com_2117_28579com_2117_28577com_2117_3233com_2117_28581com_2117_15797col_2117_79868col_2117_3234col_2117_3055openAccess
Polygeneration system optimization for building energy system retrofit: A case of study for TR5 building of UPC-Terrassa
Pinto Maquillon, Edwin Samir
Amante García, Beatriz
Universitat Politècnica de Catalunya. Departament d'Enginyeria de Projectes i de la Construcció
Universitat Politècnica de Catalunya. ENMA - Enginyeria del Medi Ambient
Àrees temàtiques de la UPC::Edificació::Instal·lacions i acondicionament d'edificis
Àrees temàtiques de la UPC::Energies::Eficiència energètica
The building sector represents around one-third of the energy related to the EU CO2eq emissions, which makes it a crucial sector for achieving the EU’s energy and environmental goals. Thus, the EU has established a legislative framework to foster, among others, the modernisation of the existing building stock through a better energy system integration. In this sense, bearing in mind the needs of energy system retrofit of the public buildings in Spain, this paper carried out a thorough analysis of different trade-off solutions obtained from the multiobjective optimization of a polygeneration system for the TR5 building of the Polytechnic University of Catalunya. The results highlight the selection of PV panels, cogeneration modules and 2nd life Li-Ion batteries, among others, to achieve cost-effective and sustainable energy systems. By covering the available area, 2000 m2, the PV panels attend about 23% of the electricity required for the building. On the other hand, considering the current geopolitical tensions, it presents a potential configuration that allows to cut off the natural gas consumption reducing about 6% the current cost. The study was carried out by using a Mixed Integer Linear Programming model maximizing the Net Present Value of the project considering the environmental impact.
2022-09-30T13:00:46Z
2022-09-30T13:00:46Z
2022-10-15
Article
Pinto, E.; Amante, B. Polygeneration system optimization for building energy system retrofit: A case of study for TR5 building of UPC-Terrassa. "Energy and buildings", 15 Octubre 2022, vol. 273, núm. article 112375.
0378-7788
http://hdl.handle.net/2117/373804
10.1016/j.enbuild.2022.112375
eng
https://www.sciencedirect.com/science/article/pii/S0378778822005461
http://creativecommons.org/licenses/by-nc-nd/4.0/
Open Access
Attribution-NonCommercial-NoDerivatives 4.0 International
east=2.023099; north=41.562935; name=Carrer de Colom, 9, 08222 Terrassa, Barcelona, Espanya
oai:upcommons.upc.edu:2117/3354052021-11-14T01:39:54Zcom_2117_79680com_2117_28579com_2117_28577com_2117_15797col_2117_79868col_2117_3055openAccess
Creating business models for smart cities: a practical framework
Timeus, Krista
Vinaixa, Jordi
Pardo Bosch, Francesc
Universitat Politècnica de Catalunya. Departament d'Enginyeria de Projectes i de la Construcció
Àrees temàtiques de la UPC::Economia i organització d'empreses::Gestió i direcció
Smart cities can use business models to evaluate what value they offer citizens byintegrating ICT into their infrastructure and services. The article introduces the concept of the ‘city business model’ and proposes a practical framework for analysing it.The City Model Canvas (CMC)—based on the Business Model Canvas for firms—shows the elements that city councils should consider during the design, delivery and assessment of smart services, including the smart service’s expected economic, envir-onmental and social impacts. An example of how the CMC was used to design an ICTplatform in Bristol shows its utility as a planning too.
2021-01-15T13:57:56Z
2021-01-15T13:57:56Z
2020-05-03
Article
Timeus, K.; Vinaixa, J.; Pardo, F. Creating business models for smart cities: a practical framework. "Public management review", 3 Maig 2020, vol. 22, núm. 5, p. 726-745.
1471-9037
http://hdl.handle.net/2117/335405
10.1080/14719037.2020.1718187
eng
https://www.tandfonline.com/doi/full/10.1080/14719037.2020.1718187
http://creativecommons.org/licenses/by-nc-nd/4.0/
Open Access
Attribution-NonCommercial-NoDerivs 4.0
oai:upcommons.upc.edu:2117/1666522021-10-17T00:49:34Zcom_2117_79680com_2117_28579com_2117_28577com_2117_3837com_2117_28581com_2117_15797col_2117_79868col_2117_3838col_2117_3055openAccess
2005-2017 Ozone trends and potential benefits of local measures as deduced from air quality measurements in the north of the Barcelona metropolitan area
Massagué Obradors, Jordi
Carnerero Quintero, Cristina
Escudero, M.
Baldasano Recio, José María
Alastuey, Andres
Querol, Xavier
Universitat Politècnica de Catalunya. Departament d'Enginyeria de Projectes i de la Construcció
Universitat Politècnica de Catalunya. GRIC - Grup de Recerca i Innovació de la Construcció
Àrees temàtiques de la UPC::Desenvolupament humà i sostenible
We analyzed 2005–2017 data sets on ozone (O3) concentrations in an area (the Vic Plain) frequently affected by the atmospheric plume northward transport of the Barcelona metropolitan area (BMA), the atmospheric basin of Spain recording the highest number of exceedances of the hourly O3 information threshold (180¿µg¿m-3). We aimed at evaluating the potential benefits of implementing local-BMA short-term measures to abate emissions of precursors. To this end, we analyzed in detail spatial and time variations of concentration of O3 and nitrogen oxides (NO and NO2, including OMI remote sensing data for the latter). Subsequently, a sensitivity analysis is done with the air quality (AQ) data to evaluate potential O3 reductions in the north of the BMA on Sundays compared with weekdays as a consequence of the reduction in regional emissions of precursors. The results showed a generalized decreasing trend for regional background O3 as well as the well-known increase in urban O3 and higher urban NO decreasing slopes compared with those of NO2. The most intensive O3 episodes in the Vic Plain are caused by (i) a relatively high regional background O3 (due to a mix of continental, hemispheric–tropospheric and stratospheric contributions); by (ii) intensive surface fumigation from mid-troposphere high O3 upper layers arising from the concatenation of the vertical recirculation of air masses; but also by (iii) an important O3 contribution from the northward transport/channeling of the pollution plume from the BMA. The high relevance of the local-daily O3 contribution during the most intense pollution episodes is clearly supported by the O3 (surface concentration) and NO2 (OMI data) data analysis. A maximum decrease potential (by applying short-term measures to abate emissions of O3 precursors) of 49¿µg¿O3¿m-3 (32¿%) of the average diurnal concentrations was determined. Structurally implemented measures, instead of episodically, could result in important additional O3 decreases because not only the local O3 coming from the BMA plume would be reduced, but also the recirculated O3 and thus the intensity of O3 fumigation in the plain. Therefore, it is highly probable that both structural and episodic measures to abate NOx and volatile organic compound (VOC) emissions in the BMA would result in evident reductions of O3 in the Vic Plain
2019-07-24T07:14:20Z
2019-07-24T07:14:20Z
2019-06-05
Article
Massague, J. [et al.]. 2005-2017 Ozone trends and potential benefits of local measures as deduced from air quality measurements in the north of the Barcelona metropolitan area. "Atmospheric chemistry and physics", 5 Juny 2019, vol. 19, p. 7445-7465.
1680-7324
http://hdl.handle.net/2117/166652
10.5194/acp-19-7445-2019
eng
https://www.atmos-chem-phys.net/19/7445/2019/
http://creativecommons.org/licenses/by-nc-nd/3.0/es/
Open Access
Attribution-NonCommercial-NoDerivs 3.0 Spain
east=2.1734035; north=41.38506389999999; name=Barcelona, Espanya
European Geosciences Union (EGU)
oai:upcommons.upc.edu:2117/1723312022-05-17T10:23:48Zcom_2117_79680com_2117_28579com_2117_28577com_2117_79681com_2117_184550com_2117_184544com_2117_3837com_2117_28581com_2117_15797col_2117_79868col_2117_79693col_2117_184598col_2117_3838col_2117_3055openAccess
Office representatives for cost-optimal energy retrofitting analysis: a novel approach using cluster analysis of energy performance certificate databases
Gangolells Solanellas, Marta
Casals Casanova, Miquel
Ferré Bigorra, Jaume
Forcada Matheu, Núria
Macarulla Martí, Marcel
Gaspar Fàbregas, Kàtia
Tejedor Herrán, Blanca
Universitat Politècnica de Catalunya. Departament d'Enginyeria de Projectes i de la Construcció
Universitat Politècnica de Catalunya. Departament de Tecnologia de l'Arquitectura
Universitat Politècnica de Catalunya. Doctorat en Enginyeria Ambiental
Universitat Politècnica de Catalunya. GRIC - Grup de Recerca i Innovació de la Construcció
Àrees temàtiques de la UPC::Edificació
A large number of buildings must be evaluated to formulate energy retrofitting policies for existing building stock. In this context, it is crucial to identify reference buildings that can effectively represent the entire stock, since such buildings can then be used to assess the individualized cost-effectiveness of retrofitting measures. This paper presents a novel approach for identifying and defining a set of reference buildings by applying the k-means clustering method to energy performance certificate databases. To this end, a four-step methodology has been envisaged. First, an energy performance certificate database is prepared and variables that have an impact on energy consumption are pre-selected. Selected data are then pre-processed. Next, the k-means clustering method is applied. Finally, the resulting cluster centroids are used to identify the closest energy performance certificates in the database, in other words, the representative buildings that will then be used for cost-optimal retrofitting analysis. The methodology is illustrated using the energy performance certificate database managed by the Catalan Institute of Energy (ICAEN), which includes a sample of 13,701 offices. Seven representative office blocks and offices in industrial buildings and nine representative offices in residential buildings were identified. The results establish the basis for supporting strategic decision-making for energy saving retrofit interventions in existing Spanish offices.
2019-11-13T13:53:56Z
2019-11-13T13:53:56Z
2020-01-01
Article
Gangolells, M. [et al.]. Office representatives for cost-optimal energy retrofitting analysis: a novel approach using cluster analysis of energy performance certificate databases. "Energy and buildings", 1 Gener 2020, vol. 206, p. 109557:1-109557:9.
0378-7788
http://hdl.handle.net/2117/172331
10.1016/j.enbuild.2019.109557
eng
https://www.sciencedirect.com/science/article/pii/S0378778819316810
info:eu-repo/grantAgreement/MINECO/1PE/BIA2016-75382-R
http://creativecommons.org/licenses/by/3.0/es/
Open Access
Attribution 3.0 Spain
oai:upcommons.upc.edu:2117/3677192024-03-10T04:00:22Zcom_2117_79680com_2117_28579com_2117_28577com_2117_80518com_2117_23714com_2117_28578com_2117_184550com_2117_184544com_2117_15797col_2117_79868col_2117_80537col_2117_184598col_2117_3055openAccess
Multiphase processes in the EC-Earth model and their relevance to the atmospheric oxalate, sulfate, and iron cycles
Myriokefalitakis, Stelios
Bergas Massó, Elisa
Gonçalves Ageitos, María
Pérez García-Pando, Carlos
van Noije, Twan
Le Sager, Philippe
Ito, Akinori
Athanasopoulou, Eleni
Nenes, Athanasios
Kanakidou, Maria
Krol, Maarten
Gerasopoulos, Evangelos
Universitat Politècnica de Catalunya. Doctorat en Enginyeria Ambiental
Universitat Politècnica de Catalunya. Departament d'Enginyeria de Projectes i de la Construcció
Barcelona Supercomputing Center
Àrees temàtiques de la UPC::Desenvolupament humà i sostenible::Enginyeria ambiental
Understanding how multiphase processes affect the iron-containing aerosol cycle is key to predicting ocean biogeochemistry changes and hence the feedback effects on climate. For this work, the EC-Earth Earth system model in its climate–chemistry configuration is used to simulate the global atmospheric oxalate (OXL), sulfate (SO), and iron (Fe) cycles after incorporating a comprehensive representation of the multiphase chemistry in cloud droplets and aerosol water. The model considers a detailed gas-phase chemistry scheme, all major aerosol components, and the partitioning of gases in aerosol and atmospheric water phases. The dissolution of Fe-containing aerosols accounts kinetically for the solution's acidity, oxalic acid, and irradiation. Aerosol acidity is explicitly calculated in the model, both for accumulation and coarse modes, accounting for thermodynamic processes involving inorganic and crustal species from sea salt and dust.
Simulations for present-day conditions (2000–2014) have been carried out with both EC-Earth and the atmospheric composition component of the model in standalone mode driven by meteorological fields from ECMWF's ERA-Interim reanalysis. The calculated global budgets are presented and the links between the (1) aqueous-phase processes, (2) aerosol dissolution, and (3) atmospheric composition are demonstrated and quantified. The model results are supported by comparison to available observations. We obtain an average global OXL net chemical production of 12.615 ± 0.064 Tg yr−1 in EC-Earth, with glyoxal being by far the most important precursor of oxalic acid. In comparison to the ERA-Interim simulation, differences in atmospheric dynamics and the simulated weaker oxidizing capacity in EC-Earth overall result in a ∼ 30 % lower OXL source. On the other hand, the more explicit representation of the aqueous-phase chemistry in EC-Earth compared to the previous versions of the model leads to an overall ∼ 20 % higher sulfate production, but this is still well correlated with atmospheric observations.
The total Fe dissolution rate in EC-Earth is calculated at 0.806 ± 0.014 Tg yr−1 and is added to the primary dissolved Fe (DFe) sources from dust and combustion aerosols in the model (0.072 ± 0.001 Tg yr−1). The simulated DFe concentrations show a satisfactory comparison with available observations, indicating an atmospheric burden of ∼0.007 Tg, resulting in an overall atmospheric deposition flux into the global ocean of 0.376 ± 0.005 Tg yr−1, which is well within the range reported in the literature. All in all, this work is a first step towards the development of EC-Earth into an Earth system model with fully interactive bioavailable atmospheric Fe inputs to the marine biogeochemistry component of the model.
2022-05-26T10:37:17Z
2022-05-26T10:37:17Z
2022-04-08
Article
Myriokefalitakis, S. [et al.]. Multiphase processes in the EC-Earth model and their relevance to the atmospheric oxalate, sulfate, and iron cycles. "Geoscientific model development", 8 Abril 2022, vol. 15, núm. 7, p. 3079-3120.
1991-9603
http://hdl.handle.net/2117/367719
10.5194/gmd-15-3079-2022
eng
https://gmd.copernicus.org/articles/15/3079/2022/
info:eu-repo/grantAgreement/AEI/Plan Estatal de Investigación Científica y Técnica y de Innovación 2013-2016/CGL2017-88911-R/ES/CUANTIFICACION DE LA APORTACION PRESENTE Y FUTURA DE HIERRO BIODISPONIBLE DE LA ATMOSFERA AL OCEANO/
info:eu-repo/grantAgreement/EC/H2020/821205/EU/Constrained aerosol forcing for improved climate projections/FORCeS
info:eu-repo/grantAgreement/EC/H2020/773051/EU/FRontiers in dust minerAloGical coMposition and its Effects upoN climaTe/FRAGMENT
info:eu-repo/grantAgreement/MINECO//RYC-2015-18690/ES/RYC-2015-18690/
http://creativecommons.org/licenses/by/4.0/
Open Access
Attribution 4.0 International
European Geosciences Union (EGU)
oai:upcommons.upc.edu:2117/4003372024-03-20T11:40:33Zcom_2117_79680com_2117_28579com_2117_28577com_2117_80518com_2117_23714com_2117_28578com_2117_15797col_2117_79868col_2117_80537col_2117_3055openAccess
On-orbit calibration and performance of the EMIT imaging spectrometer
Thompson, David R.
Green, Robert
Bradley, Christine
Brodrick, Philip G
Mahowald, Natalie
Dor, Eyal Ben
Bennett, Matthew
Bernas, Michael
Carmon, Nimrod
Chadwick, Dana
Nelson Clark, Roger
Coleman, Red Willow
Cox, Evan
Diaz, Ernesto
Gonçalves Ageitos, María
Klose, Martina
Obiso, Vincenzo
García Pando, Carlos Pérez
Universitat Politècnica de Catalunya. Departament d'Enginyeria de Projectes i de la Construcció
Barcelona Supercomputing Center
Àrees temàtiques de la UPC::Enginyeria de la telecomunicació::Radiocomunicació i exploració electromagnètica::Teledetecció
Àrees temàtiques de la UPC::Física::Astronomia i astrofísica
The Earth surface Mineral dust source InvesTigation (EMIT) is a remote visible to shortwave infrared (VSWIR) imaging spectrometer that has been operating onboard the International Space Station since July 2022. This article describes EMIT's on-orbit spectroradiometric calibration and validation. Accurate spectroscopy is vital to achieve consistent mapping results with orbital imaging spectrometers. EMIT takes a unique approach to this challenge, with just six optical elements, no shutter, and no onboard calibration systems. Its simple design focuses on uniformity and stability to enable vicarious spectroradiometric calibration. Our experiments demonstrate that this approach is successful, approaching the fidelity of manual field spectroscopy in some cases, and enabling new and more accurate products across diverse Earth science disciplines. EMIT achieves several notable firsts for an instrument of its class. It demonstrates successful on-orbit adjustments of Focal Plane Array (FPA) alignment with sub-micron precision. It offers spectral uniformity better than 98%. Optical artifacts in the measurement channels are at least three orders of magnitude below the primary solar-reflected surface signals. Its noise performance enables percent-level discrimination in the depths of mineral absorption features. In these aspects, EMIT satisfies the stringent performance needs for the next generation of VSWIR imaging spectrometers to observe the Earth's ecosystems, geology, and water resources.
2024-01-26T11:26:14Z
2024-01-26T11:26:14Z
2024-03-15
Article
Thompson, D.R. [et al.]. On-orbit calibration and performance of the EMIT imaging spectrometer. "Remote sensing of environment", 15 Març 2024, vol. 303, núm. article 113986.
0034-4257
http://hdl.handle.net/2117/400337
10.1016/j.rse.2023.113986
eng
https://www.sciencedirect.com/science/article/pii/S0034425723005382
info:eu-repo/grantAgreement/EC/H2020/773051/EU/FRontiers in dust minerAloGical coMposition and its Effects upoN climaTe/FRAGMENT
http://creativecommons.org/licenses/by-nc/4.0/
Open Access
Attribution-NonCommercial 4.0 International
oai:upcommons.upc.edu:2117/3426612022-10-09T00:50:55Zcom_2117_79680com_2117_28579com_2117_28577com_2117_184547com_2117_184544com_2117_99671com_2117_28581com_2117_15797col_2117_79868col_2117_184729col_2117_99679col_2117_3055openAccess
Dynamic model for axial motion of horizontal pelton turbine and validation in actual failure case
Rodriguez Godoy, Cristian Gabriel
Egusquiza Estévez, Eduard
Egusquiza Montagut, Mònica
Reyes, S.
Zambrano, D.
Tapia Ladino, Juan Antonio
Universitat Politècnica de Catalunya. Departament d'Enginyeria de Projectes i de la Construcció
Universitat Politècnica de Catalunya. Doctorat en Enginyeria Mecànica, Fluids i Aeronàutica
Universitat Politècnica de Catalunya. CDIF - Centre de Diagnòstic Industrial i Fluidodinàmica
Àrees temàtiques de la UPC::Enginyeria mecànica::Mecànica de fluids
Pelton turbines are important machines for power generation from a renewable energy source such as water. For power rates below 20 MW, the rotor of Pelton turbines is usually in horizontal position. Considering ideal mounting and operating conditions, there are no axial forces acting on the rotor. In practice, there is an hydraulic force due to the difference between nozzle centerline and bucket centerline, and there is a magnetic force due to the difference between axial position of stator and rotor magnetic field centers. &ese forces are supported by bearings. In this article, a nonlinear dynamic model considering these axial forces and bearings behavior is presented and solved for two different actual Pelton turbines. &e nonlinear dynamic model allows determining and evaluating the source of axial motion and therefore provides valuable information in order to reduce it when the axial displacement is high enough to produce damage.
2021-03-29T09:14:01Z
2021-03-29T09:14:01Z
2020-01-01
Article
Rodriguez, C. [et al.]. Dynamic model for axial motion of horizontal pelton turbine and validation in actual failure case. "Shock and vibration", 1 Gener 2020, vol. 2020, p. 88119617/1-8811961/16.
1070-9622
http://hdl.handle.net/2117/342661
10.1155/2020/8811961
eng
https://www.hindawi.com/journals/sv/2020/8811961/
http://creativecommons.org/licenses/by-nc-nd/3.0/es/
Open Access
Attribution-NonCommercial-NoDerivs 3.0 Spain
oai:upcommons.upc.edu:2117/1233442021-05-16T14:50:01Zcom_2117_79680com_2117_28579com_2117_28577com_2117_79681com_2117_3837com_2117_28581com_2117_15797col_2117_79868col_2117_79693col_2117_3838col_2117_3055openAccess
Review of criteria for determining HFM minimum test duration
Gaspar Fàbregas, Kàtia
Casals Casanova, Miquel
Gangolells Solanellas, Marta
Universitat Politècnica de Catalunya. Departament de Tecnologia de l'Arquitectura
Universitat Politècnica de Catalunya. Departament d'Enginyeria de Projectes i de la Construcció
Universitat Politècnica de Catalunya. GRIC - Grup de Recerca i Innovació de la Construcció
Àrees temàtiques de la UPC::Edificació::Elements constructius d'edificis::Elements de tancament
The actual thermal behaviour of façades is important to identify suitable energy-saving measures and in- crease the energy performance of existing buildings. However, the accuracy of in situ measurements of façades’ U-values varies widely, mostly due to inadequate test durations. The aim of this paper was to evaluate the minimum duration of in situ experimental campaigns to measure the thermal transmittance of existing buildings’ façades using the heat flow meter method, and to analyse the thermal performance of the façade during the test. Minimum test duration was determined according to data quality criteria, variability of results criteria, and standardized criteria for different ranges of theoretical thermal trans- mittance and for the same range of average temperature difference. Then, the minimum test duration results were compared. The findings show that ISO criteria are more sensitive and provide more accurate results, requiring a longer test duration. However, when certification is not required, the duration of the test could be reduced by applying data quality and variability of results criteria. The minimum duration of experimental campaigns depends on the theoretical thermal transmittance and the stability of climatic conditions. Moreover, results are more accurate when the dynamic method is used.
2018-10-31T10:02:00Z
2020-04-29T00:25:38Z
2018-10-01
Article
Gaspar, K., Casals, M., Gangolells, M. Review of criteria for determining HFM minimum test duration. "Energy and buildings", 1 Octubre 2018, vol. 176, p. 360-370.
0378-7788
http://hdl.handle.net/2117/123344
10.1016/j.enbuild.2018.07.049
eng
http://creativecommons.org/licenses/by-nc-nd/3.0/es/
Open Access
Attribution-NonCommercial-NoDerivs 3.0 Spain
oai:upcommons.upc.edu:2117/1155932020-07-23T20:25:14Zcom_2117_79680com_2117_28579com_2117_28577com_2117_3837com_2117_28581com_2117_15797col_2117_79868col_2117_3838col_2117_3055openAccess
Reduced-order modeling for energy performance contracting
Giretti, Alberto
Vaccarini, M.
Casals Casanova, Miquel
Macarulla Martí, Marcel
Fuertes Casals, Alba
Jones, Rory
Universitat Politècnica de Catalunya. Departament d'Enginyeria de Projectes i de la Construcció
Universitat Politècnica de Catalunya. GRIC - Grup de Recerca i Innovació de la Construcció
Àrees temàtiques de la UPC::Edificació
Àrees temàtiques de la UPC::Energies::Eficiència energètica
Buildings subject to Energy Performance Contracts (EPCs) are usually quite complex public buildings, sometimes relatively old and usually barely documented from the technical standpoint. Gathering comprehensive and reliable technical information is a time consuming and expensive process that has to be carried out within the submission deadline. In these conditions, the standard approach to energy performance forecasting which uses detailed simulation is practically unfeasible.
