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Ara es mostren els items 136-153 de 153

    • Techno-economic performance evaluation of solar tower plants with integrated multilayered PCM thermocline thermal energy storage: a comparative study to conventional two-tank storage systems 

      Guedéz, Rafael; Ferruzza, Davide; Arnaudo, Monica; Rodríguez Pérez, Ivette María; Pérez Segarra, Carlos David; Hassar, Zhor; Laumert, Björn (American Institute of Physics (AIP), 2015)
      Text en actes de congrés
      Accés obert
      Solar Tower Power Plants with thermal energy storage are a promising technology for dispatchable renewable energy in the near future. Storage integration makes possible to shift the electricity production to more profitable ...

    • Techno-economic performance evaluation of solar tower plants with integrated multilayered PCM thermocline thermal energy storage: a comparative study to conventional two-tank storage systems 

      Guedéz, Rafael; Ferruzza, Davide; Arnaudo, Monica; Rodríguez Pérez, Ivette María; Pérez Segarra, Carlos David; Hassar, Zhor; Laumert, Björn (2016)
      Article
      Accés obert
      Solar Tower Power Plants with thermal energy storage are a promising technology for dispatchable renewable energy in the near future. Storage integration makes possible to shift the electricity production to more profitable ...

    • TERMOTÈCNIA (Examen 1r Quadr.) 

      Pérez Segarra, Carlos David (Universitat Politècnica de Catalunya, 2004-01-08)
      Examen
      Accés restringit a la comunitat UPC

    • Thermal and thermochemicalenergy storage: bridging the gap between the virtual classroom and the face-to-face attendance 

      Rodríguez Pérez, Ivette María; Rigola Serrano, Joaquim; Castro González, Jesús; Pérez Segarra, Carlos David; Oliva Llena, Asensio (Universitat Politècnica de Catalunya. Institut de Ciències de l'Educació, 2013-06)
      Comunicació de congrés
      Accés obert
      Thermal and thermochemicalenergy storage is a course offered within the Master's degree in Energy Engineering and the KIC InnoenergyRenEMaster. This course is not only targeted to face-to-face attendees but also to students ...

    • Thermal System Oriented Simulation of Aircraft Electrical Environmental Control Systems Including its Electric Coupling 

      Ablanque Mejía, Nicolás; Torras Ortiz, Santiago; Oliet Casasayas, Carles; Rigola Serrano, Joaquim; Pérez Segarra, Carlos David (European Conference for AeroSpace Sciences (EUCASS), 2019)
      Text en actes de congrés
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      A flexible numerical platform based on libraries has been developed within the Dymola/Modelica framework to simulate Environmental Control Systems (ECS). The goal was to build up a flexible tool to analyse complex systems ...

    • Thermo-mechanical parametric analysis of packed-bed thermocline energy storage tanks 

      González Acedo, Ignacio; Pérez Segarra, Carlos David; Lehmkuhl Barba, Oriol; Torras Ortiz, Santiago; Oliva Llena, Asensio (2016-10-01)
      Article
      Accés obert
      A packed-bed thermocline tank represents a proved cheaper thermal energy storage for concentrated solar power plants compared with the commonly-built two-tank system. However, its implementation has been stopped mainly due ...

    • Towards a direct numerical simulation of a lifted CH4-air diffusion flame 

      Ventosa Molina, Jordi; Lehmkuhl Barba, Oriol; Pérez Segarra, Carlos David; Oliva Llena, Asensio (Begell House, 2015)
      Text en actes de congrés
      Accés restringit per política de l'editorial
      The near field jet of a self-igniting methane-air diffusion jet flame is studied by means of Direct Numerical Simulation (DNS) and a Flamelet/Progress-Variable (FPV) model to include detailed chemistry. Hence, all flow and ...

    • Transient response in small capacity vapour compression systems. Experimental data and numerical approach 

      Ablanque Mejía, Nicolás; Rigola Serrano, Joaquim; Oliet Casasayas, Carles; Pérez Segarra, Carlos David (2011)
      Comunicació de congrés
      Accés restringit per política de l'editorial
      The aim of this work is to introduce a numerical approach to study the transient response of vapour compression refrigerating systems. The emphasis is put on small capacity systems working with R600a (power consumption ...

    • Transient Thermal Management of Vapor Cycles to Simulate Aircraft Electrical Environment Control Systems 

      Ablanque Mejía, Nicolás; Torras Ortiz, Santiago; Oliet Casasayas, Carles; Rigola Serrano, Joaquim; Pérez Segarra, Carlos David (International Institute of Refrigeration, 2019)
      Comunicació de congrés
      Accés restringit per política de l'editorial
      A Modelica library has been developed to simulate both transient and steady state of vapor cycle systems (VCS) integrated within Electrical Environment Control Systems (E-ECS) architectures applied in the thermal management ...