This paper proposes a reduced-order modeling approach that is tailored to the EPC tendering phase. The proposed methodology extends a third order building model, introducing explicit, albeit still abstract, representations of the heating/cooling system, of the weather influence and of the end-user gains. The extended parameter set reflects to a large degree the information that is readily available in practical on-site surveying, or that can be easily calculated from that information. As a consequence of the simplified physics, a knowledge driven, practical calibration procedure, which provides an effective way of reducing uncertainty, is proposed. The calibration procedure analyses the uncertainty present in the available knowledge and uses the constraints imposed by the implemented physics on the parameters’ dynamic to assess their value estimation.
The modeling approach is exemplified through three case studies: the first one provides the comparison of the reduced-order model predictions with the outcomes of a detailed model of a small hospital, the second one is used to compare the reduced-order model predictions with the detailed measurements of energy consumption of a real building, and the third case study exemplifies the use in operational context with scarce information.
2018-03-22T18:43:48Z
2020-03-01T01:25:59Z
2018-05-15
Article
Giretti, A., Vaccarini, M., Casals, M., Macarulla, M., Fuertes, A., Jones, R. Reduced-order modeling for energy performance contracting. "Energy and buildings", 15 Maig 2018, vol. 167, p. 216-230.
0378-7788
http://hdl.handle.net/2117/115593
10.1016/j.enbuild.2018.02.049
eng
https://www.sciencedirect.com/science/article/pii/S0378778817337799
http://creativecommons.org/licenses/by-nc-nd/3.0/es/
Open Access
Attribution-NonCommercial-NoDerivs 3.0 Spain
oai:upcommons.upc.edu:2117/1161562021-03-11T05:23:09Zcom_2117_79680com_2117_28579com_2117_28577com_2117_3307com_2117_28581com_2117_15797col_2117_79868col_2117_3308col_2117_3055openAccess
Light pollution offshore: Zenithal sky glow measurements in the mediterranean coastal waters
Ges Cros, Xavier
Bará Viñas, Salvador
García Gil, Manuel
Zamorano, J
Ribas, Salvador
Masana, Eduard
Universitat Politècnica de Catalunya. Departament d'Enginyeria de Projectes i de la Construcció
Universitat Politècnica de Catalunya. GIIP - Grup de Recerca en Enginyeria de Projectes: Disseny i Sostenibilitat
Àrees temàtiques de la UPC::Enginyeria química
Light pollution is a worldwide phenomenon whose consequences for the natural environment and the human health are being intensively studied nowadays. Most published studies address issues related to light pollution inland. Coastal waters, however, are spaces of high environmental interest, due to their biodiversity richness and their economical significance. The elevated population density in coastal regions is accompanied by correspondingly large emissions of artificial light at night, whose role as an environmental stressor is increasingly being recognized. Characterizing the light pollution levels in coastal waters is a necessary step for protecting these areas. At the same time, the marine surface environment provides a stage free from obstacles for measuring the dependence of the skyglow on the distance to the light polluting sources, and validating (or rejecting) atmospheric light propagation models. In this work we present a proof-of-concept of a gimbal measurement system that can be used for zenithal skyglow measurements on board both small boats and large vessels under actual navigation conditions. We report the results obtained in the summer of 2016 along two measurement routes in the Mediterranean waters offshore Barcelona, travelling 9 and 31.7¿km away from the coast. The atmospheric conditions in both routes were different from the ones assumed for the calculation of recently published models of the anthropogenic sky brightness. They were closer in the first route, whose results approach better the theoretical predictions. The results obtained in the second route, conducted under a clearer atmosphere, showed systematic differences that can be traced back to two expected phenomena, which are a consequence of the smaller aerosol content: the reduction of the anthropogenic sky glow at short distances from the sources, and the slower decay rate of brightness with distance, which gives rise to a relative excess of brightness at large distances from the coastline
2018-04-11T09:37:46Z
2020-05-01T00:26:09Z
2018-05
Article
Ges Cros, X., Bará, S., Garcia Gil, M., Zamorano, J., Ribas, S., Masana, E. Light pollution offshore: Zenithal sky glow measurements in the mediterranean coastal waters. "Journal of quantitative spectroscopy and radiative transfer", Maig 2018, vol. 210, p. 91-100.
0022-4073
http://hdl.handle.net/2117/116156
10.1016/j.jqsrt.2018.02.014
eng
https://www.sciencedirect.com/science/article/pii/S0022407317308634?via%3Dihub
info:eu-repo/grantAgreement/EC/H2020/688135/EU/A Collective Awareness Platform for Promoting Dark Skies in Europe/STARS4ALL
http://creativecommons.org/licenses/by-nc-nd/3.0/es/
Open Access
Attribution-NonCommercial-NoDerivs 3.0 Spain
oai:upcommons.upc.edu:2117/1880732021-03-11T05:28:13Zcom_2117_79680com_2117_28579com_2117_28577com_2117_3307com_2117_28581com_2117_15797col_2117_79868col_2117_3308col_2117_3055openAccess
Water management in the media and research: Dissemination in catalonia and its capture by private companies
Jordà Capdevila, Dídac
Canals Casals, Lluc
Universitat Politècnica de Catalunya. Departament d'Enginyeria de Projectes i de la Construcció
Universitat Politècnica de Catalunya. GIIP - Grup de Recerca en Enginyeria de Projectes: Disseny i Sostenibilitat
Àrees temàtiques de la UPC::Economia i organització d'empreses
As a vital resource for human well-being, drinking water is considered a public good worldwide. However, big companies are sometimes in charge of its management leading to an interested distribution of benefits. One of the mechanisms of power that these private companies employ to retain access to water management is the control of the dissemination of information. Thus, the objective of this study is to evaluate the influence of big companies on the dissemination of water management in Catalonia by focusing on two groups of actors: the general public and experts. Accordingly, we analyse the association of big companies with mass media and research institutions. First, we scrutinise local newspapers for the period 2010-2016 to compile news about water management and companies whose activity is related to water. We found some interesting correlations between the amount and subject of the news, the editorial lines and relevant facts. Second, we search scientific articles about water management written by authors from Catalan research institutions. We analyse the production, research topic and funding. In this sense, we found that technological centres are the most funded by private companies and that public funding is more related to topics related to the ecosystem functioning
2020-05-19T10:47:20Z
2020-05-19T10:47:20Z
2020-05-12
Article
Jordà-Capdevila, D.; Canals Casals, L. Water management in the media and research: Dissemination in catalonia and its capture by private companies. "International and multidisciplinary journal of social sciences-RIMCIS", 12 Maig 2020, vol. 8, núm. 3, p. 267-288.
2014-3680
http://hdl.handle.net/2117/188073
10.17583/rimcis.2019.4600
eng
https://hipatiapress.com/hpjournals/index.php/rimcis/article/view/4600/2938
Open Access
oai:upcommons.upc.edu:2117/1929022020-10-11T02:23:15Zcom_2117_79680com_2117_28579com_2117_28577com_2117_3837com_2117_28581com_2117_15797col_2117_79868col_2117_3838col_2117_3055openAccess
Results and insight gained from applying the EnergyCat energy-saving serious game in UK social housing
Hafner, Rebecca J.
Fuertes Casals, Alba
Pahl, Sabine
Boomsma, Christine
Jones, Rory V.
Casals Casanova, Miquel
Gangolells Solanellas, Marta
Universitat Politècnica de Catalunya. Departament d'Enginyeria de Projectes i de la Construcció
Universitat Politècnica de Catalunya. GRIC - Grup de Recerca i Innovació de la Construcció
Àrees temàtiques de la UPC::Energies
Àrees temàtiques de la UPC::Edificació::Impacte ambiental
Concerns about climate change associated with the combustion of fossil fuels urge a call for widespread reductions in household energy use. Determining means of achieving this is a key challenge faced by environmental scientists. The current research presents insights gained from a 12-month empirical trial of new serious game for energy, ‘EnergyCat’; which was designed to encourage household energy reductions in the UK social housing sector. Effects of gameplay on consumption behaviours and energy awareness were explored using 82 UK social housing households (versus a no-game control). Results indicated the intervention did not lead to any substantive changes in awareness or consumption practices. However, post-intervention feedback highlighted several issues in terms of game design and usability that may explain why the game failed to change behaviour in this instance. We provide a framework of suggestions as to how the game design process could be improved in order to engage residents in future, including use of adaptive fonts for older residents, and provision of clearer instructions on gameplay objectives at the outset. In addition, researchers should ensure close collaboration is maintained with residents throughout the design process in future efforts, in order to maximise likelihood of ongoing engagement from this population.
2020-07-13T11:32:25Z
2020-07-13T11:32:25Z
2020-06
Article
Hafner, R. [et al.]. Results and insight gained from applying the EnergyCat energy-saving serious game in UK social housing. "International journal of serious games", Juny 2020, vol. 7, núm. 2, p. 27-48.
2384-8766
http://hdl.handle.net/2117/192902
10.17083/ijsg.v7i2.333
eng
https://journal.seriousgamessociety.org/index.php/IJSG/article/view/333/368
info:eu-repo/grantAgreement/EC/H2020/649673/EU/Energy Game for Awareness of energy efficiency in social housing communities/EnerGAware
https://creativecommons.org/licenses/by-nc-nd/4.0/
Open Access
Attribution-NonCommercial-NoDerivs 4.0
Serious Games Society
oai:upcommons.upc.edu:2117/1254362022-09-18T00:56:36Zcom_2117_79680com_2117_28579com_2117_28577com_2117_3837com_2117_28581com_2117_15797col_2117_79868col_2117_3838col_2117_3055openAccess
Effects of the type of facade on the energy performance of office buildings representative of the city of Barcelona
Planas Rodríguez, Carla
Cuerva Contreras, Eva
Alavedra Ribot, Pere
Universitat Politècnica de Catalunya. Departament d'Enginyeria de Projectes i de la Construcció
Universitat Politècnica de Catalunya. GRIC - Grup de Recerca i Innovació de la Construcció
Àrees temàtiques de la UPC::Energies
The aim of this article is to analyze the energy efficiency issues of eight office buildings built in Barcelona. Using computer simulations to compare energy demand and level of indoor natural lighting, it is demonstrated that there are considerable differences in demand – in some cases more than double – depending on the type of facade, and these differences are not directly related to the economic cost of the construction solutions used. In all cases, the cooling demand represents more than 80% of the total climate control demand, and solar radiation is the parameter with the greatest effect. The overall solar factor of the facade stands out as a key variable to control to both reduce the overall energy needs of a building and separate the cooling demand from the orientation of the building. The level of natural lighting is a differentiating element only in cases that had similar thermal energy performance.
2018-12-05T10:52:29Z
2018-12-05T10:52:29Z
2018-01-01
Article
Planas, C., Cuerva, E., Alavedra, P. Effects of the type of facade on the energy performance of office buildings representative of the city of Barcelona. "Ain shams engineering journal", 1 Gener 2018.
2090-4479
http://hdl.handle.net/2117/125436
10.1016/j.asej.2017.04.009
eng
https://www.sciencedirect.com/science/article/pii/S2090447917301259?via%3Dihub
http://creativecommons.org/licenses/by-nc-nd/3.0/es/
Open Access
Attribution-NonCommercial-NoDerivs 3.0 Spain
Elsevier
oai:upcommons.upc.edu:2117/1870962021-05-13T09:11:11Zcom_2117_79680com_2117_28579com_2117_28577com_2117_3837com_2117_28581com_2117_15797col_2117_79868col_2117_3838col_2117_3055openAccess
Comparison of methodologies for assessing desert dust contribution to regional PM10 and PM2.5 levels: a one-year study over Portugal
Gama, Carla
Pio, Casimiro
Monteiro, Alexandra
Russo, Michael
Fernandes, A.P.
Borrego, Carlos
Baldasano Recio, José María
Tchepel, Oxana
Universitat Politècnica de Catalunya. Departament d'Enginyeria de Projectes i de la Construcció
Universitat Politècnica de Catalunya. GRIC - Grup de Recerca i Innovació de la Construcció
Àrees temàtiques de la UPC::Desenvolupament humà i sostenible::Degradació ambiental::Contaminació atmosfèrica
Desert dust outbreaks may affect air quality. This study estimates the importance of African dust contribution to the PM10 and PM2.5 concentrations observed in rural regional background sites in Portugal. Desert dust contribution is evaluated by two different approaches: A measurement-approach methodology based on the monthly moving 40th percentile, and a model-approach methodology based on WRF-CHIMERE simulations, whose performance is also assessed within this work. Several desert dust episodes affected atmospheric aerosols in the planetary boundary layer over Portugal during 2016. Their intensity was variable, with at least two events (21–22 February and 27–28 October) contributing to exceedances to the PM10 daily limit value defined in the European Air Quality Directive. African dust contributions obtained for the year 2016 with the measurement-approach methodology are higher than the ones simulated by WRF-CHIMERE. Contributions to PM10 and to PM2.5 concentrations range from 0 to 90 µg m-3 and from 0 to 30 µg m-3, respectively, in most of the regions and days. Caution must be employed when using measurement-approach methodologies to quantify dust contributions to PM levels when forest fires occur simultaneously with the long-range transport of desert dust, as happened in August 2016.
2020-05-11T16:46:20Z
2020-05-11T16:46:20Z
2020-02
Article
Gama, C. [et al.]. Comparison of methodologies for assessing desert dust contribution to regional PM10 and PM2.5 levels: a one-year study over Portugal. "Atmosphere", Febrer 2020, vol. 11, núm. 2, p. 134:1-134:21.
2073-4433
http://hdl.handle.net/2117/187096
10.3390/atmos11020134
eng
https://www.mdpi.com/2073-4433/11/2/134
http://creativecommons.org/licenses/by/3.0/es/
Open Access
Attribution 3.0 Spain
oai:upcommons.upc.edu:2117/3751442024-03-03T20:33:54Zcom_2117_79680com_2117_28579com_2117_28577com_2117_3837com_2117_28581com_2117_15797col_2117_79868col_2117_3838col_2117_3055
Influence of social housing models in the development of urban agriculture in Mexico
Nadal, Ana
Rodríguez-Labajos, Beatriz
Cuerva Contreras, Eva
Josa Garcia-Tornel, Alejandro
Rieradevall Pons, Joan
Universitat Politècnica de Catalunya. Departament d'Enginyeria de Projectes i de la Construcció
Universitat Politècnica de Catalunya. GRIC - Grup de Recerca i Innovació de la Construcció
Àrees temàtiques de la UPC::Desenvolupament humà i sostenible
This study examines urbanization patterns linked to social housing units and the way in which such patterns influence the practice of urban agriculture (UA) in Mexico. Due to the transformations that take place over time in Mexican social-housing units, impervious surfaces tend to increase at the expense of greenspace and UA possibilities. The research aims to identify the negative impact of social housing transformations on UA and suggest a policy framework for sustainable housing development in Mexico. The empirical analysis distinguishes four social housing typologies within two emblematic neighborhoods in the city of Merida, Mexico: Las Magnolias and Ampliación Tixcacal-Opichén. A survey of 157 housing units combines quantitative metrics and qualitative descriptors to unveil the detrimental impact of development on UA. The results show that UA takes place within the building lots and around the housing units, rather than in public urban areas. 60% of the sampled units practiced UA, with traditional backyard gardens being the most common modality. The research findings point to a systematic expansion of impervious surfaces, limitation of both cultivation choices and crop variety, and major restrictions on UA practices. Social housing represents the bulk of residential developments in Mexico (42.7% out of 35.5 million housing units). Left unregulated, the types of social housing transformations that have been empirically verified in this study endanger the availability of green space as the primary resource for UA. This research sheds light on critical policy changes and formulations that are required to enhance UA practices and to establish greener cities and more sustainable housing development.
2022-10-27T11:38:45Z
2022-11
10000-01-01
Article
Nadal, A. [et al.]. Influence of social housing models in the development of urban agriculture in Mexico. "Land use policy", Novembre 2022, vol. 122, núm. article 106391, p. 1-15
0264-8377
http://hdl.handle.net/2117/375144
10.1016/j.landusepol.2022.106391
eng
https://www.sciencedirect.com/science/article/abs/pii/S0264837722004185
Restricted access - publisher's policy
Attribution-NonCommercial-NoDerivatives 4.0 International
oai:upcommons.upc.edu:2117/877792020-07-23T20:28:13Zcom_2117_79680com_2117_28579com_2117_28577com_2117_3837com_2117_28581com_2117_15797col_2117_79868col_2117_3838col_2117_3055openAccess
Energy performance assessment of an intelligent energy management system
Gangolells Solanellas, Marta
Casals Casanova, Miquel
Forcada Matheu, Núria
Macarulla Martí, Marcel
Giretti, Alberto
Universitat Politècnica de Catalunya. Departament d'Enginyeria de Projectes i de la Construcció
Universitat Politècnica de Catalunya. GRIC - Grup de Recerca i Innovació de la Construcció
Àrees temàtiques de la UPC::Energies::Eficiència energètica
Àrees temàtiques de la UPC::Enginyeria civil::Infraestructures i modelització dels transports
Although energy management systems are expected to result in decreased energy consumption, it is important not to overlook the energy used until commissioning (including raw materials acquisition, manufacturing and transportation) and during the usage phase (including operation and maintenance). This paper examines the energy performance of an intelligent energy management system for underground metro stations. The results show that the energy management system has high energy performance in terms of energy payback time and energy return factor, due to its low cumulative energy demand and its potential for energy savings. When we assumed that the lifespan of energy management systems may vary between 5 and 10 years, their cumulative energy demand was found to range between 505,316 and 852,493 MJp eq. In all cases, the operating energy was found to far outweigh the embodied energy (68-81%). The energy management system was implemented in a pilot underground station and was found to provide an energy saving of 13.2±1.1% of the total energy consumption of the pilot station. The energy payback time of the energy management system for underground stations was found to range between 40 and 55 days. Consequently, the system pays back between 33 and 91 times the energy invested in it. The results of this research provide valuable information for stakeholders in the energy management systems industry, as they contribute to ascertaining the sustainability of products.
2016-06-07T16:50:18Z
2018-04-03T00:30:18Z
2016-03-01
Article
Gangolells, M., Casals, M., Forcada, N., Macarulla, M., Giretti, A. Energy performance assessment of an intelligent energy management system. "Renewable and sustainable energy reviews", 01 Març 2016, vol. 55, p. 662-667.
1364-0321
http://hdl.handle.net/2117/87779
10.1016/j.rser.2015.11.006
eng
http://www.sciencedirect.com/science/article/pii/S1364032115012587
http://creativecommons.org/licenses/by-nc-nd/3.0/es/
Open Access
oai:upcommons.upc.edu:2117/1890362022-05-23T00:26:38Zcom_2117_79680com_2117_28579com_2117_28577com_2117_79679com_2117_79723com_2117_28581com_2117_184834com_2117_3837com_2117_15797col_2117_79868col_2117_79694col_2117_79768col_2117_184843col_2117_3838col_2117_3055openAccess
Structural health monitoring with distributed optical fiber sensors of tunnel lining affected by nearby construction activity
Gómez i Esteve, Judit
Casas Rius, Joan Ramon
Villalba Herrero, Sergi
Universitat Politècnica de Catalunya. Departament d'Enginyeria Civil i Ambiental
Universitat Politècnica de Catalunya. Departament d'Enginyeria de Projectes i de la Construcció
Universitat Politècnica de Catalunya. EC - Enginyeria de la Construcció
Universitat Politècnica de Catalunya. GRIC - Grup de Recerca i Innovació de la Construcció
Àrees temàtiques de la UPC::Enginyeria civil::Materials i estructures
Àrees temàtiques de la UPC::Enginyeria civil::Geotècnia::Túnels i excavacions
This paper addresses the implementation of a Distributed Optical Fiber Sensor system (DOFS) to the TMB L-9 metro tunnel in Barcelona for Structural Health Monitoring (SHM) purposes as the former could potentially be affected by the construction of a nearby residential building. With the aim of assessing the performance of this newly developed monitoring technology, an in-depth analysis on the collected strain readings is performed from which innovative data post-processing techniques are developed. Finally, the reliability of the installed DOFSs system is studied by means of a comparison with a theoretical model of the site’s structural conditions.
2020-05-26T11:30:39Z
2022-05-23T00:26:38Z
2020-09
Article
Gómez i Esteve, J.; Casas, J.; Villalba, S. Structural health monitoring with distributed optical fiber sensors of tunnel lining affected by nearby construction activity. "Automation in construction", Setembre 2020, vol. 117, p. 103261:1-103261:18.
0926-5805
http://hdl.handle.net/2117/189036
10.1016/j.autcon.2020.103261
eng
https://www.sciencedirect.com/science/article/abs/pii/S0926580519314967
https://creativecommons.org/licenses/by-nc-nd/4.0/
Open Access
© 2019. Elsevier
Attribution-NonCommercial-NoDerivatives 4.0 International
oai:upcommons.upc.edu:2117/3993322024-02-15T14:56:29Zcom_2117_79680com_2117_28579com_2117_28577com_2117_80518com_2117_23714com_2117_28578com_2117_184550com_2117_184544com_2117_15797col_2117_79868col_2117_80537col_2117_184598col_2117_3055openAccess
Uncertainties in source allocation of carbonaceous aerosols in a Mediterranean region
Navarro Barboza, Héctor
Pandolfi, Marco
Guevara Vilardell, Marc
Enciso Morales, Santiago Adolfo
Tena Medina, Carles
Via González, Marta
Yús-Díez, Jesús
Reche Andúgar, Cristina
Perez Lozano, Noemi
Alastuey Urós, Andrés
Querol Carceller, Xavier
Jorba Casellas, Oriol
Universitat Politècnica de Catalunya. Doctorat en Enginyeria Ambiental
Universitat Politècnica de Catalunya. Departament d'Enginyeria de Projectes i de la Construcció
Barcelona Supercomputing Center
Àrees temàtiques de la UPC::Desenvolupament humà i sostenible::Enginyeria ambiental
Understanding the atmospheric processes involving carbonaceous aerosols (CAs) is crucial for assessing air pollution impacts on human health and climate. The sources and formation mechanisms of CAs are not well understood, making it challenging to quantify impacts in models. Studies suggest residential wood combustion (RWC) and traffic significantly contribute to CAs in Europe’s urban and rural areas. Here, we used an atmospheric chemistry model (MONARCH) and three different emission inventories (two versions of the European-scale emission inventory CAMS-REG_v4 and the HERMESv3 detailed national inventory for Spain) to assess the uncertainties in CAs simulation and source allocation (from traffic, RWC, shipping, fires and others) in Northeast Spain. For this, black carbon (BC) and organic aerosol (OA) measurements performed at three supersites representing different environments (urban, regional and remote) were used. Our findings show the importance of model resolution and detailed emission input data in accurately reproducing BC/OA observations. Even though emissions of total particulate matter are rather consistent between inventories in Spain, we found discrepancies between them mainly related to the spatiotemporal disaggregation (particularly relevant for traffic and RWC) and the treatment of the condensable fraction of CAs in RWC (changes in the speciation of elemental/organic carbon). The main source contribution to BC concentrations in the urban site is traffic, accounting for (January/July) in close agreement with the fossil contribution derived from observations (), followed by RWC () and shipping emissions ( ). An over-representation of RWC (winter) and shipping (summer) is obtained with CAMS-REG_v4. Noteworthy uncertainties arise in OA results due to condensables in emissions and a limited secondary aerosol production in the model. These findings offer insights into MONARCH’s effectiveness in simulating CAs concentrations and source contribution in Northeast Spain. The study highlights the benefits of combining new datasets and modeling techniques to refine emission inventories and better understand and mitigate air pollution impacts.
2024-01-15T09:47:03Z
2024-01-15T09:47:03Z
2024-01
Article
Navarro-Barboza, H. [et al.]. Uncertainties in source allocation of carbonaceous aerosols in a Mediterranean region. "Environment international", 2024, vol. 183, article 108252.
1873-6750
http://hdl.handle.net/2117/399332
10.1016/j.envint.2023.108252
eng
https://www.sciencedirect.com/science/article/pii/S0160412023005251
info:eu-repo/grantAgreement/AEI/Plan Estatal de Investigación Científica y Técnica y de Innovación 2017-2020/RTI2018-099894-B-I00/ES/QUIMICA DEL CARBON MARRON: MODELIZACION DE LA ABSORCION DE AMONIACO POR LOS AEROSOLES ORGANICOS SECUNDARIOS Y SU EFECTO EN EL FORZAMIENTO RADIATIVO/
info:eu-repo/grantAgreement/AEI/Plan Estatal de Investigación Científica y Técnica y de Innovación 2017-2020/PID2019-108990RB-I00/ES/CAMBIOS EN LA COMPOSICION DE LOS AEROSOLES Y SUS IMPLICACIONES EN CALIDAD DEL AIRE Y CLIMA EN EL NE DE ESPAÑA/
info:eu-repo/grantAgreement/EC/H2020/101036245/EU/Research Infrastructures Services Reinforcing Air Quality Monitoring Capacities in European Urban & Industrial AreaS (RI-URBANS)/RI-URBANS
http://creativecommons.org/licenses/by/4.0/
Open Access
Attribution 4.0 International
Elsevier
oai:upcommons.upc.edu:2117/871712020-07-23T20:30:03Zcom_2117_79680com_2117_28579com_2117_28577com_2117_3837com_2117_28581com_2117_15797col_2117_79868col_2117_3838col_2117_3055openAccess
Energy mapping of existing building stock in Spain
Gangolells Solanellas, Marta
Casals Casanova, Miquel
Forcada Matheu, Núria
Macarulla Martí, Marcel
Cuerva Contreras, Eva
Universitat Politècnica de Catalunya. Departament d'Enginyeria de Projectes i de la Construcció
Universitat Politècnica de Catalunya. GRIC - Grup de Recerca i Innovació de la Construcció
Àrees temàtiques de la UPC::Energies::Eficiència energètica
Energy performance certificate databases are a key tool for mapping national building stock and thus fostering greater overall energy efficiency. This paper presents an insight into the energy performance of residential and tertiary sector buildings in Spain, through an analysis of the first 129,635 energy performance certificates issued for existing buildings, collected by the Catalan Institute of Energy. Most of the residential buildings or building units that were studied were “E” class (53.6%). Single-family houses were found to use more energy on average (248.0 kWhp/m2) than individual dwellings (183.2 kWhp/m2). Tertiary sector buildings were found to have slightly better energy performance (26.4% of buildings were rated “D class”), with an average energy consumption of 317.8 kWhp/m2. Modern buildings consume less energy, as they must meet the higher energy performance requirements stated in thermal building regulations. Residential buildings or building units located in hotter climate zones consume slightly less energy than those located in colder zones, mainly because heating accounts for a high percentage of overall energy expenditure (70–75% in residential buildings). A significant proportion of the energy consumed in tertiary sector buildings is for lighting (37.2%). This research defines the current energy consumption baseline of existing buildings in Spain. The results can help to prioritize energy conservation efforts according to building type, construction period, climate zone and specific end-uses. They may also help public authorities to plan future energy policies, and construction practitioners to identify market segments and business strategies.
2016-05-18T15:42:30Z
2018-02-01T01:30:32Z
2016-01-20
Article
Gangolells, M., Casals, M., Forcada, N., Macarulla, M., Cuerva, E. Energy mapping of existing building stock in Spain. "Journal of cleaner production", 20 Gener 2016, vol. 112, núm. 5, p. 3895-3904.
0959-6526
http://hdl.handle.net/2117/87171
10.1016/j.jclepro.2015.05.105
eng
http://www.sciencedirect.com/science/article/pii/S0959652615006848
http://creativecommons.org/licenses/by-nc-nd/3.0/es/
Open Access
oai:upcommons.upc.edu:2117/1167382020-07-23T20:30:27Zcom_2117_79680com_2117_28579com_2117_28577com_2117_3837com_2117_28581com_2117_15797col_2117_79868col_2117_3838col_2117_3055openAccess
Estimation of a room ventilation air change rate using a stochastic grey-box modelling approach
Macarulla Martí, Marcel
Casals Casanova, Miquel
Forcada Matheu, Núria
Gangolells Solanellas, Marta
Giretti, Alberto
Universitat Politècnica de Catalunya. Departament d'Enginyeria de Projectes i de la Construcció
Universitat Politècnica de Catalunya. GRIC - Grup de Recerca i Innovació de la Construcció
Àrees temàtiques de la UPC::Edificació::Instal·lacions i acondicionament d'edificis::Instal·lacions de climatització
The measurement of ventilation air change rate is a difficult, expensive task in buildings. Usually, the tracer-gas mass balance equation is used to determine ventilation air change rates. This method uses an ordinary differential equation. Consequently, it cannot deal with disturbances that enter the system, such as the influence of unrecognized and unmodelled inputs or the measurement noise. The use of the stochastic grey-box modelling approach, which is less common in the ventilation field, can help to deal with disturbances that can affect the system. The objective of this paper is to assess the potential of using the stochastic grey-box modelling approach to estimate the ventilation air change rate. The modelling is based on the stochastic differential equation of tracer-gas mass balance. The results show that this approach produces robust estimations to determine the ventilation air change rate of a room.
2018-04-26T13:00:23Z
2020-05-01T00:26:28Z
2018-08
Article
Macarulla, M., Casals, M., Forcada, N., Gangolells, M., Giretti, A. Estimation of a room ventilation air change rate using a stochastic grey-box modelling approach. "Measurement", Agost 2018, vol. 124, p. 539-548.
0263-2241
http://hdl.handle.net/2117/116738
10.1016/j.measurement.2018.04.029
eng
https://www.sciencedirect.com/science/article/pii/S0263224118303038
http://creativecommons.org/licenses/by-nc-nd/3.0/es/
Open Access
Attribution-NonCommercial-NoDerivs 3.0 Spain
oai:upcommons.upc.edu:2117/3354622022-01-01T01:26:59Zcom_2117_3480com_2117_28581com_2117_28577com_2117_79680com_2117_28579com_2117_79677com_2117_98851com_2117_15797col_2117_3481col_2117_79868col_2117_79695col_2117_103655col_2117_3055openAccess
A review of gas-surface interaction models for orbital aerodynamics applications
Livadiotti, Sabrina
Crisp, Nicholas H.
Roberts, Peter C.E
García-Almiñana, Daniel
Rodríguez Donaire, Silvia
Sureda Anfres, Miquel
Universitat Politècnica de Catalunya. Departament d'Enginyeria de Projectes i de la Construcció
Universitat Politècnica de Catalunya. Departament de Física
Universitat Politècnica de Catalunya. TUAREG - Turbulence and Aerodynamics in Mechanical and Aerospace Engineering Research Group
Universitat Politècnica de Catalunya. L'AIRE - Laboratori Aeronàutic i Industrial de Recerca i Estudis
Àrees temàtiques de la UPC::Física::Astronomia i astrofísica
Àrees temàtiques de la UPC::Aeronàutica i espai::Astronàutica
Renewed interest in Very Low Earth Orbits (VLEO) - i.e. altitudes below 450 km - has led to an increased demand for accurate environment characterisation and aerodynamic force prediction. While the former requires knowledge of the mechanisms that drive density variations in the thermosphere, the latter also depends on the interactions between the gas-particles in the residual atmosphere and the surfaces exposed to the flow. The determination of the aerodynamic coefficients is hindered by the numerous uncertainties that characterise the physical processes occurring at the exposed surfaces. Several models have been produced over the last 60 years with the intent of combining accuracy with relatively simple implementations. In this paper the most popular models have been selected and reviewed using as discriminating factors relevance with regards to orbital aerodynamics applications and theoretical agreement with gas-beam experimental data. More sophisticated models were neglected, since their increased accuracy is generally accompanied by a substantial increase in computation times which is likely to be unsuitable for most space engineering applications. For the sake of clarity, a distinction was introduced between physical and scattering kernel theory based gas-surface interaction models. The physical model category comprises the Hard Cube model, the Soft Cube model and the Washboard model, while the scattering kernel family consists of the Maxwell model, the Nocilla-Hurlbut-Sherman model and the Cercignani-Lampis-Lord model. Limits and assets of each model have been discussed with regards to the context of this paper. Wherever possible, comments have been provided to help the reader to identify possible future challenges for gas-surface interaction science with regards to orbital aerodynamic applications.
2021-01-18T14:24:25Z
2022-01-01T01:26:59Z
2020-11
Article
Livadiotti, S. [et al.]. A review of gas-surface interaction models for orbital aerodynamics applications. "Progress in aerospace sciences", Novembre 2020, vol. 119, p. 100675/1-100675/16.
0376-0421
https://arxiv.org/pdf/2010.00489.pdf
http://hdl.handle.net/2117/335462
10.1016/j.paerosci.2020.100675
eng
https://www.sciencedirect.com/science/article/abs/pii/S0376042120300877
info:eu-repo/grantAgreement/EC/H2020/737183/EU/DISCOVERER – DISruptive teChnOlogies for VERy low Earth oRbit platforms/DISCOVERER
http://creativecommons.org/licenses/by-nc-nd/4.0/
Open Access
Attribution-NonCommercial-NoDerivs 4.0
oai:upcommons.upc.edu:2117/840732020-07-23T20:30:41Zcom_2117_79680com_2117_28579com_2117_28577com_2117_3837com_2117_28581com_2117_15797col_2117_79868col_2117_3838col_2117_3055
Model predictive energy control of ventilation for underground stations
Vaccarini, M.
Giretti, Alberto
Tolve, L.C.
Casals Casanova, Miquel
Universitat Politècnica de Catalunya. Departament d'Enginyeria de Projectes i de la Construcció
Universitat Politècnica de Catalunya. GRIC - Grup de Recerca i Innovació de la Construcció
Àrees temàtiques de la UPC::Energies::Eficiència energètica
Smart building systems are opening up new markets, nevertheless the implementation of these novel technologies still lacks suitable and proven whole engineering solutions in complex buildings. This paper presents a detailed approach for the ventilation control of an underground space, as an example of application of the developed solution to a very harsh environment but also highly demanding in terms of energy consumption. The underground spaces are characterized by a particular thermal behavior, because of the continuous and huge thermal exchange they have with the outside, via the openings and the ground surrounding the majority of the building. The main objective of the developed methodology is to reduce energy consumption of ventilation control while maintaining acceptable comfort levels: succeeding in achieving this twofold goal in a real station and the generalization of the approach are the most relevant contributions of the paper. The developed solution is based on a Model-based Predictive Control algorithm used together with a proper monitoring platform. The model predictive control is based on a Bayesian environmental prediction model, which works in cooperation with a weather forecast web service, schedule-based predictions about trains and external fans and an occupancy detection system to appraise the real amount of people. The prediction model develops scenarios useful to allow the controller acting in advance in order to adapt the system to the current and future conditions of use, taking profit of the knowledge of the real ventilation demand. Finally, the proposed control architecture is applied to the Passeig de Gràcia metro station in Barcelona as a case study, validating the usefulness of the proposed approach and obtaining more than 30% of energy savings in the ventilation system, while maintaining the pre-existing comfort levels. The saving percentage values estimated by simulation are confirmed by the direct measures continuously taken on site through energy-meters.
2016-03-09T15:16:35Z
2016-03-15
10000-01-01
Article
Vaccarini, M., Giretti, A., Tolve, L., Casals, M. Model predictive energy control of ventilation for underground stations. "Energy and buildings", 15 Març 2016, vol. 116, p. 326-340.
0378-7788
http://hdl.handle.net/2117/84073
10.1016/j.enbuild.2016.01.020
eng
http://www.sciencedirect.com/science/article/pii/S0378778816300202
Restricted access - author's decision
oai:upcommons.upc.edu:2117/3816232023-02-19T02:10:30Zcom_2117_79680com_2117_28579com_2117_28577com_2117_184554com_2117_184544com_2117_79679com_2117_79723com_2117_28581com_2117_15797col_2117_79868col_2117_184712col_2117_79694col_2117_79768col_2117_3055openAccess
Operational and analytical modal analysis of a bridge using low-cost wireless Arduino-based accelerometers
Komarizadehasl, Seyedmilad
Huguenet, Pierre Antoine Nessim
Lozano, Fidel
Lozano Galant, José Antonio
Turmo Coderque, José
Universitat Politècnica de Catalunya. Doctorat en Enginyeria de la Construcció
Universitat Politècnica de Catalunya. Departament d'Enginyeria de Projectes i de la Construcció
Universitat Politècnica de Catalunya. Departament d'Enginyeria Civil i Ambiental
Universitat Politècnica de Catalunya. EC - Enginyeria de la Construcció
Àrees temàtiques de la UPC::Enginyeria civil::Materials i estructures::Materials i estructures de formigó
Arduino-based accelerometers are receiving wide attention from researchers to make long-term Structural Health Monitoring (SHM) feasible for structures with a low SHM budget. The current low-cost solutions found in the literature share some of the following drawbacks: (1) high noise density, (2) lack of wireless synchronization, (3) lack of automatic data acquisition and data management, and (4) lack of dedicated field tests aiming to compare mode shapes from Operational Modal Analysis (OMA) with those of a digital model. To solve these problems, a recently built short-span footbridge in Barcelona is instrumented using four Low-cost Adaptable Reliable Accelerometers (LARA). In this study, the automatization of the data acquisition and management of these low-cost solutions is studied for the first time in the literature. In addition, a digital model of the bridge under study is generated in SAP2000 using the available drawings and reported characteristics of its materials. The OMA of the bridge is calculated using Frequency Domain Decomposition (FDD) and Covariance Stochastic Subspace Identification (SSI-cov) methods. Using the Modal Assurance Criterion (MAC), the mode shapes of OMA are compared with those of the digital model. Finally, the acquired eigenfrequencies of the bridge obtained with a high-precision commercial sensor (HI-INC) showed a good agreement with those obtained with LARA.
2023-02-01T15:23:35Z
2023-02-01T15:23:35Z
2022-12
Article
Komarizadehasl, S. [et al.]. Operational and analytical modal analysis of a bridge using low-cost wireless Arduino-based accelerometers. "Sensors (Switzerland)", Desembre 2022, vol. 22, núm. 24, article 9808.
1424-8220
http://hdl.handle.net/2117/381623
10.3390/s22249808
eng
https://www.mdpi.com/1424-8220/22/24/9808
info:eu-repo/grantAgreement/AEI/PID2021-126405OB-C31
info:eu-repo/grantAgreement/AEI/PID2021-126405OB-C32
http://creativecommons.org/licenses/by/4.0/
Open Access
Attribution 4.0 International
Multidisciplinary Digital Publishing Institute (MDPI)
oai:upcommons.upc.edu:2117/1308352022-05-17T10:32:45Zcom_2117_79680com_2117_28579com_2117_28577com_2117_79679com_2117_79723com_2117_28581com_2117_3837com_2117_15797col_2117_79868col_2117_79694col_2117_79768col_2117_3838col_2117_3055openAccess
Distributed optical fibre sensors in concrete structures: performance of bonding adhesives and influence of spatial resolution
Barrias, Antonio Jose de Sousa
Casas Rius, Joan Ramon
Villalba Herrero, Sergi
Universitat Politècnica de Catalunya. Departament d'Enginyeria Civil i Ambiental
Universitat Politècnica de Catalunya. Departament d'Enginyeria de Projectes i de la Construcció
Universitat Politècnica de Catalunya. EC - Enginyeria de la Construcció
Universitat Politècnica de Catalunya. GRIC - Grup de Recerca i Innovació de la Construcció
Àrees temàtiques de la UPC::Enginyeria civil::Materials i estructures::Materials i estructures de formigó
This is the accepted version of the following article: [Barrias, A, Casas, JR, Villalba, S. Distributed optical fibre sensors in concrete structures: Performance of bonding adhesives and influence of spatial resolution. Struct Control Health Monit. 2019; 26:e2310. https://doi.org/10.1002/stc.2310], which has been published in final form at https://onlinelibrary.wiley.com/doi/abs/10.1002/stc.2310
In this paper, the authors conducted an experiment where a reinforced concrete beam was instrumented with a 5-m long polyimide single distributed optical fibre sensors (DOFS) performing four equal segments externally bonded to the bottom surface of the element, using for each segment a different type of adhesive. Three strain gauges were also used for comparison purposes. This beam was then loaded, producing expected equal levels of strain in each of the fibre segments for a more direct comparison of the different adhesives performance. The effect of alternating the spatial resolution is also analysed. In this exercise, additionally to the comparison with the other instrumented sensors, it is also important the consideration and analysis of the associated spectral shift quality (SSQ) values of the DOFS measurements.
2019-03-25T23:36:33Z
2019-12-22T01:27:18Z
2019-03
Article
Barrias, A.; Casas, J.; Villalba, S. Distributed optical fibre sensors in concrete structures: performance of bonding adhesives and influence of spatial resolution. "Structural control and health monitoring", Març 2019, vol. 26, núm. 3, p. 1-16.
1545-2263
https://www.researchgate.net/publication/329858467_Distributed_optical_fibre_sensors_in_concrete_structures_Performance_of_bonding_adhesives_and_influence_of_spatial_resolution
http://hdl.handle.net/2117/130835
10.1002/stc.2310
eng
https://onlinelibrary.wiley.com/doi/abs/10.1002/stc.2310
info:eu-repo/grantAgreement/EC/H2020/642453/EU/Training in Reducing Uncertainty in Structural Safety/TRUSS
info:eu-repo/grantAgreement/EC/H2020/642453/EU/Training in Reducing Uncertainty in Structural Safety/TRUSS
Open Access
Wiley
oai:upcommons.upc.edu:2117/3351362022-10-09T01:17:59Zcom_2117_79680com_2117_28579com_2117_28577com_2117_184547com_2117_184544com_2117_3995com_2117_3251com_2117_28581com_2117_99671com_2117_15797col_2117_79868col_2117_184729col_2117_3996col_2117_3252col_2117_99679col_2117_3055openAccess
Dynamic response of Pelton runners: Numerical and experimental analysis in prototypes
Egusquiza Montagut, Mònica
Valentín Ruiz, David
Presas Batlló, Alexandre
Egusquiza Estévez, Eduard
Universitat Politècnica de Catalunya. Doctorat en Enginyeria Mecànica, Fluids i Aeronàutica
Universitat Politècnica de Catalunya. Departament de Mecànica de Fluids
Universitat Politècnica de Catalunya. Departament d'Enginyeria de Projectes i de la Construcció
Universitat Politècnica de Catalunya. CDIF - Centre de Diagnòstic Industrial i Fluidodinàmica
Universitat Politècnica de Catalunya. FLUIDS - Enginyeria de Fluids
Àrees temàtiques de la UPC::Enginyeria mecànica
Àrees temàtiques de la UPC::Energies
Àrees temàtiques de la UPC::Energies::Energia hidràulica
Worldwide electricity generation is featured by the growth of intermittent renewable energies. In this context, hydropower plays a fundamental role because it provides flexibility to the power grid and ensures its stability. The new grid requirements have led hydropower units to working under a wider range of loads and with more start/stop sequences. Pelton turbines are the most suitable for high heads and have a large regulation capacity. In operation, the runner is impinged by high-speed water jets, and, thus, subjected to strong pulsating forces. As a consequence, the structure presents large deformations and high stresses, especially on the buckets. This situation can be much aggravated if the frequency and shape of the excitation is resonant with those of the structure. Therefore, the modal response of the turbine must be thoroughly studied and the most dangerous frequencies avoided. In this paper, a detailed analysis of the modal behavior of Pelton turbines is presented. Four prototypes have been studied for such purpose. The first one has been modeled numerically and analyzed experimentally. Following a systematic investigation, the effect on the modal shapes and the frequencies of the different parts comprising the turbine has been evaluated. The single bucket and the whole runner have been studied. Finally, another turbine installed in the same power plant has been analyzed to determine the effect of the mechanical design on the frequencies. In addition, two prototypes belonging to other power plants have been studied to see the effects of the hydrodynamic design on the modal behavior.
2021-01-12T08:44:28Z
2022-09-01T00:27:15Z
2020-09-01
Article
Egusquiza, M. [et al.]. Dynamic response of Pelton runners: Numerical and experimental analysis in prototypes. "Renewable energy", 1 Setembre 2020, vol. 157, p. 116.
1879-0682
http://hdl.handle.net/2117/335136
10.1016/j.renene.2020.04.110
eng
https://www.sciencedirect.com/science/article/abs/pii/S096014812030642X
http://creativecommons.org/licenses/by-nc-nd/3.0/es/
Open Access
Attribution-NonCommercial-NoDerivs 3.0 Spain
Elsevier
oai:upcommons.upc.edu:2117/3556882023-11-01T01:26:22Zcom_2117_79680com_2117_28579com_2117_28577com_2117_98851com_2117_28581com_2117_15797col_2117_79868col_2117_103655col_2117_3055openAccess
System modelling of very low Earth orbit satellites for Earth observation
Crisp, Nicholas H.
Roberts, Peter C.E
Romano, Francesco
García-Almiñana, Daniel
Universitat Politècnica de Catalunya. Departament d'Enginyeria de Projectes i de la Construcció
Universitat Politècnica de Catalunya. TUAREG - Turbulence and Aerodynamics in Mechanical and Aerospace Engineering Research Group
Àrees temàtiques de la UPC::Enginyeria de la telecomunicació::Radiocomunicació i exploració electromagnètica::Satèl·lits i ràdioenllaços
Àrees temàtiques de la UPC::Aeronàutica i espai
The operation of satellites in very low Earth orbit (VLEO) has been linked to a variety of benefits to both the spacecraft platform and mission design. Critically, for Earth observation (EO) missions a reduction in altitude can enable smaller and less powerful payloads to achieve the same performance as larger instruments or sensors at higher altitude, with significant benefits to the spacecraft design. As a result, renewed interest in the exploitation of these orbits has spurred the development of new technologies that have the potential to enable sustainable operations in this lower altitude range. In this paper, system models are developed for (i) novel materials that improve aerodynamic performance enabling reduced drag or increased lift production and resistance to atomic oxygen erosion and (ii) atmosphere-breathing electric propulsion (ABEP) for sustained drag compensation or mitigation in VLEO. Attitude and orbit control methods that can take advantage of the aerodynamic forces and torques in VLEO are also discussed. These system models are integrated into a framework for concept-level satellite design and this approach is used to explore the system-level trade-offs for future EO spacecraft enabled by these new technologies. A case-study presented for an optical very-high resolution spacecraft demonstrates the significant potential of reducing orbital altitude using these technologies and indicates possible savings of up to 75% in system mass and over 50% in development and manufacturing costs in comparison to current state-of-the-art missions. For a synthetic aperture radar (SAR) satellite, the reduction in mass and cost with altitude were shown to be smaller, though it was noted that currently available cost models do not capture recent commercial advancements in this segment. These results account for the additional propulsive and power requirements needed to sustain operations in VLEO and indicate that future EO missions could benefit significantly by operating in this altitude range. Furthermore, it is shown that only modest advancements in technologies already under development may begin to enable exploitation of this lower altitude range. In addition to the upstream benefits of reduced capital expense and a faster return on investment, lower costs and increased access to high quality observational data may also be passed to the downstream EO industry, with impact across a wide range of commercial, societal, and environmental application areas.
2021-11-05T09:05:41Z
2023-11-01T01:26:22Z
2021-10
Article
Crisp, N. [et al.]. System modelling of very low Earth orbit satellites for Earth observation. "Acta astronautica", Octubre 2021, vol. 187, p. 475-491.