    • Turbulence modelling and numerical issues: from RANS to DNS and LES 

      Pérez Segarra, Carlos David; Lehmkuhl Barba, Oriol; Jaramillo Ibarra, Julian Ernesto; Colomer Rey, Guillem; Oliva Llena, Asensio (2009)
      Comunicació de congrés
      Accés restringit per política de l'editorial
      The objective of this work is to show possibilities and limitations of different turbulence models from RANS to DNS and LES. Firstly, standard approaches based on time averaging the governing equations (the so called ...

    • Turbulent natural convection in a differentially heated cavity of aspect ratio 5 filled with non-participating and participating grey media 

      Capdevila Paramio, Roser; Lehmkuhl Barba, Oriol; Trias Miquel, Francesc Xavier; Pérez Segarra, Carlos David; Colomer Rey, Guillem (2011)
      Comunicació de congrés
      Accés restringit per política de l'editorial
      In the present work, turbulent natural convection in a tall differentially heated cavity of aspect ratio 5:1, filled with air (Pr = 0.7) under a Rayleigh number based on the height of 4.5 centerdot 1010, is studied ...

    • Turbulent radial outflow between coaxial parallel disks 

      Rigola Serrano, Joaquim; Lehmkuhl Barba, Oriol; Pérez Segarra, Carlos David; Colomer Rey, Guillem (2009)
      Comunicació de congrés
      Accés restringit per política de l'editorial
      A numerical simulation of the radial outflow between two parallel concentric disks has been carried out by means of the numerical resolution of the Navier-Stokes and continuity equations in a three dimensional unstructured ...

    • Unstructured 3D numerical modeling of the melting of a PCM contained in a spherical capsule 

      Galione Klot, Pedro Andrés; Lehmkuhl Barba, Oriol; Rigola Serrano, Joaquim; Pérez Segarra, Carlos David; Oliva Llena, Asensio (International Association for Computational Mechanics (IACM), 2014)
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    • Use of a Low-Mach model on a CFD&HT solver for the elements of an object oriented program to numerically simulate hermetic refrigeration compressors 

      López Mas, Joan; Lehmkuhl Barba, Oriol; Rigola Serrano, Joaquim; Pérez Segarra, Carlos David (2012)
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      A powerful object oriented approach for the simulation of generic thermal systems (Damle et al., 2008) is used as a framework to numerically simulate the thermal and fluid behavior of hermetic reciprocating compressors. A ...

    • Vapor Compression System Modelica Library for Aircraft ECS 

      Ablanque Mejía, Nicolás; Torras Ortiz, Santiago; Oliet Casasayas, Carles; Rigola Serrano, Joaquim; Pérez Segarra, Carlos David (Purdue University, 2018)
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      This work presents a Modelica library aimed to simulate vapor compression systems at both steady and transient conditions. The simulation of these specific systems is particularly challenging ...

    • Vapour compression cycle modelling for use within large thermal systems 

      Ablanque Mejía, Nicolás; Torras Ortiz, Santiago; Oliet Casasayas, Carles; Rigola Serrano, Joaquim; Pérez Segarra, Carlos David (International Institute of Refrigeration, 2023)
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      A dynamic model of a Vapour Compression System (VCS) has been developed under the Modelica/Dymola platform aiming at three specific goals: numerical robustness, low resolution time, and accurate predictions. The aforementioned ...

    • Virtual household refrigerators at steady-state and transient conditions. Numerical model and experimental validation 

      Ablanque Mejía, Nicolás; Oliet Casasayas, Carles; Rigola Serrano, Joaquim; Pérez Segarra, Carlos David (Purdue University, 2016)
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      The current status of a flexible numerical model for vapor compression refrigeration systems for steady state and transient conditions is presented. The model simulates both the refrigeration cycle itself and the refrigerated ...

    • Waste heat and water recovery for an industrial dryer by employing an absorption heat pump 

      Papakokkinos, Giorgos; Castro González, Jesús; Rigola Serrano, Joaquim; Pérez Segarra, Carlos David; Oliet Casasayas, Carles (International Institute of Refrigeration, 2023)
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      This study elaborates the incorporation of thermally-driven absorption heat pumps (AbHP) in industrial dryers for waste heat recovery purposes. The waste heat stream – hot humid air that would otherwise be rejected – ...