0094-5765
https://arxiv.org/abs/2108.01945
http://hdl.handle.net/2117/355688
10.1016/j.actaastro.2021.07.004
eng
https://www.sciencedirect.com/science/article/pii/S0094576521003519
info:eu-repo/grantAgreement/EC/H2020/737183/EU/DISCOVERER – DISruptive teChnOlogies for VERy low Earth oRbit platforms/DISCOVERER
http://creativecommons.org/licenses/by-nc-nd/4.0/es/
Open Access
Attribution-NonCommercial-NoDerivs 4.0
oai:upcommons.upc.edu:2117/1261362020-07-23T20:32:44Zcom_2117_79680com_2117_28579com_2117_28577com_2117_3233com_2117_28581com_2117_15797col_2117_79868col_2117_3234col_2117_3055openAccess
Second life batteries lifespan: Rest of useful life and environmental analysis
Canals Casals, Lluc
Amante García, Beatriz
Canal, Camille
Universitat Politècnica de Catalunya. Departament d'Enginyeria de Projectes i de la Construcció
Universitat Politècnica de Catalunya. ENMA - Enginyeria del Medi Ambient
Àrees temàtiques de la UPC::Energies::Energia elèctrica
Road transportation is heading towards electri fi cation using Li-ion batteries to power electric vehicles o ff ering eight or ten years' warrant. After that, batteries are considered inappropriate for traction services but they still have 80% of its original capacity. On the other hand, energy storage devices will have an important role in the electricity market. Being Li-ion batteries still too expensive to provide such services with economic pro fi t, the idea to reuse a ff ordable electric vehicle batteries for a 2nd life originated the Sunbatt project, connecting the automotive and electricity sectors. The battery reuse is, by itself, a path towards sustainability, but the clean- liness of energy storage also depends on the electricity generation power sources and the battery ageing or lifespan. This paper analyses the rest of useful life of 2nd life batteries on four di ff erent stationary applications, which are: Support to fast electric vehicle charges, self-consumption, area regulation and transmission deferral. To do so, it takes advantage of an equivalent electric battery-ageing model that simulates the battery capacity fade through its use. This model runs on Matlab and includes several ageing mechanisms, such as calendar ageing, C-rate, Depth-of-Discharge, temperature and voltage. Results show that 2nd life battery lifespan clearly depends on its use, going from about 30 years in fast electric vehicle charge support applications to around 6 years in area regulation grid services. Additionally, this study analyses the day-to-day emissions from electricity generation in Spain, and states that grid oriented energy storage applications will hardly o ff er environmental bene fi ts in the nearby future. On the other hand, applications that go by the hand of renewable power sources, such as self-consumption applications, are much more appropriate
2018-12-21T18:05:10Z
2018-12-21T18:05:10Z
2019-02-15
Article
Canals, L., Amante, B., Canal , C. Second life batteries lifespan: Rest of useful life and environmental analysis. "Journal of environmental management", 15 Febrer 2019, vol. 232, p. 354-363.
0301-4797
http://hdl.handle.net/2117/126136
10.1016/j.jenvman.2018.11.046
eng
https://www.sciencedirect.com/science/article/pii/S0301479718313124
https://creativecommons.org/licenses/by-nc-nd/4.0/deed.es
Open Access
Attribution-NonCommercial-NoDerivs 4.0 Spain
oai:upcommons.upc.edu:2117/3360392022-09-16T09:07:29Zcom_2117_79680com_2117_28579com_2117_28577com_2117_15797col_2117_79868col_2117_3055openAccess
Effects of the pre-processing algorithms in fault diagnosis of wind turbines
Marti Puig, Pere
Blanco Martínez, Alejandro
Cárdenas Araújo, Juan José
Cusidó Roura, Jordi
Sole Casals, Jordi
Universitat Politècnica de Catalunya. Departament d'Enginyeria de Projectes i de la Construcció
Àrees temàtiques de la UPC::Energies::Energia eòlica::Aerogeneradors
Àrees temàtiques de la UPC::Informàtica::Intel·ligència artificial
The wind sectors pends roughly 2200M€ in repair the wind turbines failures. These failures do not contribute to the goal of reducing greenhouse gases emissions. The 25–35% of the generation costs are operation and maintenance services. To reduce this amount, the wind turbine industry is backing on the Machine Learning techniques over SCADA data. This data can contain errors produced by missing entries, uncalibrated sensors or human errors. Each kind of error must be handled carefully because extreme values are not always produced by data reading errors or noise. This document evaluates the impact of removing extreme values (outliers) applying several widely used techniques like Quantile, Hampel and ESD with the recommended cut-off values. Experimental results on real data show that removing outliers systematically is not a good practice. The use of manually defined ranges (static and dynamic) could be a better filtering strategy.
2021-01-26T15:15:45Z
2021-01-26T15:15:45Z
2018-12
Article
Marti, P. [et al.]. Effects of the pre-processing algorithms in fault diagnosis of wind turbines. "Environmental modelling & software", Desembre 2018, vol. 110, p. 119-128.
1364-8152
http://hdl.handle.net/2117/336039
10.1016/j.envsoft.2018.05.002
eng
https://www.sciencedirect.com/science/article/abs/pii/S1364815217302104
http://creativecommons.org/licenses/by-nc-nd/4.0/
Open Access
Attribution-NonCommercial-NoDerivs 4.0
Elsevier
oai:upcommons.upc.edu:2117/1666542024-01-28T02:22:21Zcom_2117_79680com_2117_28579com_2117_28577com_2117_3307com_2117_28581com_2117_15797col_2117_79868col_2117_3308col_2117_3055openAccess
Testing the effects of gentle vibrotactile stimulation on symptom relief in fibromyalgia
Pujol, Jesús
Ramos López, Daniel
Blanco Hinojo, Laura
Pujol, Guillem
Ortiz Valencia, Héctor
Martínez Vilavela, Gerard
Blanch Rubió, Josep
Monfort Faure, Jordi
Deus Yela, Joan
Universitat Politècnica de Catalunya. Departament d'Enginyeria de Projectes i de la Construcció
Universitat Politècnica de Catalunya. GIIP - Grup de Recerca en Enginyeria de Projectes: Disseny i Sostenibilitat
Àrees temàtiques de la UPC::Ciències de la salut
Sensory disturbances in fibromyalgia extend beyond nociception. It has been proposed that imbalance in the mutual competition between painful input and non-painful sensory activity may, to a significant extent, account for the augmented subjective perception of pain. In this context, non-nociceptive somatosensory stimulation could arguably attenuate fibromyalgia symptoms by restoring the sensory balance. We specifically tested the effect of vibrotactile stimulation on symptom relief in fibromyalgia patients with a randomized, double-blind, sham-controlled, crossover clinical trial. Methods Seventy-seven female patients were randomized and data from 63 valid cases were analyzed. Active intervention involved extensive body stimulation with gentle mechanical vibrations administered during 3¿h at night for 3¿weeks, and the placebo effect was controlled using identical instruments to simulate an alternative treatment option. The primary outcome measure combined pain, fatigue, and complaints of poor cognition. Results Vibrotactile stimulation was significantly superior to sham in alleviating fibromyalgia symptoms globally. However, univariate analyses showed that the effect was not universal. Benefits were perceived on unpleasant somatic sensations such as generalized pain and fatigue, but not on poor cognition, anxiety, and depression. Vibrotactile stimulation was notably well tolerated and sleep quality significantly improved despite the fact that vibrations were administered at night. Conclusions Results thus provide new evidence that non-nociceptive somatosensory stimulation may favorably act upon altered somatosensory balance in fibromyalgia. From a clinical perspective, both the degree of improvement and the easy application of our proposal would seem to support a potential role for vibrotactile stimulation in the symptomatic treatment of fibromyalgia.
2019-07-24T07:42:27Z
2019-07-24T07:42:27Z
2019-06-14
Article
Pujol, J. [et al.]. Testing the effects of gentle vibrotactile stimulation on symptom relief in fibromyalgia. "Arthritis research and therapy", 14 Juny 2019, vol. 21, p. 148-1-148-11.
1478-6362
http://hdl.handle.net/2117/166654
10.1186/s13075-019-1932-9
eng
https://arthritis-research.biomedcentral.com/articles/10.1186/s13075-019-1932-9
http://creativecommons.org/licenses/by-nc-nd/3.0/es/
Open Access
Attribution-NonCommercial-NoDerivs 3.0 Spain
oai:upcommons.upc.edu:2117/3452262021-05-06T10:10:57Zcom_2117_79680com_2117_28579com_2117_28577com_2117_3995com_2117_3837com_2117_28581com_2117_99671com_2117_15797col_2117_79868col_2117_3996col_2117_3838col_2117_99679col_2117_3055openAccess
Sustainable and low-cost solutions for thermal and acoustic refurbishment of old buildings
Neri, Manuela
Levi, Elisa
Piana, Edoardo Alessio
Pujadas Álvarez, Pablo
Cuerva Contreras, Eva
Guardo Zabaleta, Alfredo de Jesús
Pilotelli, Mariagrazia
Universitat Politècnica de Catalunya. Departament d'Enginyeria de Projectes i de la Construcció
Universitat Politècnica de Catalunya. Departament de Mecànica de Fluids
Universitat Politècnica de Catalunya. GRIC - Grup de Recerca i Innovació de la Construcció
Universitat Politècnica de Catalunya. CDIF - Centre de Diagnòstic Industrial i Fluidodinàmica
Àrees temàtiques de la UPC::Desenvolupament humà i sostenible
This paper investigates the possibility to realize solutions for buildings thermal and acoustic refurbishment by using end-of-life household materials, such as cardboard, clothes, and egg-boxes. These solutions can be installed to improve the indoor quality in neighborhoods populated by people below the poverty threshold. The considered end-of-life household materials and their combination have been analyzed from the acoustic and thermal points of view. First of all, the sound insulation and the sound absorption properties have been determined by means of an impedance tube. Then, the summer and the winter thermal performances, when coupled to different wall systems, have been investigated analitically. The results suggest that good thermal and acoustic characteristics can be achieved in a contained thickness by coupling end-of-life household materials.
2021-05-06T10:04:25Z
2021-05-06T10:04:25Z
2021-04-01
Article
Neri, M. [et al.]. Sustainable and low-cost solutions for thermal and acoustic refurbishment of old buildings. "Journal of physics: conference series", 1 Abril 2021, vol. 1868, núm. 1, p. 012027/1-012027/9.
1742-6588
http://hdl.handle.net/2117/345226
10.1088/1742-6596/1868/1/012027
eng
https://iopscience.iop.org/article/10.1088/1742-6596/1868/1/012027
http://creativecommons.org/licenses/by-nc-nd/3.0/es/
Open Access
Attribution-NonCommercial-NoDerivs 3.0 Spain
Institute of Physics (IOP)
oai:upcommons.upc.edu:2117/1765762022-05-17T10:36:15Zcom_2117_79680com_2117_28579com_2117_28577com_2117_184550com_2117_184544com_2117_3233com_2117_28581com_2117_3837com_2117_15797col_2117_79868col_2117_184598col_2117_3234col_2117_3838col_2117_3055openAccess
Sustainable business model archetypes for the electric vehicle battery second use industry: towards a conceptual framework
Reinhardt, Robert
Christodoulou, Ioannis
Amante García, Beatriz
Gassó Domingo, Santiago
Universitat Politècnica de Catalunya. Doctorat en Enginyeria Ambiental
Universitat Politècnica de Catalunya. Departament d'Enginyeria de Projectes i de la Construcció
Universitat Politècnica de Catalunya. ENMA - Enginyeria del Medi Ambient
Universitat Politècnica de Catalunya. GRIC - Grup de Recerca i Innovació de la Construcció
Àrees temàtiques de la UPC::Enginyeria mecànica::Motors::Motors elèctrics
Àrees temàtiques de la UPC::Desenvolupament humà i sostenible::Desenvolupament sostenible::Mobilitat sostenible
This paper explores sustainable business models (SBMs) evolution for the rapidly developing battery second use (B2U) market within the emerging electric vehicle (EV) industry. Previous work identified that SBMs and EV B2U are emerging as major research streams but there is paucity among literature to deliver an overarching framework or a holistic view between these fields and highlight fresh areas for future research. We adopted an inductive multiple-case study approach to unearth new knowledge by comprehending how B2U stakeholders undertake their sustainability-related business activities. These are not only focused on economic profitability but more importantly address wider social and environmental stakeholder value as part of prospective SBMs. The SBM archetypes were adopted as the major lens for our data analysis to study multiple cases of B2U stakeholder roles and comprehend further the scope and ultimate purpose of their operations. Major results indicate that the SBM archetypes as major sustainable innovation strategies have the potential to create a new conception of business models for sustainability in the EV B2U market. In turn, this creates and drives shared sustainable value for multiple stakeholders through cross-sectoral collaborations as part of an entire new and more SBMs. Finally, this study proposes the conceptual sustainable innovation business model (SIBM) framework for the EV B2U industry that includes such shared sustainable value creations which in turn drives forward business performance and sustainability at the same time, eventually creating the business case for sustainability within the EV industry.
2020-02-04T08:13:31Z
2022-01-06T01:26:55Z
2020-05
Article
Reinhardt, R. [et al.]. Sustainable business model archetypes for the electric vehicle battery second use industry: towards a conceptual framework. "Journal of cleaner production", Maig 2020, vol. 254, p. 119994:1-119994:10.
0959-6526
http://hdl.handle.net/2117/176576
10.1016/j.jclepro.2020.119994
eng
https://www.sciencedirect.com/science/article/pii/S095965262030041X
info:eu-repo/grantAgreement/MINECO//TEC2015-63899-C3-1-R/ES/ANALISIS DEL CICLO DE VIDA, DE NEGOCIOS Y DE LA ENTROPIA EN BATERIAS - SUBPROYECTO 1/
COMRD
https://creativecommons.org/licenses/by-nc-nd/4.0/
Open Access
© 2019. Elsevier
Attribution-NonCommercial-NoDerivatives 4.0 International
oai:upcommons.upc.edu:2117/3756102022-11-06T20:35:49Zcom_2117_79680com_2117_28579com_2117_28577com_2117_184550com_2117_184544com_2117_77490com_2117_28578com_2117_15797col_2117_79868col_2117_184598col_2117_77492col_2117_3055openAccess
Electric vehicle battery health expected at end of life in the upcoming years based on UK data
Canals Casals, Lluc
Etxandi Santolaya, Maite
Bibiloni Mulet, Pere Antoni
Corchero García, Cristina
Trilla Romero, Lluís
Universitat Politècnica de Catalunya. Departament d'Enginyeria de Projectes i de la Construcció
Universitat Politècnica de Catalunya. Doctorat en Enginyeria Ambiental
Institut de Recerca en Energía de Catalunya
Àrees temàtiques de la UPC::Energies
Second-life businesses from Electric Vehicle (EV) batteries are gaining attention considering that these batteries are deemed as inappropriate for transport purposes once they reach 80 or 70% of State of Health (SoH). However, the limited number of retired batteries and the trend in battery capacity increase hinder a realistic evaluation of second-life applications. To analyze battery reuse, a closer look at the End of Life (EoL) conditions of these batteries must be taken. This study presents a battery ageing model to estimate the SoH of EV batteries according to their age and mileage. The model is applied to the current retirement characteristics of combustion vehicles to statistically determine the expected SoH at the vehicle EoL. Results indicate that most EVs will reach EoL for reasons other than under-performance. Once retired, most EV batteries will have a SoH higher than 75% within the next 20 years, opening an interesting market for second-life businesses. However, battery reuse is an option that, considering the growing EV market, will rapidly saturate the stationary energy storage demand. Before 2040, most EV batteries will follow streams towards the circular economy, although at some point, they will have to be sent directly to recycling after the vehicular use.
2022-11-04T09:50:05Z
2022-11-04T09:50:05Z
2022-10-07
Article
Canals Casals, L. [et al.]. Electric vehicle battery health expected at end of life in the upcoming years based on UK data. "Batteries", 7 Octubre 2022, vol. 8, núm. 10, article 164, p. 1-17.
2313-0105
http://hdl.handle.net/2117/375610
10.3390/batteries8100164
eng
https://www.mdpi.com/2313-0105/8/10/164/htm
http://creativecommons.org/licenses/by/4.0/
Open Access
Attribution 4.0 International
Multidisciplinary Digital Publishing Institute (MDPI)
oai:upcommons.upc.edu:2117/3357372021-03-11T06:06:05Zcom_2117_79680com_2117_28579com_2117_28577com_2117_3307com_2117_28581com_2117_15797col_2117_79868col_2117_3308col_2117_3055openAccess
Characterization of ultrafine particles generated in charcoal street grills in the city of Armenia (Colombia). Case study
Gómez, Milena E.
Villamizar Vargas, Rafael Humberto
Cremades Oliver, Lázaro Vicente
Universitat Politècnica de Catalunya. Departament d'Enginyeria de Projectes i de la Construcció
Universitat Politècnica de Catalunya. GIIP - Grup de Recerca en Enginyeria de Projectes: Disseny i Sostenibilitat
Àrees temàtiques de la UPC::Enginyeria química
In Colombia, it is very common to find informal street grills selling charcoal-roasted foods such as “arepas” (corn tortillas), meats, bananas, corn, etc. This informal economy represents the livelihood of many families. In these stalls, workers are exposed for 5 to 9 hours a day to particulate matter emitted from their grills. This paper presents a characterization of ultrafine particles from some charcoal street grills in the city of Armenia (Colombia), in order to determine whether their workers are at risk to their health. A total of two different samples were taken in two street charcoals grills. Particle distribution and elemental chemical analysis was determined by SEM and EDS. Results show the presence of ultrafine particles in both samples.
2021-01-21T13:11:35Z
2021-01-21T13:11:35Z
2020-10-15
Article
Gómez, M.; Villamizar, R.; Cremades, L.V. Characterization of ultrafine particles generated in charcoal street grills in the city of Armenia (Colombia). Case study. "U.D.C.A Actualidad & Divulgación Científica", 15 Octubre 2020, vol. 23, núm. 2, p. e1555/1-e1555/5.
0123-4226
http://hdl.handle.net/2117/335737
10.31910/rudca.v23.n2.2020.1555
eng
https://revistas.udca.edu.co/index.php/ruadc/article/view/1555/2087
http://creativecommons.org/licenses/by-nc-nd/4.0/
Open Access
Attribution-NonCommercial-NoDerivates 4.0 International
Universidad de Ciencias Aplicadas Y Ambientales - UDCA
oai:upcommons.upc.edu:2117/3335272023-03-21T15:33:12Zcom_2117_79680com_2117_28579com_2117_28577com_2117_15797col_2117_79868col_2117_3055openAccess
Development of a Mobile Application for People with Obesity
Álvarez-Moya, Eva M.
Mirallas, Judit
Fontanals Padrós, Clara
Quintana Aparicio, Maria
Cusidó Roura, Jordi
Rimbau Almendros, Jordi
Garolera, Maite
Universitat Politècnica de Catalunya. Departament d'Enginyeria de Projectes i de la Construcció
Àrees temàtiques de la UPC::Informàtica::Aplicacions de la informàtica
2020-11-30T14:01:10Z
2021-08-01T00:29:25Z
2021-01-01
Article
Alvarez-Moya, E. [et al.]. Development of a Mobile Application for People with Obesity. "Journal of nutrition education and behavior", Gener 2021, vol. 53, núm. 1. p. 79-83.
1499-4046
http://hdl.handle.net/2117/333527
10.1016/j.jneb.2020.07.004
eng
https://www.jneb.org/article/S1499-4046(20)30515-7/fulltext
https://creativecommons.org/licenses/by-nc-nd/4.0/
Open Access
Attribution-NonCommercial-NoDerivs 4.0
oai:upcommons.upc.edu:2117/1908322022-02-28T01:27:03Zcom_2117_79680com_2117_28579com_2117_28577com_2117_184550com_2117_184544com_2117_3233com_2117_28581com_2117_15797col_2117_79868col_2117_184598col_2117_3234col_2117_3055openAccess
Economic analysis of the disassembling activities to the reuse of electric vehicles Li-ion batteries
Rallo, Héctor
Benveniste Pérez, Gabriela
Gestoso, I.
Amante García, Beatriz
Universitat Politècnica de Catalunya. Doctorat en Enginyeria Ambiental
Universitat Politècnica de Catalunya. Departament d'Enginyeria de Projectes i de la Construcció
Universitat Politècnica de Catalunya. ENMA - Enginyeria del Medi Ambient
Àrees temàtiques de la UPC::Enginyeria elèctrica::Maquinària i aparells elèctrics
Electric vehicles (EVs) are massively entering the mobility services. However, the high costs of their batteries,
and thus of the vehicles, represent a real barrier that refrain consumers from buying EVs. In order to reduce the
EV costs, research on recovery battery to be reused in a second life for stationary use is being explored, as it this
is expected to decrease the cost of these batteries (second life) is being considered for additional stationary uses.
For this purpose, specific conditioning (disassembling and repurposing) activities on the battery need to be
undertaken to enable a further use of Li-ion batteries once they have completed their duty life in a vehicle (first
life). Since economy matters, the economic aspects of these activities need to be analysed to fully understand the
economic feasibility of the second life as a key element to that will determine the success of the implementation
of EVs. This paper investigates the current state of art of the disassembling activities by analysing the Smart
ForFour Li-ion battery and provides insights of the costs of each disassembling operation, from battery level to
cell level. Another key aspect will be the remanufacturing at battery level as it presents some advantages over
either module or cell level such as a less time is required and consequently a fewer cost. On the other hand, the
reuse at module level presents interesting advantages such as the chance to design more versatile and scalable
solutions, which could be more interesting despite their initial drawbacks for many second life applications.
Therefore, the disassembling costs will play an important role in the repurposed battery selling prices.
2020-06-16T10:19:25Z
2022-02-28T01:27:03Z
2020-02-19
Article
Rallo, H. [et al.]. Economic analysis of the disassembling activities to the reuse of electric vehicles Li-ion batteries. "Resources, conservation and recycling", 19 Febrer 2020, vol. 159, p. 104785:1-104785:11.
0921-3449
http://hdl.handle.net/2117/190832
10.1016/j.resconrec.2020.104785
eng
https://doi.org/10.1016/j.resconrec.2020.104785
http://creativecommons.org/licenses/by-nc-nd/3.0/es/
Open Access
Attribution-NonCommercial-NoDerivs 3.0 Spain
oai:upcommons.upc.edu:2117/4046732024-03-18T01:54:43Zcom_2117_79680com_2117_28579com_2117_28577com_2117_15797col_2117_79868col_2117_3055openAccess
Wind turbine database for intelligent operation and maintenance strategies
Marti-Puig, Pere
Blanco Martínez, Alejandro
Cusidó Roura, Jordi
Sole Casals, Jordi
Universitat Politècnica de Catalunya. Departament d'Enginyeria de Projectes i de la Construcció
Àrees temàtiques de la UPC::Energies::Energia eòlica::Aerogeneradors
Àrees temàtiques de la UPC::Informàtica::Automàtica i control
With the aim of helping researchers to develop intelligent operation and maintenance strategies, in this manuscript, an extensive 3-years Supervisory Control and Data Acquisition database of five Fuhrländer FL2500 2.5¿MW wind turbines is presented. The database contains 312 analogous variables recorded at 5-minute intervals, from 78 different sensors. The reported values for each sensor are minimum, maximum, mean, and standard deviation. The database also contains the alarm events, indicating the system and subsystem and a small description. Finally, a set of functions to download specific subsets of the whole database is freely available in Matlab, R, and Python. To demonstrate the usefulness of this database, an illustrative example is given. In this example, different gearbox variables are selected to estimate a target variable to detect whether or not the estimate differs from the actual value provided for the sensor. By using this normality modelling approach, it is possible to detect rotor malfunction when the estimate differs from the actual measured value.
2024-03-15T08:11:05Z
2024-03-15T08:11:05Z
2024-02-29
Article
Marti-Puig, P. [et al.]. Wind turbine database for intelligent operation and maintenance strategies. "Scientific data", 29 Febrer 2024, vol. 11, núm. article 255.
2052-4463
http://hdl.handle.net/2117/404673
10.1038/s41597-024-03067-9
eng
https://www.nature.com/articles/s41597-024-03067-9
info:eu-repo/grantAgreement/AEI/Plan Estatal de Investigación Científica y Técnica y de Innovación 2017-2020/PID2020-120314RB-I00/ES/PROCESAMIENTO AVANZADO DE SEÑALES PARA LA PROGNOSIS DE FALLOS EN AEROGENERADORES /
http://creativecommons.org/licenses/by/4.0/
Open Access
Attribution 4.0 International
Nature
oai:upcommons.upc.edu:2117/1048032022-05-17T10:37:23Zcom_2117_79680com_2117_28579com_2117_28577com_2117_79758com_2117_28581com_2117_15797col_2117_79868col_2117_79795col_2117_3055openAccess
Trends and patterns of air quality in Santa Cruz de Tenerife (Canary Islands) in the period 2011–2015
Baldasano Recio, José María
Massagué Obradors, Jordi
Universitat Politècnica de Catalunya. Departament d'Enginyeria de Projectes i de la Construcció
Universitat Politècnica de Catalunya. GReCT - Grup de Recerca de Ciències de la Terra
Àrees temàtiques de la UPC::Enginyeria química::Impacte ambiental
Air quality trends and patterns in the coastal city of Santa Cruz de Tenerife (Canary Islands, Spain) for the period 2011–2015 were analyzed. The orographic and meteorological characteristics, the proximity to the African continent, and the influence of the Azores anticyclone in combination with the anthropogenic (oil refinery, road/maritime traffic) and natural emissions create specific dispersion conditions. SO2, NO2, PM10, PM2.5, and O3 pollutants were assessed. The refinery was the primary source of SO2; EU hourly and daily average limit values were exceeded during 2011 and alert thresholds were reached in 2011 and 2012. WHO daily mean guideline was occasionally exceeded. Annual averages in the three stations that registered the highest concentrations in 2011 and 2012 were between 9.3 and 20.4 µg/m3. The spatial analysis of SO2 concentrations with respect to prevailing winds corroborates a clear influence of the refinery to the SO2 levels. In 2014 and 2015, the refinery did not operate and the concentrations fell abruptly to background levels of 2.5–7.1 µg/m3 far below from WHO AQG. NO2 EU limit values, as well as WHO AQG for the period 2011–2015, were not exceeded. The progressive dieselization of the vehicle fleet caused an increment on NO2 annual mean concentrations (from 2011 to 2015) measured at two stations close to busy roads 25 to 31 µg/m3 (+21%) and 27 to 35 µg/m3 (+29%). NOx daily and weekly cycles (working days and weekends) were characterized. An anti-correlation was found between NOx and O3, showing that O3 is titrated by locally emitted NO. Higher O3 concentrations were reported because less NOx emitted during the weekends showing a clear weekend effect. Saharan dust intrusions have a significant impact on PM levels. After subtracting natural sources contribution, none of the stations reached the EU maximum 35 yearly exceedances of daily means despite seldom exceedances at some stations. None of the stations exceeded the annual mean EU limit values; however, many stations exceeded the annual mean WHO AQG. Observed PM10 annual average concentrations in all the stations fluctuated between 10.1 and 35.3 µg/m3, where background concentrations were 6.5–24.4 µg/m3 and natural contributions: 4.2–9.1 µg/m3. No PM10 temporal trends were identified during the period except for an effect of washout due to the rain: concentrations were lower in 2013 and 2014 (the most rainy years of the period). None of the stations reached the PM2.5 annual mean EU 2015 limit value. However, almost all the stations registered daily mean WHO AQG exceedances. During 2015, PM2.5 concentrations were higher than the previous years (2015, 8.8–12.3 µg/m3; 2011–2014, 3.7–9.6 µg/m3). O3 complied with EU target values; stricter WHO AQG were sometimes exceeded in all the stations for the whole time period
2017-05-24T07:43:53Z
2017-05-24T07:43:53Z
2017-05-17
Article
Baldasano, J., Massague, J. Trends and patterns of air quality in Santa Cruz de Tenerife (Canary Islands) in the period 2011–2015. "Air quality atmosphere and health", 17 Maig 2017.
1873-9318
http://hdl.handle.net/2117/104803
10.1007/s11869-017-0484-x
29142612
eng
http://link.springer.com/article/10.1007/s11869-017-0484-x
info:eu-repo/grantAgreement/MINECO//CGL2013-46736-R/ES/PREDICCION DE AEROSOLES Y EVALUACION DEL FORZAMIENTO RADIATIVO PARA APLICACIONES METEOROLOGICAS Y CLIMATICAS CON EL MODELO ON-LINE NMMB%2FBSC-CTM/
http://creativecommons.org/licenses/by-nc-nd/3.0/es/
Open Access
Attribution-NonCommercial-NoDerivs 3.0 Spain
oai:upcommons.upc.edu:2117/3951542023-11-12T03:16:49Zcom_2117_79680com_2117_28579com_2117_28577com_2117_80518com_2117_23714com_2117_28578com_2117_184550com_2117_184544com_2117_15797col_2117_79868col_2117_80537col_2117_184598col_2117_3055openAccess
Potential of TROPOMI for understanding spatio-temporal variations in surface NO2 and their dependencies upon land use over the Iberian Peninsula
Petetin, Hervé
Guevara Vilardell, Marc
Compernolle, Steve
Bowdalo, Dene
Bretonnière, Pierre-Antoine
Enciso, Santiago
Jorba Casellas, Oriol
López Coronado, Franco Rodrigo
Soret Miravet, Albert
García Pando, Carlos Pérez
Universitat Politècnica de Catalunya. Departament d'Enginyeria de Projectes i de la Construcció
Universitat Politècnica de Catalunya. Doctorat en Enginyeria Ambiental
Barcelona Supercomputing Center
Àrees temàtiques de la UPC::Desenvolupament humà i sostenible::Enginyeria ambiental
In orbit since late 2017, the Tropospheric Monitoring Instrument (TROPOMI) is offering new outstanding opportunities for better understanding the emission and fate of nitrogen dioxide (NO2) pollution in the troposphere. In this study, we provide a comprehensive analysis of the spatio-temporal variability of TROPOMI NO2 tropospheric columns (TrC-NO2) over the Iberian Peninsula during 2018–2021, considering the recently developed Product Algorithm Laboratory (PAL) product. We complement our analysis with estimates of NOx anthropogenic and natural soil emissions. Closely related to cloud cover, the data availability of TROPOMI observations ranges from 30 %–45 % during April and November to 70 %–80 % during summertime, with strong variations between northern and southern Spain. Strongest TrC-NO2 hotspots are located over Madrid and Barcelona, while TrC-NO2 enhancements are also observed along international maritime routes close the strait of Gibraltar, and to a lesser extent along specific major highways. TROPOMI TrC-NO2 appear reasonably well correlated with collocated surface NO2 mixing ratios, with correlations around 0.7–0.8 depending on the averaging time.
We investigate the changes of weekly and monthly variability of TROPOMI TrC-NO2 depending on the urban cover fraction. Weekly profiles show a reduction of TrC-NO2 during the weekend ranging from −10 % to −40 % from least to most urbanized areas, in reasonable agreement with surface NO2. In the largest agglomerations like Madrid or Barcelona, this weekend effect peaks not in the city center but in specific suburban areas/cities, suggesting a larger relative contribution of commuting to total NOx anthropogenic emissions. The TROPOMI TrC-NO2 monthly variability also strongly varies with the level of urbanization, with monthly differences relative to annual mean ranging from −40 % in summer to +60 % in winter in the most urbanized areas, and from −10 % to +20 % in the least urbanized areas. When focusing on agricultural areas, TROPOMI observations depict an enhancement in June–July that could come from natural soil NO emissions. Some specific analysis of surface NO2 observations in Madrid show that the relatively sharp NO2 minimum used to occur in August (drop of road transport during holidays) has now evolved into a much broader minimum partly de-coupled from the observed local road traffic counting; this change started in 2018, thus before the COVID-19 outbreak. Over 2019–2021, a reasonable consistency of the inter-annual variability of NO2 is also found between both datasets.
Our study illustrates the strong potential of TROPOMI TrC-NO2 observations for complementing the existing surface NO2 monitoring stations, especially in the poorly covered rural and maritime areas where NOx can play a key role, notably for the production of tropospheric O3.
2023-10-20T08:33:25Z
2023-10-20T08:33:25Z
2023-04-03
Article
Petetin, H. [et al.]. Potential of TROPOMI for understanding spatio-temporal variations in surface NO2 and their dependencies upon land use over the Iberian Peninsula. "Atmospheric chemistry and physics", 3 Abril 2023, vol. 23, núm. 7, p. 3905-3935.
1680-7324
http://hdl.handle.net/2117/395154
10.5194/acp-23-3905-2023
eng
https://acp.copernicus.org/articles/23/3905/2023/
info:eu-repo/grantAgreement/EC/H2020/871115/EU/Aerosol, Clouds and Trace Gases Research Infrastructure Implementation Project/ACTRIS IMP
http://creativecommons.org/licenses/by/4.0/
Open Access
Attribution 4.0 International
European Geosciences Union (EGU)
oai:upcommons.upc.edu:2117/1019742020-07-23T20:36:55Zcom_2117_79680com_2117_28579com_2117_28577com_2117_3837com_2117_28581com_2117_15797col_2117_79868col_2117_3838col_2117_3055openAccess
Modelling indoor air carbon dioxide concentration using grey-box models
Macarulla Martí, Marcel
Casals Casanova, Miquel
Carnevali, Matteo
Forcada Matheu, Núria
Gangolells Solanellas, Marta
Universitat Politècnica de Catalunya. Departament d'Enginyeria de Projectes i de la Construcció
Universitat Politècnica de Catalunya. GRIC - Grup de Recerca i Innovació de la Construcció
Àrees temàtiques de la UPC::Edificació::Instal·lacions i acondicionament d'edificis::Instal·lacions de ventilació
Predictive control is the strategy that has the greatest reported benefits when it is implemented in a building energy management system. Predictive control requires low-order models to assess different scenarios and determine which strategy should be implemented to achieve a good compromise between comfort, energy consumption and energy cost. Usually, a deterministic approach is used to create low-order models to estimate the indoor CO2 concentration using the differential equation of the tracer-gas mass balance. However, the use of stochastic differential equations based on the tracer-gas mass balance is not common. The objective of this paper is to assess the potential of creating predictive models for a specific room using for the first time a stochastic grey-box modelling approach to estimate future CO2 concentrations. First of all, a set of stochastic differential equations are defined. Then, the model parameters are estimated using a maximum likelihood method. Different models are defined, and tested using a set of statistical methods. The approach used combines physical knowledge and information embedded in the monitored data to identify a suitable parametrization for a simple model that is more accurate than commonly used deterministic approaches. As a consequence, predictive control can be easily implemented in energy management systems.
2017-03-06T15:12:13Z
2019-03-01T01:30:16Z
2017-05
Article
Macarulla, M., Casals, M., Carnevali, M., Forcada, N., Gangolells, M. Modelling indoor air carbon dioxide concentration using grey-box models. "Building and environment", Maig 2017, vol. 117, p. 146-153.
0360-1323
http://hdl.handle.net/2117/101974
10.1016/j.buildenv.2017.02.022
eng
http://www.sciencedirect.com/science/article/pii/S0360132317300823
http://creativecommons.org/licenses/by-nc-nd/3.0/es/
Open Access
oai:upcommons.upc.edu:2117/913922021-05-13T12:09:46Zcom_2117_79680com_2117_28579com_2117_28577com_2117_79758com_2117_28581com_2117_15797col_2117_79868col_2117_79795col_2117_3055openAccess
High-resolution dust modelling over complex terrains in West Asia
Basart Alpuente, Sara
Vendrell Miguel, Lluis
Baldasano Recio, José María
Universitat Politècnica de Catalunya. Departament d'Enginyeria de Projectes i de la Construcció
Universitat Politècnica de Catalunya. GReCT - Grup de Recerca de Ciències de la Terra
Àrees temàtiques de la UPC::Enginyeria agroalimentària::Ciències de la terra i de la vida::Climatologia i meteorologia
Àrees temàtiques de la UPC::Desenvolupament humà i sostenible::Degradació ambiental::Contaminació atmosfèrica
The present work demonstrates the impact of model resolution in dust propagation in a complex terrain region such as West Asia. For this purpose, two simulations using the NMMB/BSC-Dust model are performed and analysed, one with a high horizontal resolution (at 0.03° × 0.03°) and one with a lower horizontal resolution (at 0.33° × 0.33°). Both model experiments cover two intense dust storms that occurred on 17–20 March 2012 as a consequence of strong northwesterly Shamal winds that spanned over thousands of kilometres in West Asia. The comparison with ground-based (surface weather stations and sunphotometers) and satellite aerosol observations (Aqua/MODIS and MSG/SEVIRI) shows that despite differences in the magnitude of the simulated dust concentrations, the model is able to reproduce these two dust outbreaks. Differences between both simulations on the dust spread rise on regional dust transport areas in south-western Saudi Arabia, Yemen and Oman. The complex orography in south-western Saudi Arabia, Yemen and Oman (with peaks higher than 3000 m) has an impact on the transported dust concentration fields over mountain regions. Differences between both model configurations are mainly associated to the channelization of the dust flow through valleys and the differences in the modelled altitude of the mountains that alters the meteorology and blocks the dust fronts limiting the dust transport. These results demonstrate how the dust prediction in the vicinity of complex terrains improves using high-horizontal resolution simulations.
2016-11-02T19:24:11Z
2018-11-20T01:30:50Z
2016-12
Article
Basart, S., Vendrell, L., Baldasano, J. High-resolution dust modelling over complex terrains in West Asia. "Aeolian research", Desembre 2016, vol. 23, p. 37-50.
1875-9637
http://hdl.handle.net/2117/91392
10.1016/j.aeolia.2016.09.005
eng
http://www.sciencedirect.com/science/article/pii/S1875963716301409
http://creativecommons.org/licenses/by-nc-nd/3.0/es/
Open Access
oai:upcommons.upc.edu:2117/4047012024-03-15T10:44:00Zcom_2117_79680com_2117_28579com_2117_28577com_2117_79681com_2117_79679com_2117_79723com_2117_28581com_2117_3837com_2117_15797col_2117_79868col_2117_79693col_2117_79694col_2117_79768col_2117_3838col_2117_3055
Neural network. Game theory coupled approach for predicting flexural performance of fibre-reinforced concrete
López Carreño, Rubén-Daniel
Ikumi Montserrat, Tai
Fuente Antequera, Albert de la
Galeote Moreno, Eduardo
Pujadas Álvarez, Pablo
Universitat Politècnica de Catalunya. Departament d'Enginyeria de Projectes i de la Construcció
Universitat Politècnica de Catalunya. Departament d'Enginyeria Civil i Ambiental
Universitat Politècnica de Catalunya. Departament de Tecnologia de l'Arquitectura
Universitat Politècnica de Catalunya. GRIC - Grup de Recerca i Innovació de la Construcció
Universitat Politècnica de Catalunya. EC - Enginyeria de la Construcció
Àrees temàtiques de la UPC::Edificació::Materials de construcció::Formigó
The addition of fibres to concrete is an effective solution for enhancing its post-cracking tensile strength (fctR). Currently, this property is characterized through high-cost and time-consuming experimental tests since no reliable analytical methods exist to predict this mechanical property. This study provides two neural networks for predicting the fctR obtained from flexural beam tests for crack mouth opening displacements of 0.50 mm (fR1) and 2.50 mm (fR3). Network architectures are obtained with an optimization process that involved training 1568 Multi-Layer Perceptron configurations under Monte Carlo cross-validation over 50 iterations, with a total of 78,400 trainings for each fR,i. The resulting models were evaluated using performance metrics including Coefficient of Determination (R2), Correlation Coefficient (CC), Mean Absolute Error (MAE), Root Mean Square Error (RMSE) and Scatter index (SI). High predictive accuracies were achieved for both fR1 (R2 = 0.87, CC = 0.93, MAE = 0.64 MPa, RMSE = 0.90 MPa, SI = 19.2%) and fR3 (R2 = 0.85, CC = 0.92, MAE = 0.73 MPa, RMSE = 0.95 MPa, SI = 19.8%). Furthermore, the analysis of their global and local interpretability through the game-theory-based SHAP explanation method confirms their consistency with established understandings of fibre-reinforced concrete (FRC) behaviour. Moreover, numerical expressions are proposed as an alternative to traditional testing methods, offering a tool to predict the flexural post-cracking tensile strength for pre-design and quality control purposes of FRC structures. These approaches are deemed essential for advancing FRC technology marking a significant advancement in addressing the design limitations and widespread application challenges associated with the material.
2024-03-15T10:35:43Z
2024-06-01
2026-03-01
Article
Lopez, R. [et al.]. Neural network. Game theory coupled approach for predicting flexural performance of fibre-reinforced concrete. "Journal of building engineering", 1 Juny 2024, vol. 86, núm. article 108909.
2352-7102
http://hdl.handle.net/2117/404701
10.1016/j.jobe.2024.108909
eng
https://www.sciencedirect.com/science/article/abs/pii/S2352710224004777
info:eu-repo/grantAgreement/AEI/Plan Estatal de Investigación Científica y Técnica y de Innovación 2017-2020/PID2019-108978RB-C32/ES/FLUENCIA Y FATIGA EN ELEMENTOS ESTRUCTURALES DE HORMIGON REFORZADO CON FIBRAS/
http://creativecommons.org/licenses/by-nc-nd/4.0/
Restricted access - publisher's policy
Attribution-NonCommercial-NoDerivatives 4.0 International
Elsevier
oai:upcommons.upc.edu:2117/3347422022-10-09T01:49:50Zcom_2117_79680com_2117_28579com_2117_28577com_2117_3837com_2117_28581com_2117_15797col_2117_79868col_2117_3838col_2117_3055openAccess
A dataset to evaluate IEEE 802.15.4g sun for dependable low-power wireless communications in industrial scenarios
Tuset Peiro, Pere
Cuerva Contreras, Eva
Egusquiza Estévez, Eduard
Vilajosana Guillén, Xavier
Universitat Politècnica de Catalunya. Departament d'Enginyeria de Projectes i de la Construcció
Universitat Politècnica de Catalunya. GRIC - Grup de Recerca i Innovació de la Construcció
Àrees temàtiques de la UPC::Informàtica
This article presents a dataset obtained from the deployment of an IEEE 802.15.4g SUN (Smart Utility Network) single-hop network (11 nodes) in a large industrial scenario (110,044 m 2 ) for a long period of time (99 days). The dataset contains ~11 M entries with RSSI (Received Signal Strength Indicator), CCA (Clear Channel Assessment), and PDR (Packet Delivery Ratio) values. The analyzed results show a high variability in the average RSSI (i.e., between -82.1 dBm and -101.7 dBm) and CCA (i.e., between -111.2 dBm and -119.9 dBm) values, which is caused by the effects of multi-path propagation and external interference. Despite being above the sensitivity limit for each modulation, these values result in poor average PDR values (i.e., from 65.9% to 87.4%), indicating that additional schemes are needed to meet the link reliability requirements of industrial applications. Hence, the presented dataset will allow researchers and practitioners to propose novel mechanisms and evaluate their performance using realistic conditions, enabling the dependability vision of the RAW (Reliable and Available Wireless) WG (Working Group) at the IETF (Internet Engineering Task Force).
2020-12-22T07:23:32Z
2020-12-22T07:23:32Z
2020-09-01
Article
Tuset-Peiro, P. [et al.]. A dataset to evaluate IEEE 802.15.4g sun for dependable low-power wireless communications in industrial scenarios. "DATA", 1 Setembre 2020, vol. 5, núm. 3, p. 64-1-64-19.
2306-5729
http://hdl.handle.net/2117/334742
10.3390/data5030064
eng
https://www.mdpi.com/2306-5729/5/3/64
http://creativecommons.org/licenses/by-nc-nd/4.0/
Open Access
Attribution-NonCommercial-NoDerivatives 4.0 International
oai:upcommons.upc.edu:2117/1305612022-05-17T10:40:23Zcom_2117_79680com_2117_28579com_2117_28577com_2117_79679com_2117_79723com_2117_28581com_2117_3837com_2117_15797col_2117_79868col_2117_79694col_2117_79768col_2117_3838col_2117_3055openAccess
SHM of reinforced concrete elements by Rayleigh backscattering DOFS
Barrias, Antonio Jose de Sousa
Casas Rius, Joan Ramon
Villalba Herrero, Sergi
Universitat Politècnica de Catalunya. Departament d'Enginyeria Civil i Ambiental
Universitat Politècnica de Catalunya. Departament d'Enginyeria de Projectes i de la Construcció
Universitat Politècnica de Catalunya. EC - Enginyeria de la Construcció
Universitat Politècnica de Catalunya. GRIC - Grup de Recerca i Innovació de la Construcció
Àrees temàtiques de la UPC::Enginyeria civil::Materials i estructures::Materials i estructures de formigó
Àrees temàtiques de la UPC::Enginyeria de la telecomunicació::Telecomunicació òptica::Fibra òptica
This document showcases the latest research conducted within UPC–BarcelonaTech on the performance of distributed optical fiber sensors (DOFS), more specifically the case of the optical backscattered reflectometry (OBR) system, in the structural health monitoring (SHM) of bridges, and large scale structures. This technology has demonstrated promising results for monitoring applications in a wide range of fields but due to its novelty, still presents several uncertainties which prevent its use in a more systematic and efficient way in civil engineering infrastructures, being this even more evident in the case of concrete structures. Therefore, different laboratory experimental campaigns were devised where multiple aspects of the instrumentation of DOFS technology in civil engineering applications were assessed and scrutinized. Such as the study of new implementation methods, comparison, and performance analysis of different bonding adhesives and spatial resolution. Additionally, the fatigue performance of this sensing typology was also assessed. Furthermore, the use of the OBR system technology was applied in a real world structure in Barcelona, Spain, where new challenging conditions had to be addressed. Consequently, with this work, different conclusions are obtained related to the proficiency and limitations on the use of this particular type of optical sensing system in concrete structures.
2019-03-19T08:12:59Z
2019-03-19T08:12:59Z
2019-03
Article
Barrias, A.; Casas, J.; Villalba, S. SHM of reinforced concrete elements by Rayleigh backscattering DOFS. "Frontiers in built environment", Març 2019, vol. 5, p. 1-14.
2297-3362
http://hdl.handle.net/2117/130561
10.3389/fbuil.2019.00030
eng
https://www.frontiersin.org/articles/10.3389/fbuil.2019.00030/full
info:eu-repo/grantAgreement/EC/H2020/642453/EU/Training in Reducing Uncertainty in Structural Safety/TRUSS
http://creativecommons.org/licenses/by/3.0/es/
Open Access
Attribution 3.0 Spain
oai:upcommons.upc.edu:2117/1172702021-09-05T02:41:28Zcom_2117_79680com_2117_28579com_2117_28577com_2117_3233com_2117_28581com_2117_3977com_2117_15797col_2117_79868col_2117_3234col_2117_3978col_2117_3055openAccess
A review on the present situation of wastewater treatment in textile industry with membrane bioreactor and moving bed biofilm reactor
Yang, Xuefei
Crespi Rosell, Martin
López Grimau, Víctor
Universitat Politècnica de Catalunya. Departament de Ciència dels Materials i Enginyeria Metal·lúrgica
Universitat Politècnica de Catalunya. Departament d'Enginyeria de Projectes i de la Construcció
Universitat Politècnica de Catalunya. ENMA - Enginyeria del Medi Ambient
Àrees temàtiques de la UPC::Enginyeria tèxtil::Impacte ambiental
Membrane bioreactor (MBR) is one of the advanced treatment technologies used in industrial wastewater treatment due to its various advantages over conventional biological processes. Recently, the application of MBR in treatment of textile wastewater has increased significantly with an effective removal of contaminants. Moving bed bioreactor (MBBR) has been efficiently used for the treatment of different municipal and industrial wastewater during the last decades and it is a relatively novel and effective technology applied in textile wastewater treatment. This review paper presents the situation of MBR and MBBR technology for textile wastewater purification under different conditions and collates results of previous studies during the past years about MBR and MBBR treatment technologies used in textile processes. Both of these two technologies have shown their efficiency, but they still have problems in textile wastewater treatment. To this end, MBR-MBBR hybrid system could be an attractive solution for textile wastewater purification because of the high efficiency and low consumption of energy and space
2018-05-16T10:12:28Z
2019-01-29T01:30:32Z
2018-01-29
Article
Yang, X., Crespi, M., Lopez-Grimau, V. A review on the present situation of wastewater treatment in textile industry with membrane bioreactor and moving bed biofilm reactor. "Desalination and water treatment", 29 Gener 2018, vol. 103, p. 315-322.
1944-3994
http://hdl.handle.net/2117/117270
10.5004/dwt.2018.21962
eng
http://www.deswater.com/vol.php?vol=103&oth=103|0|January|2018
Open Access
oai:upcommons.upc.edu:2117/4000702024-01-28T22:14:45Zcom_2117_79680com_2117_28579com_2117_28577com_2117_3837com_2117_28581com_2117_15797col_2117_79868col_2117_3838col_2117_3055openAccess
New infiltration technique in the treatment of the Plantar Fascia Syndrome based on Platelet-Rich Plasma
Pardo-Camps, Francesc
Pardo Bosch, Francesc
Universitat Politècnica de Catalunya. Departament d'Enginyeria de Projectes i de la Construcció
Universitat Politècnica de Catalunya. GRIC - Grup de Recerca i Innovació de la Construcció
Àrees temàtiques de la UPC::Ciències de la salut::Medicina
Pain in the attachment of the plantar fascia in the calcaneus represents 10% of all sports injuries, affects 10% of foot runners, and will affect around 20% of the world population. There is no effective conservative treatment for it. This paper justifies a new definition and name for this pathology, Plantar Fascia Syndrome (PFS), presents a methodology for its diagnosis, and presents the clinical and functional effectiveness of a new conservative treatment based on platelet-rich plasma (PRP). In total, 25 patients (from an initial sample of 260) diagnosed with recalcitrant PFS lasting for more than 12 months were treated with a single infiltration of 2 mL of PRP, according to a new technic proposed. The study was approved by the ethical committee for clinical research of the reference hospital. The patients were controlled after 15, 30, 90, and 180 days, reviewing on each occasion pain, thickness of the plantar fascia, and active extension of the ankle joint. A total of 15 days after infiltration, 85% of patients had no clinical signs requiring treatment. After 90 days of infiltration, no patients showed clinical signs. This improvement in the patients’ condition lasted for 180 days. All patients after treatment can fully resume normal activity with no pain.
2024-01-23T15:24:58Z
2024-01-23T15:24:58Z
2024-01
Article
Pardo-Camps, F.; Pardo-Bosch, F. New infiltration technique in the treatment of the Plantar Fascia Syndrome based on Platelet-Rich Plasma. "Journal of clinical medicine", 2024, vol. 13, núm. 1, article 170.
2077-0383
http://hdl.handle.net/2117/400070
10.3390/jcm13010170
eng
https://www.mdpi.com/2077-0383/13/1/170
http://creativecommons.org/licenses/by/4.0/
Open Access
Attribution 4.0 International
Multidisciplinary Digital Publishing Institute (MDPI)
oai:upcommons.upc.edu:2117/1168442021-05-13T12:55:30Zcom_2117_79680com_2117_28579com_2117_28577com_2117_79758com_2117_28581com_2117_15797col_2117_79868col_2117_79795col_2117_3055openAccess
Relative humidity vertical profiling using lidar-based synergistic methods in the framework of the Hygra-CD campaign
Labzovskii, Lev D.
Papayannis, Alexander
Binietoglou, Ioannis
Banks, Robert F.
Baldasano Recio, José María
Universitat Politècnica de Catalunya. Departament d'Enginyeria de Projectes i de la Construcció
Universitat Politècnica de Catalunya. GReCT - Grup de Recerca de Ciències de la Terra
Àrees temàtiques de la UPC::Desenvolupament humà i sostenible
Accurate continuous measurements of relative hu- midity (RH) vertical profiles in the lower troposphere have become a significant scientific challenge. In recent years a synergy of various ground-based remote sensing instru- ments have been successfully used for RH vertical profil- ing, which has resulted in the improvement of spatial reso- lution and, in some cases, of the accuracy of the measure- ment. Some studies have also suggested the use of high- resolution model simulations as input datasets into RH ver- tical profiling techniques. In this paper we apply two syn- ergetic methods for RH profiling, including the synergy of lidar with a microwave radiometer and high-resolution at- mospheric modeling. The two methods are employed for RH retrieval between 100 and 6000 m with increased spatial res- olution, based on datasets from the HygrA-CD (Hygroscopic Aerosols to Cloud Droplets) campaign conducted in Athens, Greece from May to June 2014. RH profiles from synergetic methods are then compared with those retrieved using single instruments or as simulated by high-resolution models. Our proposed technique for RH profiling provides improved sta- tistical agreement with reference to radiosoundings by 27 % when the lidar–radiometer (in comparison with radiometer measurements) approach is used and by 15 % when a lidar model is used (in comparison with WRF-model simulations). Mean uncertainty of RH due to temperature bias in RH pro- filing was ~ 4 . 34 % for the lidar–radiometer and ~ 1 . 22 % for the lidar–model methods. However, maximum uncer- tainty in RH retrievals due to temperature bias showed that lidar-model method is more reliable at heights greater than 2000 m. Overall, our results have demonstrated the capabil- ity of both combined methods for daytime measurements in heights between 100 and 6000 m when lidar–radiometer or lidar–WRF combined datasets are available.
2018-05-02T07:05:13Z
2018-05-02T07:05:13Z
2018-02-14
Article
Labzovskii, L. D., Papayannis, A., Binietoglou, I., Banks, R., Baldasano, J. Relative humidity vertical profiling using lidar-based synergistic methods in the framework of the Hygra-CD campaign. "Annales geophysicae", 14 Febrer 2018, vol. 36, núm. 1, p. 213-229.
0992-7689
http://hdl.handle.net/2117/116844
10.5194/angeo-36-213-2018
eng
info:eu-repo/grantAgreement/EC/H2020/692014/EU/East European Centre for Atmospheric Remote Sensing/ECARS
info:eu-repo/grantAgreement/EC/FP7/289923/EU/Initial Training for Atmospheric Remote Sensing/ITARS
info:eu-repo/grantAgreement/EC/H2020/654109/EU/Aerosols, Clouds, and Trace gases Research InfraStructure/ACTRIS-2
http://creativecommons.org/licenses/by-nc-nd/3.0/es/
Open Access
Attribution-NonCommercial-NoDerivs 3.0 Spain
oai:upcommons.upc.edu:2117/998412021-09-05T02:51:44Zcom_2117_79680com_2117_28579com_2117_28577com_2117_4013com_2117_79677com_2117_3307com_2117_28581com_2117_15797col_2117_79868col_2117_4014col_2117_79695col_2117_3308col_2117_3055openAccess
Ceramic macromembrane for tangento-axial micro- and ultrafiltration water systems
Cusidó Fàbregas, Joan Antoni
Cremades Oliver, Lázaro Vicente
Sitjar Cañellas, Rafael
Universitat Politècnica de Catalunya. Departament de Física
Universitat Politècnica de Catalunya. Departament d'Enginyeria de Projectes i de la Construcció
Universitat Politècnica de Catalunya. Departament d'Enginyeria Mecànica
Universitat Politècnica de Catalunya. GIIP - Grup de Recerca en Enginyeria de Projectes: Disseny i Sostenibilitat
Àrees temàtiques de la UPC::Enginyeria civil::Enginyeria hidràulica, marítima i sanitària::Enginyeria sanitària
An innovative proposal of tangento-axial filtration based on the concept of macromembrane (large size) is presented in the context of micro- and ultrafiltration ceramic membranes. The macromembrane is made of Al2O3–TiO2 by slip casting. It includes an internal system for rotating the fluid trough a propeller which enhances the tangento-axial filtration. This filtration yields better than the cross-flow filtration in conventional extruded ceramic tubes of small diameter. The reasons are, first, its larger sizes relative to the extruded tubular filters, and second, that it can work at higher pressures, resulting in better operational performance. Furthermore, costs of industrial-scale production could be lower. In this study, the conceptual basis, pilot plant, first experimental results, and proposals for improvement of the system to continue the project are presented.
2017-01-23T11:42:13Z
2017-01-23T11:42:13Z
2016-02-01
Article
Cusido, J., Cremades, L.V., Sitjar, R. Ceramic macromembrane for tangento-axial micro- and ultrafiltration water systems. "Desalination and water treatment", 1 Febrer 2016, vol. 57, p. 2737-2742.
1944-3994
http://hdl.handle.net/2117/99841
10.1080/19443994.2015.1044477
eng
http://www.tandfonline.com/doi/full/10.1080/19443994.2015.1044477
Open Access
oai:upcommons.upc.edu:2117/3617182022-02-06T15:45:43Zcom_2117_79680com_2117_28579com_2117_28577com_2117_3837com_2117_28581com_2117_15797col_2117_79868col_2117_3838col_2117_3055
Product-specific life cycle assessment of recycled gypsum as a replacement for natural gypsum in ordinary Portland cement: application to the Spanish context
Suárez, Sindy
Roca Ramon, Xavier
Gassó Domingo, Santiago
Universitat Politècnica de Catalunya. Departament d'Enginyeria de Projectes i de la Construcció
Universitat Politècnica de Catalunya. GRIC - Grup de Recerca i Innovació de la Construcció
Àrees temàtiques de la UPC::Edificació
The construction industry consumes large quantities of natural resources and simultaneously generates a considerable amount of construction and demolition waste (CDW). This includes gypsum waste (GW), which must be managed correctly. Besides, the cement manufacturing process, which is part of the construction industry, has a high environmental impact. Therefore, the aim of this study was to recover GW and use it in the manufacture of ordinary Portland cement (OPC), to improve waste management and minimize environmental impacts. To achieve this, we evaluated and compared the environmental impacts of the gypsum production process (primary and secondary [recycling] production) and the environmental impact of the use of recycled gypsum (RG) in the production of OPC. We used the methodology of life cycle assessment, and selected the IMPACT 2002+ as impact assessment method.
Local data were used wherever possible to ensure that the life cycle inventory (LCI) was representative of Spain. The data were primarily sourced from interviews with organizations and building materials companies in Spain, and visits to CDW waste recycling plants in Catalonia. Data from primary sources were completed and/or compared with the Ecoinvent v2.0 database and updated with Spanish data where possible.
The results of this study confirm that RG had environmental benefits in all the environmental categories evaluated when the GW was transported to a recycling plant at a distance equal to or less than 30 km. The study shows that the process of recycling gypsum consumes less than 65% of the energy needed to obtain natural gypsum (NG), and emits less than 65% of the greenhouse gases produced in the process of obtaining NG. Greater savings of 35% were observed in the categories of carcinogenic effects, ozone depletion and land occupation, even when gypsum waste was transported to a recycling plant at a distance of 50 km. In addition, we found that the environmental impact on the evaluated categories was slightly lower when RG was used instead of NG in the production of OPC. It was assumed that the distance from the site of production of gypsum to the cement plant was the same.
2022-02-04T13:11:39Z
2016-03-20
10000-01-01
Article
Suárez, S.; Roca, X.; Gasso, S. Product-specific life cycle assessment of recycled gypsum as a replacement for natural gypsum in ordinary Portland cement: application to the Spanish context. "Journal of cleaner production", 20 Març 2016, vol. 117, p. 150-159.
0959-6526
http://hdl.handle.net/2117/361718
10.1016/j.jclepro.2016.01.044
eng
http://www.sciencedirect.com/science/article/pii/S0959652616000792
Restricted access - publisher's policy
oai:upcommons.upc.edu:2117/1339402021-08-01T00:29:54Zcom_2117_79680com_2117_28579com_2117_28577com_2117_3837com_2117_28581com_2117_15797col_2117_79868col_2117_3838col_2117_3055openAccess
U-value time series analyses: Evaluating the feasibility of in-situ short-lasting IRT tests for heavy multi-leaf walls
Tejedor Herrán, Blanca
Casals Casanova, Miquel
Macarulla Martí, Marcel
Giretti, Alberto
Universitat Politècnica de Catalunya. Departament d'Enginyeria de Projectes i de la Construcció
Universitat Politècnica de Catalunya. GRIC - Grup de Recerca i Innovació de la Construcció
Àrees temàtiques de la UPC::Edificació
A gap in standardization of quantitative infrared thermography (IRT) directly leads to a lack of measurement pattern for determining in-situ U-values of heavy multi-leaf walls. Three groups of causal factors might influence the estimation of this build quality indicator: operating conditions, thermophysical properties and technical conditions. Focusing on the last one, previous studies underlined the difficulties of measuring below 3¿h. In contrast to active IRT, no algorithms have been found to process images, despite playing an important role in the effectiveness and robustness of IRT. The traditional approach involves analysing from 120 to 7200 thermograms with a data acquisition interval of 1¿min up to 1¿s respectively. The aim of this paper was to critically assess the test duration that is traditionally used. Six real heavy multi-leaf walls were tested under a stationary regime as a stochastic process of underlying data. For the first time, a research based on two U-value time series analyses (statistical tests and a signal modelling technique by MATLAB) demonstrated the feasibility of short-lasting IRT tests. Moreover, this research posed an innovative data management tool to automate this non-destructive testing (NDT) in mid-term, stopping IRT tests in real time once the right level of accuracy was achieved.
2019-06-04T15:13:26Z
2021-08-01T00:29:54Z
2019-07-15
Article
Tejedor, B. [et al.]. U-value time series analyses: Evaluating the feasibility of in-situ short-lasting IRT tests for heavy multi-leaf walls. "Building and environment", 15 Juliol 2019, vol. 159, p. 1-19.
0360-1323
http://hdl.handle.net/2117/133940
10.1016/j.buildenv.2019.05.001
eng
https://www.sciencedirect.com/science/article/pii/S0360132319303117b
http://creativecommons.org/licenses/by-nc-nd/3.0/es/
Open Access
Attribution-NonCommercial-NoDerivs 3.0 Spain
oai:upcommons.upc.edu:2117/3837312023-02-26T21:15:49Zcom_2117_79680com_2117_28579com_2117_28577com_2117_15797col_2117_79868col_2117_3055openAccess
Determinants of the intention to use MOOCs as a complementary tool: an observational study of ecuadorian teachers
Yamba Yugsi, Marco
Atiaja Atiaja, Lourdes
Luján Mora, Sergio
Eguía Gómez, Jose Luis
Universitat Politècnica de Catalunya. Departament d'Enginyeria de Projectes i de la Construcció
Àrees temàtiques de la UPC::Ensenyament i aprenentatge
New technological advances and globalization have undoubtedly given rise to new forms of learning. Massive Open Online Courses (MOOCs), which are a kind of evolution on e-learning, have the endorsement of prestigious universities around the world, and are transforming the traditional teaching–learning process. In Ecuador, these online courses are based on the Basic General Education system and are neither popular among students nor widely used by teachers in their teaching method, thus, this teaching system is not considered as an official qualification. The inclusion of this tool in the Ecuadorian educational system as a learning resource would expand access to equal opportunities to students and teachers from all over the country. Therefore, our proposal is to use the MOOCs as a source with all the instructional contents of the subject and as classwork based on the flipped-classroom method. In this way, such resources can be an aid to traditional high school classes, and the average grade achieved by students through this platform, as well as the student’s participation, may be part of the formal evaluation system in any institution. With the purpose of measuring the level of confidence in online education and the usage of MOOCs as a tool for teachers’ work, a descriptive and analytical approach has been taken in this study. A quantitative survey was administered to 696 Basic General Education teachers who took used this type of course. The results of this investigation show that 93.9% of the teachers trust the online education; 89% are ready to use MOOCs as a teaching–learning resource and 79% would use MOOCs as part of the final grade. These data prove that MOOCs could be a complementary tool for Basic General Education in Ecuador, so they could contribute to improve learning outcomes and the development of traditional education.
2023-02-20T14:05:26Z
2023-02-20T14:05:26Z
2022-11-01
Article
Yamba, M. [et al.]. Determinants of the intention to use MOOCs as a complementary tool: an observational study of ecuadorian teachers. "Sustainability (Switzerland)", 1 Novembre 2022, vol. 14, núm. 22, article 15189, p. 1-11.
2071-1050
http://hdl.handle.net/2117/383731
10.3390/su142215189
eng
https://www.mdpi.com/2071-1050/14/22/15189
http://creativecommons.org/licenses/by/4.0/
Open Access
Attribution 4.0 International
Multidisciplinary Digital Publishing Institute (MDPI)
oai:upcommons.upc.edu:2117/1194792022-10-09T02:02:46Zcom_2117_79680com_2117_28579com_2117_28577com_2117_79679com_2117_79723com_2117_28581com_2117_15797col_2117_79868col_2117_79694col_2117_79768col_2117_3055
Mives multicriteria assessment of urban pavement conditions: application to a case study in Barcelona
Pujadas Álvarez, Pablo
Pialarissi Cavalaro, Sergio Henrique
Aguado de Cea, Antonio
Universitat Politècnica de Catalunya. Departament d'Enginyeria de Projectes i de la Construcció
Universitat Politècnica de Catalunya. Departament d'Enginyeria Civil i Ambiental
Universitat Politècnica de Catalunya. EC - Enginyeria de la Construcció
Àrees temàtiques de la UPC::Urbanisme
There are very few methods that can be used for the assessment of pavement conditions. Their application to urban networks tends to be complex, given the wide variety of urban pavement types (concrete, asphalt, and paving tiles) and their different functions (traffic, pedestrian, or both). A flexible method that can address the complexity of different areas is therefore proposed in this paper through a case study of pavement conditions. Hence the interest of this new approach for pavement management that employs a multi-criteria method adaptable to various urban environments: the Integrated Value Model for Structural Assessment (MIVES). It incorporates the Value Function (VF) concept in an Analytic Hierarchy Process (AHP), combining both Multi-criteria Decision Making and Multi-Attribute Utility Theory. The methodology is presented and its sensitivity is evaluated by means of a case study in the city of Barcelona. The quality index of various pavements is assessed through a survey of pavement distresses in a systematic categorisation of urban network pavement categories that is accurate, consistent, and repeatable
2018-07-18T09:38:09Z
2018-05-16
10000-01-01
Article
Pujadas, P., Pialarissi, S., Aguado, A. Mives multicriteria assessment of urban pavement conditions: application to a case study in Barcelona. "Road materials and pavement design", 16 Maig 2018.
1468-0629
http://hdl.handle.net/2117/119479
10.1080/14680629.2018.1474788
eng
https://www.tandfonline.com/doi/abs/10.1080/14680629.2018.1474788?journalCode=trmp20
http://creativecommons.org/licenses/by-nc-nd/3.0/es/
Restricted access - publisher's policy
Attribution-NonCommercial-NoDerivs 3.0 Spain
oai:upcommons.upc.edu:2117/3911052023-07-23T17:01:35Zcom_2117_79680com_2117_28579com_2117_28577com_2117_15797col_2117_79868col_2117_3055openAccess
Evaluation of the power generation impact for the mobility of battery electric vehicles
Cremades Oliver, Lázaro Vicente
Rey, Javier
Universitat Politècnica de Catalunya. Departament d'Enginyeria de Projectes i de la Construcció
Àrees temàtiques de la UPC::Energies
European institutions have decided to ban the sale of Internal Combustion Vehicles (ICEVs) in the EU from 2035. This opens a possible scenario in which, in the not-too-distant future, all vehicles circulating in Europe are likely to be Battery Electric Vehicles (BEVs). The Spanish vehicle fleet is one of the oldest and has the lowest percentage of BEVs in Europe. The aim of this study is to evaluate the hypothetical scenario in which the current mobility of ICEVs is transformed into BEVs, in the geographical area of the province of Barcelona and in Spain in general. The daily electricity consumption, the required installation capacity of wind and solar photovoltaic energies, and the potential reduction of NOx and particulate matter (PM) emissions are estimated. The daily emission reduction would be about 314 tons of NOx and 17 tons of PM in Spain. However, the estimated investment required in Spain to generate the additional electricity from renewable sources would be enormous (over EUR 25.4 billion), representing, for example, 5.5% of the total national budget in 2022.
2023-07-17T11:45:05Z
2023-07-17T11:45:05Z
2023-06-28
Article
Cremades, L.V.; Rey, J. Evaluation of the power generation impact for the mobility of battery electric vehicles. "Energies", 28 Juny 2023, vol. 16, núm. 13, article 5006.
1996-1073
http://hdl.handle.net/2117/391105
10.3390/en16135006
eng
https://www.mdpi.com/1996-1073/16/13/5006
http://creativecommons.org/licenses/by/4.0/
Open Access
Attribution 4.0 International
oai:upcommons.upc.edu:2117/789892022-05-17T10:09:32Zcom_2117_79680com_2117_28579com_2117_28577com_2117_80518com_2117_23714com_2117_28578com_2117_79758com_2117_28581com_2117_15797col_2117_79868col_2117_80537col_2117_79795col_2117_3055openAccess
A Model-based analysis of SO2 and NO2 dynamics from coal-fired power plants under representative synoptic circulation types over the Iberian Peninsula
Valverde Morales, Victor Manuel
Pay Pérez, M. Teresa
Baldasano Recio, José María
Universitat Politècnica de Catalunya. Departament d'Enginyeria de Projectes i de la Construcció
Barcelona Supercomputing Center
Universitat Politècnica de Catalunya. GReCT - Grup de Recerca de Ciències de la Terra
Àrees temàtiques de la UPC::Desenvolupament humà i sostenible::Degradació ambiental::Contaminació atmosfèrica
Emissions of SO2 and NO2 from coal-fired power plants are a significant source of air pollution. In order to typify the power plants' plumes dynamics and quantify their contribution to air quality, a comprehensive characterisation of seven coal-fired power plant plumes has been performed under six representative circulation types (CTs) identified by means of a synoptic classification over the Iberian Peninsula. The emission and the transport of SO2 and NO2 have been simulated with the CALIOPE air quality forecasting system that couples the HERMES emission model for Spain and WRF and CMAQ models. For the facilities located in continental and Atlantic areas (As Pontes, Aboño, and Compostilla) the synoptic advection controls pollutant transport, however for power plants located along the Mediterranean or over complex-terrains (Guardo, Andorra, Carboneras, and Los Barrios), plume dynamics are driven by a combination of synoptic and mesoscale mountain–valley and sea–land breezes. The contribution of power plants to surface concentration occurs mainly close to the source (< 20 km) related to a fumigation process when the emission injection takes place within the planetary boundary layer reaching up to 55 µg SO2 m- 3 and 32 µg NO2 m- 3. However, the SO2 and NO2 plumes can reach long distances (> 250 km from the sources) especially for CTs characterised by Atlantic advection.
2015-11-10T18:52:54Z
2015-11-10T18:52:54Z
2016-01-15
Article
Valverde, V., Pay, M.T., Baldasano, J. A Model-based analysis of SO2 and NO2 dynamics from coal-fired power plants under representative synoptic circulation types over the Iberian Peninsula. "Science of the total environment", 15 Gener 2016, vol. 541, p. 701-713.
0048-9697
http://hdl.handle.net/2117/78989
10.1016/j.scitotenv.2015.09.111
eng
http://www.sciencedirect.com/science/article/pii/S0048969715307725
info:eu-repo/grantAgreement/MINECO//CGL2013-46736-R/ES/PREDICCION DE AEROSOLES Y EVALUACION DEL FORZAMIENTO RADIATIVO PARA APLICACIONES METEOROLOGICAS Y CLIMATICAS CON EL MODELO ON-LINE NMMB%2FBSC-CTM/
https://creativecommons.org/licenses/by-nc-nd/4.0/
Open Access
Attribution-NonCommercial-NoDerivs 4.0 International License
oai:upcommons.upc.edu:2117/1069612020-07-23T20:42:17Zcom_2117_79680com_2117_28579com_2117_28577com_2117_3837com_2117_28581com_2117_15797col_2117_79868col_2117_3838col_2117_3055openAccess
Implementation of predictive control in a commercial building energy management system using neural networks
Macarulla Martí, Marcel
Casals Casanova, Miquel
Forcada Matheu, Núria
Gangolells Solanellas, Marta
Universitat Politècnica de Catalunya. Departament d'Enginyeria de Projectes i de la Construcció
Universitat Politècnica de Catalunya. GRIC - Grup de Recerca i Innovació de la Construcció
Àrees temàtiques de la UPC::Edificació
Most existing commercial building energy management systems (BEMS) are reactive rule-based. This means that an action is produced when an event occurs. In consequence, these systems cannot predict future scenarios and anticipate events to optimize building operation. This paper presents the procedure of implementing a predictive control strategy in a commercial BEMS for boilers in buildings, and describes the results achieved. The proposed control is based on a neural network that turns on the boiler each day at the optimum time, according to the surrounding environment, to achieve thermal comfort levels at the beginning of the working day. The control strategy presented in this paper is compared with the current control strategy implemented in BEMS that is based on scheduled on/off control. The control strategy was tested during one heating season and a set of key performance indicators were used to assess the benefits of the proposed control strategy. The results showed that the implementation of predictive control in a BEMS for building boilers can reduce the energy required to heat the building by around 20% without compromising the user’s comfort.
2017-07-27T12:00:42Z
2019-07-01T08:06:01Z
2017-09-15
Article
Macarulla, M., Casals, M., Forcada, N., Gangolells, M. Implementation of predictive control in a commercial building energy management system using neural networks. "Energy and buildings", 15 Setembre 2017, vol. 151, p. 511-519.
0378-7788
http://hdl.handle.net/2117/106961
10.1016/j.enbuild.2017.06.027
eng
http://www.sciencedirect.com/science/article/pii/S0378778817300907
http://creativecommons.org/licenses/by-nc-nd/3.0/es/
Open Access
Attribution-NonCommercial-NoDerivs 3.0 Spain
oai:upcommons.upc.edu:2117/3962292023-11-13T09:20:39Zcom_2117_79680com_2117_28579com_2117_28577com_2117_184554com_2117_184544com_2117_79681com_2117_3837com_2117_28581com_2117_15797col_2117_79868col_2117_184712col_2117_79693col_2117_3838col_2117_3055openAccess
Assessment of the energy implications adopting adaptive thermal comfort models during the cooling season: a case study for mediterranean nursing homes
Vergés Eiras, Roger
Gaspar Fàbregas, Kàtia
Forcada Matheu, Núria
Universitat Politècnica de Catalunya. Doctorat en Enginyeria de la Construcció
Universitat Politècnica de Catalunya. Departament de Tecnologia de l'Arquitectura
Universitat Politècnica de Catalunya. Departament d'Enginyeria de Projectes i de la Construcció
Universitat Politècnica de Catalunya. GRIC - Grup de Recerca i Innovació de la Construcció
Àrees temàtiques de la UPC::Edificació::Instal·lacions i acondicionament d'edificis::Instal·lacions de climatització
The growing demand in the use of cooling in buildings for the effects of climate change and the thermal comfort conditions requires the adoption of energy conservation measures. Implementing adaptive thermal comfort models can result in a significant decrease in energy consumption, especially in buildings where the users are groups of vulnerable people. However, no study has proposed a prediction of energy consumption from a comfort-based approach for nursing homes. This article presents the development of adaptive consumption models to assess the energy implications of HVAC systems for the cooling season by measuring real data on energy consumption and environmental conditions. The adaptive consumption models are implemented in eight nursing homes located in two different climates (Mediterranean and Continental-Mediterranean). The findings reveal that adaptive thermal comfort control methods result in important energy savings in comparison to a fixed set point temperature. The study demonstrates a potential average energy savings of up to 9.9 % (8.1 % in Mediterranean climate and 11.7 % in the Continental-Mediterranean climate) for the analysed nursing homes. The prediction of energy consumption from an adaptive comfort-based approach in nursing homes will enhance their energy efficiency ensuring the well-being of their vulnerable residents by maintaining optimal thermal comfort. These findings hold significant value for the effective energy management of buildings in future climate change scenarios and warrant careful consideration by nursing home facility managers.
2023-11-10T09:29:57Z
2023-11-10T09:29:57Z
2023-11-15
Article
Vergés, R.; Gaspar, K.; Forcada, N. Assessment of the energy implications adopting adaptive thermal comfort models during the cooling season: a case study for mediterranean nursing homes. "Energy and buildings", 15 Novembre 2023, vol. 299, núm. 113598.
1872-6178
http://hdl.handle.net/2117/396229
10.1016/j.enbuild.2023.113598
eng
https://www.sciencedirect.com/science/article/pii/S0378778823008289
info:eu-repo/grantAgreement/AEI/Plan Estatal de Investigación Científica y Técnica y de Innovación 2017-2020/PID2019-106777RB-C21/ES/IMPLICACIONES DEL CONFORT TERMICO DE LOS ANCIANOS EN EL INTERIOR AL CONSUMO ENERGETICO/
http://creativecommons.org/licenses/by-nc-nd/4.0/
Open Access
Attribution-NonCommercial-NoDerivatives 4.0 International
Elsevier
oai:upcommons.upc.edu:2117/865922022-05-17T10:09:32Zcom_2117_79680com_2117_28579com_2117_28577com_2117_80518com_2117_23714com_2117_28578com_2117_79758com_2117_28581com_2117_15797col_2117_79868col_2117_80537col_2117_79795col_2117_3055openAccess
Forecasting the northern African dust outbreak towards Europe in April 2011: a model intercomparison
Huneeus, N.
Basart, Sara
Baldasano Recio, José María
Universitat Politècnica de Catalunya. Departament d'Enginyeria de Projectes i de la Construcció
Barcelona Supercomputing Center
Universitat Politècnica de Catalunya. GReCT - Grup de Recerca de Ciències de la Terra
Àrees temàtiques de la UPC::Desenvolupament humà i sostenible::Degradació ambiental::Contaminació atmosfèrica
In the framework of theWorld Meteorological Organisation’s
Sand and Dust Storm Warning Advisory and
Assessment System, we evaluated the predictions of five
state-of-the-art dust forecast models during an intense Saharan
dust outbreak affecting western and northern Europe in
April 2011. We assessed the capacity of the models to predict
the evolution of the dust cloud with lead times of up
to 72 h using observations of aerosol optical depth (AOD)
from the AErosol RObotic NETwork (AERONET) and the
Moderate Resolution Imaging Spectroradiometer (MODIS)
and dust surface concentrations from a ground-based measurement
network. In addition, the predicted vertical dust
distribution was evaluated with vertical extinction profiles from the Cloud and Aerosol Lidar with Orthogonal Polarization
(CALIOP). To assess the diversity in forecast capability
among the models, the analysis was extended to wind
field (both surface and profile), synoptic conditions, emissions
and deposition fluxes. Models predict the onset and
evolution of the AOD for all analysed lead times. On average,
differences among the models are larger than differences
among lead times for each individual model. In spite of large
differences in emission and deposition, the models present
comparable skill for AOD. In general, models are better in
predicting AOD than near-surface dust concentration over
the Iberian Peninsula. Models tend to underestimate the longrange
transport towards northern Europe. Our analysis suggests that this is partly due to difficulties in simulating the
vertical distribution dust and horizontal wind. Differences in
the size distribution and wet scavenging efficiency may also
account for model diversity in long-range transport.
2016-05-04T15:07:56Z
2016-05-04T15:07:56Z
2016-04-21
Article
Huneeus, N., Basart, S., Baldasano, J. Forecasting the northern African dust outbreak towards Europe in April 2011: a model intercomparison. "Atmospheric chemistry and physics", 21 Abril 2016, vol. 8, núm. 16, p. 4967-4986.
1680-7316
http://hdl.handle.net/2117/86592
10.5194/acp-16-4967-2016
eng
http://www.atmos-chem-phys.net/16/4967/2016/
info:eu-repo/grantAgreement/MINECO/SEV-2011-00067
info:eu-repo/grantAgreement/EC/FP7/257543/EU/Desert Storms/DESERTSTORMS
info:eu-repo/grantAgreement/EC/FP7/262254/EU/Aerosols, Clouds, and Trace gases Research Infrastructure Network/ACTRIS
info:eu-repo/grantAgreement/EC/H2020/654109/EU/Aerosols, Clouds, and Trace gases Research InfraStructure/ACTRIS-2
info:eu-repo/grantAgreement/EC/FP7/283576/EU/Monitoring Atmospheric Composition and Climate Interim Implementation/MACC II
info:eu-repo/grantAgreement/EC/H2020/633080/EU/Monitoring Atmospheric Composition and Climate -III/MACC-III
http://creativecommons.org/licenses/by-nc-nd/3.0/es/
Open Access
oai:upcommons.upc.edu:2117/792682019-12-18T13:41:00Zcom_2117_79680com_2117_28579com_2117_28577com_2117_79677com_2117_3307com_2117_28581com_2117_15797col_2117_79868col_2117_79695col_2117_3308col_2117_3055oai:upcommons.upc.edu:2117/3969672023-11-26T21:37:29Zcom_2117_79680com_2117_28579com_2117_28577com_2117_184554com_2117_184544com_2117_3837com_2117_28581com_2117_15797col_2117_79868col_2117_184712col_2117_3838col_2117_3055openAccess
Data-driven model for predicting indoor air quality and thermal comfort levels in naturally ventilated educational buildings using easily accessible data for schools
Miao, Sen
Gangolells Solanellas, Marta
Tejedor Herrán, Blanca
Universitat Politècnica de Catalunya. Doctorat en Enginyeria de la Construcció
Universitat Politècnica de Catalunya. Departament d'Enginyeria de Projectes i de la Construcció
Universitat Politècnica de Catalunya. GRIC - Grup de Recerca i Innovació de la Construcció
Àrees temàtiques de la UPC::Desenvolupament humà i sostenible::Enginyeria ambiental::Tractament d'emissions i olors
Modeling indoor air quality and thermal conditions in educational buildings is significant for protecting students' health, well-being, and productivity. The predictive models in existing studies were mainly built and applied in controlled environments with HVAC systems. These models did not involve occupant-related factors, had limited scope in a single building or space, and required indoor environmental monitoring data for the model input. This limits the applicability and generalization ability of the model in a large number of schools relying on natural ventilation, where indoor air quality and thermal conditions are significantly affected by occupants’ activities and ventilation practices. Hence, this paper proposes a methodology to develop a data-driven model for predicting the level of indoor air quality and thermal comfort in naturally ventilated educational buildings, and identifies the key influential factors. The model was developed using the class-weighted random forest algorithm with data collected from a large measurement campaign. The developed model demonstrated good accuracy, generalization ability, and robustness. The analysis concluded that occupancy, windows and doors operation, and outdoor environmental parameters are key factors must be involved, whereas building characteristics have no practical contribution to the prediction. The model inputs are easily accessible data for schools. Once the model is developed with data collected from an initial measurement campaign in representative educational buildings, it can be used in all local schools without requiring monitoring sensor networks, thereby rendering a “cost-effective” way of assessing indoor air quality and thermal comfort to help relevant stakeholders improve building management practices in schools.
2023-11-23T16:38:11Z
2023-11-23T16:38:11Z
2023-12
Article
Miao, S.; Gangolells, M.; Tejedor, B. Data-driven model for predicting indoor air quality and thermal comfort levels in naturally ventilated educational buildings using easily accessible data for schools. "Journal of building engineering", Desembre 2023, vol. 80, núm. article 108001.
2352-7102
http://hdl.handle.net/2117/396967
10.1016/j.jobe.2023.108001
eng
https://www.sciencedirect.com/science/article/pii/S2352710223021812
info:eu-repo/grantAgreement/AEI/Plan Estatal de Investigación Científica y Técnica y de Innovación 2017-2020/PID2020-117366RB-I00/ES/ESTRATEGIAS DE VENTILACION OPTIMIZADAS CONSIDERANDO LA CALIDAD DEL AIRE INTERIOR, EL CONFORT TERMICO Y EL CONSUMO DE ENERGIA EN EDIFICIOS EDUCATIVOS /
http://creativecommons.org/licenses/by-nc-nd/4.0/
Open Access
Attribution-NonCommercial-NoDerivatives 4.0 International
Elsevier
oai:upcommons.upc.edu:2117/3957432023-11-03T09:40:18Zcom_2117_79680com_2117_28579com_2117_28577com_2117_3233com_2117_28581com_2117_15797col_2117_79868col_2117_3234col_2117_3055
Optimización de un sistema de poligeneración energética para el edificio TR5 de la Universidad Politécnica de Cataluña (UPC)-Sede Terrassa
Pinto Maquillon, Edwin Samir
Amante García, Beatriz
Universitat Politècnica de Catalunya. Departament d'Enginyeria de Projectes i de la Construcció
Universitat Politècnica de Catalunya. ENMA - Enginyeria del Medi Ambient
Àrees temàtiques de la UPC::Energies::Eficiència energètica
El sector de edificios representa alrededor de un tercio de la energía relacionada con las emisiones de gases de efecto invernadero (GEI) de la UE, convirtiéndolo en un sector crucial para alcanzar los objetivos energéticos y medioambientales de la UE. Por ende, la UE ha establecido un marco legislativo para fomentar la integración de tecnologías verdes y mejorar el rendimiento energético en los edificios. En este sentido, considerando las necesidades de rehabilitación de los edificios públicos en España, y en particular en Catalunya, este trabajo propone la optimización de un sistema de poligeneración para el edificio TR5 de la UPC ubicado en Terrassa. Esta se lleva a cabo usando un modelo de Programación Lineal Entera Mixta para optimizar económicamente el sistema bajo distintos escenarios. Los resultados muestran la viabilidad del uso de fotovoltaica en todos los escenarios, mientras que otras tecnologías como los colectores solares térmicos, almacenamientos energéticos, entre otros, no lo son. Por otro lado, la configuración óptima cambia según los precios de la energía, pero también el impacto ambiental. En particular, los precios más altos del gas natural conducen a reducir las emisiones de GEI, mientras que precios más altos de electricidad no conllevan a ello necesariamente.
2023-11-03T09:36:18Z
2023-11-03T09:36:18Z
2023-11
Article
Pinto, E.; Amante, B. Optimización de un sistema de poligeneración energética para el edificio TR5 de la Universidad Politécnica de Cataluña (UPC)-Sede Terrassa. "Dyna ingenieria e industria", Novembre 2023, vol. 98, núm. 6, p. 572-579.
0012-7361
http://hdl.handle.net/2117/395743
10.6036/10820
spa
https://www.revistadyna.com/busqueda/optimizacion-de-un-sistema-de-poligeneracion-energetica-para-edificio-tr5-de-universidad-politecnica
Restricted access - publisher's policy
east=2.022859677672386; north=41.56289788667184; name=Carrer de Colom, 9, 08222 Terrassa, Barcelona, Espanya
oai:upcommons.upc.edu:2117/1159652020-07-23T20:45:01Zcom_2117_79680com_2117_28579com_2117_28577com_2117_79679com_2117_79723com_2117_28581com_2117_3837com_2117_15797col_2117_79868col_2117_79694col_2117_79768col_2117_3838col_2117_3055openAccess
Embedded distributed optical fiber sensors in reinforced concrete structures: a case study
Barrias, Antonio Jose de Sousa
Casas Rius, Joan Ramon
Villalba Herrero, Sergi
Universitat Politècnica de Catalunya. Departament d'Enginyeria Civil i Ambiental
Universitat Politècnica de Catalunya. Departament d'Enginyeria de Projectes i de la Construcció
Universitat Politècnica de Catalunya. EC - Enginyeria de la Construcció
Universitat Politècnica de Catalunya. GRIC - Grup de Recerca i Innovació de la Construcció
Àrees temàtiques de la UPC::Enginyeria civil::Materials i estructures::Materials i estructures de formigó
When using distributed optical fiber sensors (DOFS) on reinforced concrete structures, a compromise must be achieved between the protection requirements and robustness of the sensor deployment and the accuracy of the measurements both in the uncracked and cracked stages and under loading, unloading and reloading processes. With this in mind the authors have carried out an experiment where polyimide-coated DOFS were installed on two concrete beams, both embedded in the rebar elements and also bonded to the concrete surface. The specimens were subjected to a three-point load test where after cracking, they are unloaded and reloaded again to assess the capability of the sensor when applied to a real loading scenarios in concrete structures. Rayleigh Optical Frequency Domain Reflectometry (OFDR) was used as the most suitable technique for crack detection in reinforced concrete elements. To verify the reliability and accuracy of the DOFS measurements, additional strain gauges were also installed at three locations along the rebar. The results show the feasibility of using a thin coated polyimide DOFS directly bonded on the reinforcing bar without the need of indention or mechanization. A proposal for a Spectral Shift Quality (SSQ) threshold is also obtained and proposed for future works when using polyimide-coated DOFS bonded to rebars with cyanoacrylate adhesive.
2018-04-04T15:55:29Z
2018-04-04T15:55:29Z
2018-04
Article
De Sousa, A., Casas, J., Villalba, S. Embedded distributed optical fiber sensors in reinforced concrete structures: a case study. "Sensors", Abril 2018, vol. 18, núm. 4, p. 1-22.
1424-8220
http://hdl.handle.net/2117/115965
10.3390/s18040980
eng
http://www.mdpi.com/1424-8220/18/4/980
info:eu-repo/grantAgreement/EC/H2020/642453/EU/Training in Reducing Uncertainty in Structural Safety/TRUSS
http://creativecommons.org/licenses/by/3.0/es/
Open Access
Attribution 3.0 Spain
Multidisciplinary Digital Publishing Institute (MDPI)
oai:upcommons.upc.edu:2117/3954272023-12-12T05:06:29Zcom_2117_79680com_2117_28579com_2117_28577com_2117_3837com_2117_28581com_2117_15797col_2117_79868col_2117_3838col_2117_3055
Holistic overview of natural ventilation and mixed mode in built environment of warm climate zones and hot seasons
Bienvenido Huertas, David
De la Hoz Torres, Maria Luisa
Aguilar Aguilera, Antonio J.
Tejedor Herrán, Blanca
Sanchez Garcia, Daniel
Universitat Politècnica de Catalunya. Departament d'Enginyeria de Projectes i de la Construcció
Universitat Politècnica de Catalunya. GRIC - Grup de Recerca i Innovació de la Construcció
Àrees temàtiques de la UPC::Edificació
The climate change leads to periods of extreme events (i.e. reduction of cold seasons, heat waves, overheating, urban heat island among others) that affect the performance of residential and tertiary buildings with high occupancy (i.e. hospitals, schools, commercial centres, offices etc). However, most of low-carbon policies do not consider the ventilation as a mitigation measure. In fact, a lack of studies on natural ventilation (NV) and mixed-mode (MM) strategies was detected, especially for warm regions or areas with hot and humid climates. This paper aims to carry out a bibliometric analysis from 1928 to 2023, to observe the evolution of the topic. After identifying the main research clusters (thermal comfort, energy efficiency, indoor air quality and simulation tools) by science mapping, the most relevant publications of the last 20 years were assessed (2003–2023). The results of this study revealed that only 1.51 % of the scientific documents in 95 years corresponded to an extensive literature review, although epidemic or disease outbreaks led to peaks of production in this topic. This emphasizes the importance of observing what was done and how was implemented over the years. Regarding the clusters, some relevant aspects can be highlighted: (i) non-homogeneity of studies on NV or MM related to building type; (ii) interregional projects should be drawn up to check the effectiveness of NV and MM, especially when other architectural techniques are adopted (i.e. solar chimneys, window wall ratio –WWR-, thermally activated building structures –TABS- etc); (iii) the optimization of simulation tools should be based on the incorporation of BIM and generative design for NV and MM.
2023-10-27T06:59:10Z
2023-11-01
2025-12-01
Article
Bienvenido-Huertas, D. [et al.]. Holistic overview of natural ventilation and mixed mode in built environment of warm climate zones and hot seasons. "Building and environment", 1 Novembre 2023, vol. 245, núm. 110942.
0360-1323
http://hdl.handle.net/2117/395427
10.1016/j.buildenv.2023.110942
eng
https://www.sciencedirect.com/science/article/abs/pii/S0360132323009691
http://creativecommons.org/licenses/by-nc-nd/4.0/
Restricted access - publisher's policy
Attribution-NonCommercial-NoDerivatives 4.0 International
Elsevier
oai:upcommons.upc.edu:2117/1783912020-07-23T20:47:05Zcom_2117_79680com_2117_28579com_2117_28577com_2117_3552com_2117_28581com_2117_79681com_2117_3282com_2117_3837com_2117_15797col_2117_79868col_2117_3553col_2117_79693col_2117_3283col_2117_3838col_2117_3055openAccess
Urban agriculture in the framework of sustainable urbanism
Nadal, Ana
Cerón Palma, Ileana
Cuerva Contreras, Eva
Gabarrell Durany, Xavier
Josa Garcia-Tornel, Alejandro
Rieradevall Pons, Joan
Pons Valladares, Oriol
Sanyé-Mengual, Esther
Universitat Politècnica de Catalunya. Departament d'Enginyeria de Projectes i de la Construcció
Universitat Politècnica de Catalunya. Departament de Tecnologia de l'Arquitectura
Universitat Politècnica de Catalunya. GRIC - Grup de Recerca i Innovació de la Construcció
Universitat Politècnica de Catalunya. MECMAT - Mecànica de Materials
Universitat Politècnica de Catalunya. GAT - Grup d'Arquitectura i Tecnologia
Àrees temàtiques de la UPC::Desenvolupament humà i sostenible
Agriculture represents a crucial phase in the development of mankind. Although cities initially had close ties withagriculture, which was a key element in ancient civilisations, in modern twentieth-century urban plans, such as Le Corbusier’s Chandigarh or Lucio Costa’s Brazilia, agriculture was banished from large cities. The demographic growth of urban areas today and its predictions for the short and long term have
increased the value of urban agriculture.
2020-02-24T11:13:22Z
2020-02-24T11:13:22Z
2015
Article
Nadal, A. [et al.]. Urban agriculture in the framework of sustainable urbanism. "Temes de disseny", 2015, núm. 31, p. 92-103.
0213-6023
http://hdl.handle.net/2117/178391
eng
http://www.raco.cat/index.php/Temes/article/view/299595/390474
http://creativecommons.org/licenses/by-nc-nd/3.0/es/
Open Access
Attribution-NonCommercial-NoDerivs 3.0 Spain
oai:upcommons.upc.edu:2117/3294272022-07-28T00:26:22Zcom_2117_79680com_2117_28579com_2117_28577com_2117_184550com_2117_184544com_2117_3837com_2117_28581com_2117_15797col_2117_79868col_2117_184598col_2117_3838col_2117_3055openAccess
Analysis of empirical methods for the quantification of N2O emissions in wastewater treatment plants: comparison of emission results obtained from the IPCC Tier 1 methodology and the methodologies that integrate operational data
Ramírez Melgarejo, Monserrat Guadalupe
Reyes Figueroa, A.D.
Gassó Domingo, Santiago
Güerecua Hernandez, L. Patricia
Universitat Politècnica de Catalunya. Doctorat en Enginyeria Ambiental
Universitat Politècnica de Catalunya. Departament d'Enginyeria de Projectes i de la Construcció
Universitat Politècnica de Catalunya. GRIC - Grup de Recerca i Innovació de la Construcció
Àrees temàtiques de la UPC::Desenvolupament humà i sostenible::Enginyeria ambiental::Tractament de l'aigua
Àrees temàtiques de la UPC::Desenvolupament humà i sostenible::Degradació ambiental::Contaminació atmosfèrica
Wastewater is a source of N2O emission that is generated, both directly from advanced treatment plants and indirectly from the discharge of wastewater into the natural environment, due to its remaining nitrogen content. There are a variety of methods based on different parameters used to calculate N2O emission in wastewater treatment plants. The methodology proposed by the IPCC is used as an international reference for national inventories. In this work, we use five international methodologies to calculate the N2O emission of the WWTPs in two areas with high population density: The Metropolitan Area of Barcelona (MAB) and Mexico City (MXC). The MAB has 100% population served and has advanced treatment plants (five WWTP) and traditional wastewater treatment plants (two WWTP), the MXC served 14% of its population and had advanced treatment plants (six WWTP) and traditional plants (nineteen WWTP) in 2016. The results obtained show that the IPCC and Das methodologies underestimate the emission of N2O by considering the per capita consumption of proteins as a constant nitrogen value and also by the suggested emission factors. The methodologies that use the operational data of each plant provide emission results closer to those found in the literature. The value of TN should be the parameter to be considered for a correct estimate of the N2O emission in the WWTPs. The emission factors currently used are very low, with a low level of confidence of up to 1.3%. The range currently used should be increased and have a minimum range of 0.03 kg N2O-N/kg N. The emission factors reported in the literature are very variable and with very high levels of uncertainty, and therefore underestimate the emission of N2O in WWTPs. More research should be done to obtain higher and more reliable emission factors than those currently used.
2020-09-29T14:52:09Z
2022-07-28T00:26:22Z
2020-12
Article
Ramírez, M. [et al.]. Analysis of empirical methods for the quantification of N2O emissions in wastewater treatment plants: comparison of emission results obtained from the IPCC Tier 1 methodology and the methodologies that integrate operational data. "Science of the total environment", Desembre 2020, vol. 747, p. 141288:1-141288:12.
0048-9697
http://hdl.handle.net/2117/329427
10.1016/j.scitotenv.2020.141288
eng
https://www.sciencedirect.com/science/article/abs/pii/S0048969720348178
https://creativecommons.org/licenses/by-nc-nd/4.0/
Open Access
© 2019. Elsevier
Attribution-NonCommercial-NoDerivatives 4.0 International
Elsevier
oai:upcommons.upc.edu:2117/1048012021-11-14T03:23:13Zcom_2117_79680com_2117_28579com_2117_28577com_2117_79677com_2117_3307com_2117_28581com_2117_15797col_2117_79868col_2117_79695col_2117_3308col_2117_3055openAccess
Tackling environmental issues in industrial ceramic sintering of sewage sludge: odors and gas emissions
Cremades Oliver, Lázaro Vicente
Soriano Ortiz, Cecilia
Cusidó Fàbregas, Joan Antoni
Universitat Politècnica de Catalunya. Departament d'Enginyeria de Projectes i de la Construcció
Universitat Politècnica de Catalunya. Departament de Física
Universitat Politècnica de Catalunya. GIIP - Grup de Recerca en Enginyeria de Projectes: Disseny i Sostenibilitat
Àrees temàtiques de la UPC::Enginyeria química
The inertization of sewage sludge in ceramic matrices to be used in structural or red ceramic material for buildings has proved to be a good case of reuse of waste material. However, its practical application has not yet been fully implemented in real-case scenarios, and environmental concern seems to be the main hurdle to overcome for its definitive massive approval by the building industry. In this contribution, air emissions related to the sintering of ceramic bricks made of mixtures of clay with some percentage of sewage sludge have been analyzed (in terms of gases, suspended particles and odors). Tests conducted during this work have shown higher VOC emissions in samples with some percentage of sludge in their composition (still under the regulated emission limit values), and some of them (mercaptans) are associated with odor nuisances. Besides, limit emissions values were exceeded by three inorganic pollutants (suspended particles, NOx and HCl). Measurements in an industrial scenario test showed a high variability in air pollution emissions, suggesting the need of in situ testing for definitive implementation. With the experience collected in this and several previous works in the area of emissions related to the production of added sewage sludge ceramic, some guidelines and recommendations are given to minimize the environmental impact of ceramic production plants implementing this particular waste revalorization process. Guidelines cover different aspects: workplace implementation of gas cleaning equipment; geographical context and local wind pattern analysis; monitoring of emission and immission levels; and information policy through social control participation procedures for reporting of nuisance episodes.
2017-05-24T07:16:21Z
2018-05-02T00:30:24Z
2017-05-02
Article
Cremades, L.V., Soriano, C., Cusido, J. Tackling environmental issues in industrial ceramic sintering of sewage sludge: odors and gas emissions. "Environment, Development and Sustainability", 2 Maig 2017, vol. 20, núm. 4, p. 1651-1663
1573-2975
http://hdl.handle.net/2117/104801
10.1007/s10668-017-9958-0
eng
https://link.springer.com/article/10.1007%2Fs10668-017-9958-0
http://creativecommons.org/licenses/by-nc-nd/3.0/es/
Open Access
Attribution-NonCommercial-NoDerivs 3.0 Spain
Springer Netherlands
oai:upcommons.upc.edu:2117/3287552020-09-20T10:26:09Zcom_2117_79680com_2117_28579com_2117_28577com_2117_3837com_2117_28581com_2117_15797col_2117_79868col_2117_3838col_2117_3055openAccess
Life Cycle Analysis of a Game-Based Solution for Domestic Energy Saving
Gangolells Solanellas, Marta
Casals Casanova, Miquel
Forcada Matheu, Núria
Macarulla Martí, Marcel
Universitat Politècnica de Catalunya. Departament d'Enginyeria de Projectes i de la Construcció
Universitat Politècnica de Catalunya. GRIC - Grup de Recerca i Innovació de la Construcció
ICT-based solutions are seen to be almost totally environmentally friendly, but game-based solutions for energy saving have not been explored yet. This paper describes a comprehensive analysis and an in-depth interpretation of the life cycle environmental impact of a game-based solution for domestic energy saving, developed and validated within the EU-funded Horizon 2020 project EnerGAware—Energy Game for Awareness of energy efficiency in social housing communities. Life cycle impacts were calculated with SimaPRO 8.5.2.0 using the ReCiPe 2016 v1.02 midpoint and endpoint methods and information contained within the Ecoinvent v3.4 database. Although the pre-competitive solution, directly arising from the research project, was found to have a relatively high environmental impact, its future exploitation, which mostly relies on existing infrastructure, was found to be highly competitive from an environmental perspective. The game will help reduce the life cycle impact of domestic energy consumption on damage to human health (3.68%), ecosystem quality (3.87%), and resource availability (4.81%). Most of the environmental impact of the market solution was found in the manufacturing phase (77.96–80.12%). Transport (8.86–7.57%), use (3.86–5.82%), and maintenance (7.24–7.54%) phases were found to contribute little to environmental impact. This research provides a useful reference for decision-making as it contributes to the environmental benchmarking of competing energy-saving strategies.
2020-09-15T11:47:20Z
2020-09-15T11:47:20Z
2020-08-19
Article
Gangolells, M. [et al.]. Life Cycle Analysis of a Game-Based Solution for Domestic Energy Saving. "Sustainability", 19 Agost 2020, vol. 12, núm. 17, p. 66:1-66:18.
2071-1050
http://hdl.handle.net/2117/328755
https://doi.org/10.3390/su12176699
eng
https://www.mdpi.com/2071-1050/12/17/6699
info:eu-repo/grantAgreement/EC/H2020/649673/EU/Energy Game for Awareness of energy efficiency in social housing communities/EnerGAware
http://creativecommons.org/licenses/by/3.0/es/
Open Access
Attribution 3.0 Spain
oai:upcommons.upc.edu:2117/4050612024-03-25T01:36:24Zcom_2117_79680com_2117_28579com_2117_28577com_2117_80518com_2117_23714com_2117_28578com_2117_15797col_2117_79868col_2117_80537col_2117_3055openAccess
CoCO2-MOSAIC 1.0: a global mosaic of regional, gridded, fossil, and biofuel CO2 emission inventories
Urraca Valle, Rubén
Janssens Maenhout, Greet
Álamos, Nicolás
Berna Peña, Lucas
Crippa, Monica
Darras, Sabine
Dellaert, Stijn
Denier Van der Gon, Hugo
Dowell, Mark
Guevara Vilardell, Marc
Universitat Politècnica de Catalunya. Departament d'Enginyeria de Projectes i de la Construcció
Barcelona Supercomputing Center
Àrees temàtiques de la UPC::Desenvolupament humà i sostenible::Enginyeria ambiental
Gridded bottom-up inventories of CO2 emissions are needed in global CO2 inversion schemes as priors to initialize transport models and as a complement to top-down estimates to identify the anthropogenic sources. Global inversions require gridded datasets almost in near-real time that are spatially and methodologically consistent at a global scale. This may result in a loss of more detailed information that can be assessed by using regional inventories because they are built with a greater level of detail including country-specific information and finer resolution data. With this aim, a global mosaic of regional, gridded CO2 emission inventories, hereafter referred to as CoCO2-MOSAIC 1.0, has been built in the framework of the CoCO2 project.
CoCO2-MOSAIC 1.0 provides gridded (0.1∘ × 0.1∘) monthly emissions fluxes of CO2 fossil fuel (CO2ff, long cycle) and CO2 biofuel (CO2bf, short cycle) for the years 2015–2018 disaggregated in seven sectors. The regional inventories integrated are CAMS-REG-GHG 5.1 (Europe), DACCIWA 2.0 (Africa), GEAA-AEI 3.0 (Argentina), INEMA 1.0 (Chile), REAS 3.2.1 (East, Southeast, and South Asia), and VULCAN 3.0 (USA). EDGAR 6.0, CAMS-GLOB-SHIP 3.1 and CAMS-GLOB-TEMPO 3.1 are used for gap-filling. CoCO2-MOSAIC 1.0 can be recommended as a global baseline emission inventory for 2015 which is regionally accepted as a reference, and as such we use the mosaic to inter-compare the most widely used global emission inventories: CAMS-GLOB-ANT 5.3, EDGAR 6.0, ODIAC v2020b, and CEDS v2020_04_24. CoCO2-MOSAIC 1.0 has the highest CO2ff (36.7 Gt) and CO2bf (5.9 Gt) emissions globally, particularly in the USA and Africa. Regional emissions generally have a higher seasonality representing better the local monthly profiles and are generally distributed over a higher number of pixels, due to the more detailed information available. All super-emitting pixels from regional inventories contain a power station (CoCO2 database), whereas several super-emitters from global inventories are likely incorrectly geolocated, which is likely because regional inventories provide large energy emitters as point sources including regional information on power plant locations. CoCO2-MOSAIC 1.0 is freely available at zenodo (https://doi.org/10.5281/zenodo.7092358; Urraca et al., 2023) and at the JRC Data Catalogue (https://data.jrc.ec.europa.eu/dataset/6c8f9148-ce09-4dca-a4d5-422fb3682389, last access: 15 May 2023; Urraca Valle et al., 2023).
2024-03-21T10:30:22Z
2024-03-21T10:30:22Z
2024-01-22
Article
Urraca, R. [et al.]. CoCO2-MOSAIC 1.0: a global mosaic of regional, gridded, fossil, and biofuel CO2 emission inventories. "Earth system science data", 22 Gener 2024, vol. 16, núm. 1, p. 501-523.
1866-3516
http://hdl.handle.net/2117/405061
10.5194/essd-16-501-2024
eng
https://essd.copernicus.org/articles/16/501/2024/
info:eu-repo/grantAgreement/EC/H2020/958927/EU/Prototype system for a Copernicus CO2 service/CoCO2
info:eu-repo/grantAgreement/EC/H2020/870301/EU/Air Quality: Worldwide Analysis and Forecasting of Atmospheric Composition for Health/AQ-WATCH
http://creativecommons.org/licenses/by/4.0/
Open Access
Attribution 4.0 International
Copernicus Office
oai:upcommons.upc.edu:2117/3708352022-07-22T12:00:01Zcom_2117_79680com_2117_28579com_2117_28577com_2117_3233com_2117_28581com_2117_15797col_2117_79868col_2117_3234col_2117_3055openAccess
Battery dismantling centre in Europe: A centralized vs decentralized analysis
Rallo Tolós, Héctor
Sánchez Ballesta, Anna
Canals Casals, Lluc
Amante García, Beatriz
Universitat Politècnica de Catalunya. Departament d'Enginyeria de Projectes i de la Construcció
Universitat Politècnica de Catalunya. GIIP - Grup de Recerca en Enginyeria de Projectes: Disseny i Sostenibilitat
Universitat Politècnica de Catalunya. ENMA - Enginyeria del Medi Ambient
At end-of-life, the battery of electric vehicles (EVs) must be properly managed at dedicated facilities to maximize reuse and recycling. Therefore, transportation entails major challenges, as they are not only heavy and big parts but are also classified as hazardous waste which makes transport expensive and highly regulated. As most of the batteries’ management facilities are located in the centre of Europe, this study assesses whether using a decentralised model to handle batteries from EVs is more sustainable and economical than using a centralised model where most of the EVs batteries are handled and prepared for a 2nd life usage or recycling in a bigger and unique facility in Europe. A feasibility analysis of installing a dismantling facility in Spain is done to compare it with the centralised option of sending the batteries to be handled in Germany. In the analysed scenarios, the costs of battery transportation from Spain to Germany are on average 200% higher compared to the cost of keeping these batteries in Spain. Moreover, most of the specialized facilities in the treatment of batteries are located in the centre of Europe leading to high logistical costs to the countries furthest away from such centres. This determines how logistics costs play a more important role when the economic viability of building one single big facility in contrast to having multiple smaller and spread facilities. In addition to all the economic advantages, a decentralised model has other advantages such as reducing CO2 emissions by reducing transport.
2022-07-21T12:13:34Z
2022-07-21T12:13:34Z
2022-11
Article
Rallo, H. [et al.]. Battery dismantling centre in Europe: A centralized vs decentralized analysis. "Resources, conservation & recycling advances", Novembre 2022, vol. 15, p. 200087:1-200087:12.
2667-3789
http://hdl.handle.net/2117/370835
10.1016/j.rcradv.2022.200087
eng
https://www.sciencedirect.com/science/article/pii/S2667378922000256
http://creativecommons.org/licenses/by-nc-nd/4.0/
Open Access
Attribution-NonCommercial-NoDerivatives 4.0 International
Elsevier
oai:upcommons.upc.edu:2117/4043782024-03-18T01:55:32Zcom_2117_79680com_2117_28579com_2117_28577com_2117_3929com_2117_184550com_2117_184544com_2117_184583com_2117_3233com_2117_28581com_2117_377305com_2117_3837com_2117_15797col_2117_79868col_2117_3930col_2117_184598col_2117_184716col_2117_3234col_2117_377318col_2117_3838col_2117_3055openAccess
The dilemma of variables assumptions in thermal comfort calculations for educational buildings: to simplify or not?
Ruiz de Alegría Sala, Alba
Marín López, Daniel
Canals Casals, Lluc
Fonollosa Magrinyà, Jordi
Macarulla Martí, Marcel
Universitat Politècnica de Catalunya. Doctorat en Enginyeria Ambiental
Universitat Politècnica de Catalunya. Doctorat en Enginyeria Biomèdica
Universitat Politècnica de Catalunya. Departament d'Enginyeria de Projectes i de la Construcció
Universitat Politècnica de Catalunya. Departament d'Enginyeria de Sistemes, Automàtica i Informàtica Industrial
Universitat Politècnica de Catalunya. ENMA - Enginyeria del Medi Ambient
Universitat Politècnica de Catalunya. TecSalut - Grup de Recerca en Tecnologies de la Salut
Universitat Politècnica de Catalunya. GRIC - Grup de Recerca i Innovació de la Construcció
Àrees temàtiques de la UPC::Edificació::Instal·lacions i acondicionament d'edificis::Instal·lacions de climatització
Thermal comfort is crucial for people well-being and productivity in buildings, and it has a strong effect on building’s energy usage. The main models for assessing thermal comfort, like predictive mean vote (PMV) and adaptive models, need many environmental measurements, making monitoring complex. That has sparked a debate: some advocate reducing the number of variables, while others stress sticking to the original models. This article evaluates current research trends and addresses the limitations of globe sensors, the most commonly used instrument for measuring mean radiant temperature. To address these is- sues, the study conducts a sensitivity analysis using latin hypercube sampling with multidimen- sional uniformity and employs data from 41 measurements conducted in educational buildings spanning different academic levels, from preschool to university. This analysis examines various simplifications in the measuring procedures for the PMV and adaptive models proposed by ASHRAE 55, ISO 7730 and EN 16798. For this purpose, two mean radiant temperature accuracies are used according to the minimum requirement and the desired value specified by ISO 7726, ±2 ¿C and ±0.2 ¿ C respectively. The results suggest that models with fewer variables tend to overestimate thermal comfort levels. However, this models are valid as their estimations fall within the uncertainty range of the complete model, as long as the mean radiant temperature accuracy is ±2 ¿C as achieved with globe sensors. When mean radiant temperature accuracy improves (i.e. ±0.2 ¿C), the outcome of the models with less variables imply an overestimation falling out of the uncertainty of the complete model.
2024-03-13T09:19:04Z
2024-03-13T09:19:04Z
2024-05
Article
Ruiz de Alegria, A. [et al.]. The dilemma of variables assumptions in thermal comfort calculations for educational buildings: to simplify or not? "Journal of building engineering", Maig 2024, vol. 84, núm. article 108404.
2352-7102
http://hdl.handle.net/2117/404378
10.1016/j.jobe.2023.108404
eng
https://www.sciencedirect.com/science/article/pii/S2352710223025871?via%3Dihub
info:eu-repo/grantAgreement/AEI/Plan Estatal de Investigación Científica y Técnica y de Innovación 2021-2023/PID2021-126845OB-C22/ES/SISTEMA MODULAR DE VENTILACION PARA EDIFICIOS EDUCATIVOS INTEGRADO CON LA PRODUCCION URBANA DE ALIMENTOS: INCREMENTAR LA EFICIENCIA ENERGETICA Y LA SOSTENIBILIDAD DEL EDIFICIO/
info:eu-repo/grantAgreement/AEI/Plan Estatal de Investigación Científica y Técnica y de Innovación 2021-2023/PID2021-122952OB-I00/ES/METODOS Y APLICACIONES DE APRENDIZAJE PROFUNDO Y SUPERFICIAL DE FENOTIPOS PARA ANALISIS Y PREDICCION DE DATOS BIOMEDICOS./
http://creativecommons.org/licenses/by-nc-nd/4.0/
Open Access
Attribution-NonCommercial-NoDerivatives 4.0 International
Elsevier
oai:upcommons.upc.edu:2117/3639772022-08-07T02:26:03Zcom_2117_79680com_2117_28579com_2117_28577com_2117_184550com_2117_184544com_2117_3837com_2117_28581com_2117_15797col_2117_79868col_2117_184598col_2117_3838col_2117_3055openAccess
Building-integrated greenhouses raise energy co-benefits through active ventilation systems
Muñoz Liesa, Joan
Royapoor, Mohammad
Cuerva Contreras, Eva
Gassó Domingo, Santiago
Gabarrell Durany, Xavier
Josa Garcia-Tornel, Alejandro
Universitat Politècnica de Catalunya. Doctorat en Enginyeria Ambiental
Universitat Politècnica de Catalunya. Departament d'Enginyeria de Projectes i de la Construcció
Universitat Politècnica de Catalunya. GRIC - Grup de Recerca i Innovació de la Construcció
Àrees temàtiques de la UPC::Desenvolupament humà i sostenible::Desenvolupament humà::Hàbitat
Àrees temàtiques de la UPC::Arquitectura::Arquitectura sostenible
Buildings and greenhouses consume vast amounts of energy and natural resources for heating and ventilation. It is still unclear how the synergetic effect of combining greenhouses and buildings' forced waste airflows could improve both systems' energy efficiency. This study quantified the energy recovery potential of exchanging airflows in a rooftop greenhouse (iRTG) integrated with an office building HVAC system in a Mediterranean climate. Using monitored and calibrated energy model data, the results showed that the iRTG can act as a solar collector and as a sink for a building's low-grade waste heat. The magnitude of harvested thermal energy that could be recirculated into the building by the integrated HVAC system was 205.2 kWh/m2y-1 and was limited by greenhouse low transmissivity (54%). The magnitude of building exhaust air was 198 kWh/m2y-1 at temperatures sufficient to heat and cool the iRTG. Compared to a passive ventilated configuration, the integration of active ventilation strategies doubled the energy benefits. Building ventilation requirements directly determined building and greenhouse waste flows and energy benefits, which increased by 63.1% when air changes per hour moved from 1.59 to 3.16. Overall, this demonstrates that greenhouse and building functionalities could be coupled to contribute to urban circularity and sustainability.
2022-03-11T18:17:13Z
2022-03-11T18:17:13Z
2022-01
Article
Muñoz-Liesa, J. [et al.]. Building-integrated greenhouses raise energy co-benefits through active ventilation systems. "Building and environment", 2022, vol. 208, p. 108585:1-108585:12.
0360-1323
http://hdl.handle.net/2117/363977
10.1016/j.buildenv.2021.108585
eng
https://www.sciencedirect.com/science/article/pii/S036013232100977X
https://creativecommons.org/licenses/by-nc-nd/4.0/
Open Access
© 2022. Elsevier
Attribution-NonCommercial-NoDerivatives 4.0 International
oai:upcommons.upc.edu:2117/1236012021-06-20T04:05:32Zcom_2117_79680com_2117_28579com_2117_28577com_2117_79679com_2117_3837com_2117_28581com_2117_15797col_2117_79868col_2117_79694col_2117_3838col_2117_3055openAccess
Facility managers’ perceptions on building performance assessment
Bortolini, Rafaela
Forcada Matheu, Núria
Universitat Politècnica de Catalunya. Departament d'Enginyeria Civil i Ambiental
Universitat Politècnica de Catalunya. Departament d'Enginyeria de Projectes i de la Construcció
Universitat Politècnica de Catalunya. GRIC - Grup de Recerca i Innovació de la Construcció
Àrees temàtiques de la UPC::Edificació::Gestió d'obres
During the operational phase, building performance may decrease in various areas, so that the end users’ requirements are no longer met. Consequently, indicators are useful to assessand improve the performance of existing buildings. In this study, we carried out a literature review and organized a focus group with facility management experts to gather and analyze facility managers’ perceptions on operational indicators that could be used to assess the performance of buildings. The results revealed that the core indicators used to measure a building’s operational performance are related to safety and assets working properly, health and comfort, space functionality, and energy performance. The findings also revealed that these indicators can be obtained from three sources: a) facility managers/operators, who carry out corrective maintenance and perform technical inspections, b) regular users, who report complaints and fill-in satisfaction questionnaires, and c) sporadic users, who also fill-in satisfaction questionnaires. These indicators and their sources can contribute to a better analysis of building performance and the definition of measures to improve performance during the operational phase of a building.
2018-11-06T11:57:49Z
2018-11-06T11:57:49Z
2018-05
Article
Bortolini, R., Forcada, N. Facility managers’ perceptions on building performance assessment. "Frontiers of Engineering Management", Maig 2018, vol. 5, núm. 3, p. 324-333.
2096-0255
https://www.researchgate.net/publication/326265005_Facility_managers'_perceptions_on_building_performance_assessment
http://hdl.handle.net/2117/123601
10.15302/J-FEM-2018010
eng
http://journal.hep.com.cn/fem/EN/10.15302/J-FEM-2018010
http://creativecommons.org/licenses/by/3.0/es/
Open Access
Attribution 3.0 Spain
oai:upcommons.upc.edu:2117/1125882020-07-23T20:52:11Zcom_2117_79680com_2117_28579com_2117_28577com_2117_3295com_2117_28581com_2117_15797col_2117_79868col_2117_3296col_2117_3055openAccess
Gamification in education: Designing course for game designers Gamificación en educación: Diseñando un curso para diseñadores de juegos
Contreras Espinoza, Ruth Sofia
Eguía Gómez, Jose Luis
Universitat Politècnica de Catalunya. Departament d'Enginyeria de Projectes i de la Construcció
Universitat Politècnica de Catalunya. GIE - Grup d'Informàtica a l'Enginyeria
Àrees temàtiques de la UPC::So, imatge i multimèdia
This article explores how gamification can be applied to education to improve student motivation. An experience developed in a game design course, in which experience points, levels, badges and challenges were included, is presented to this end. The study took place during 2014 and 2015. To assess how gamification impacted the learning experience, a survey and subsequent interviews with the students were applied. Results show significant improvement in terms of attention to reference materials and proactivity They also suggest that this approach can help students score better.
2018-01-10T12:56:14Z
2018-01-10T12:56:14Z
2017-07-01
Article
Contreras, R., Eguia, J. Gamification in education: Designing course for game designers Gamificación en educación: Diseñando un curso para diseñadores de juegos. "KEPES", 1 Juliol 2017, vol. 14, núm. 16, p. 91-120.
1794-711
http://hdl.handle.net/2117/112588
spa
http://kepes.ucaldas.edu.co/downloads/Revista16_5.pdf
http://creativecommons.org/licenses/by-nc-nd/3.0/es/
Open Access
Attribution-NonCommercial-NoDerivs 3.0 Spain
rdf///col_2117_79868/100