Ara es mostren els items 1-15 de 15

    • Anàlisi i optimització d'un sistema d'intercanvi de calor per a ús industrial i residencial mitjançant eines de simulació CFD, CAD i CAE 

      Wiedemann Casas, Bruno (Universitat Politècnica de Catalunya, 2022-07-29)
      Treball Final de Grau
      Accés obert
      Realitzat a/amb:   Politecnico di Milano
      En aquest treball de tesi analitzarem i optimitzarem el flux d'aire en un intercanviador de calor industrial de l'empresa LuVe Group. En la tesi anterior a aquesta, es va modelar el comportament de l'intercanviador d'aire ...
    • Análisis de funcionamiento y optimización de un sistema de refrigeración para una planta de colorantes 

      Asprilla Lrgacha, Willinton Evangelista (Universitat Politècnica de Catalunya, 2011-01-12)
      Projecte/Treball Final de Carrera
      Accés obert
      L‘objectiu de d‘aquest projecte es avaluar el funcionament el funcionament, estat actual i proposar millores per la torre de refrigeració de tir induït de flux a contracorrent existent pel refredament de les aigües procedent ...
    • CO2LD: an educational innovation project for advanced vocational training in refrigeration 

      Cabello López, Ramon; Llopis Domenech, Rodrigo; Sánchez García-Vacas, Daniel; Torrella Alcaraz, Enrique; Patiño Pérez, Jorge (OmniaScience, 2013-12)
      Article
      Accés obert
      Refrigeration is one of the technology sectors that has suffered the most changes in the last twenty years, because of the negative impact of the fluids used in the refrigeration cycles, i.e., refrigerants, due to their ...
    • Diseño conceptual de un sistema de regulación de temperatura para bebidas 

      Delgado Cáceres, Laura (Universitat Politècnica de Catalunya, 2020-07-06)
      Treball Final de Grau
      Accés restringit per decisió de l'autor
      [ESP] Estudio y set up del sistema termoeléctrico para regular y mantener la temperatura de bebidas mediante la eliminación de calor, especialmente enfocado al vino y al cava. Así como realización de un estudio de la ...
    • Diseño de un sistema electrónico de control para láseres sintonizables por temperatura 

      Samarra Stehle, Christian (Universitat Politècnica de Catalunya, 2020-10)
      Treball Final de Grau
      Accés restringit per decisió de l'autor
      Laser technology has undergone significant advances in recent years, one of them being the development of tunable lasers, whose wavelength can be modified at will. These devices have applications in spectroscopy, interferometry, ...
    • Energy and exergy analysis of an absorption system with working pairs LiBr-H2O and Carrol-H2O at applications of cooling and heating 

      Zheng, Jian; Castro González, Jesús; Oliva Llena, Asensio; Oliet Casasayas, Carles (2021-12-01)
      Article
      Accés obert
      In this work, an air-cooled, single effect solar-driven absorption system is being evaluated from the point of view of 1 and 2 thermodynamic principles for two different applications: absorption chiller and heat pump. One ...
    • Numerical simulation of non-adiabatic capillary tubes. Special emphasis on the near-saturation zone 

      Ablanque Mejía, Nicolás; Oliet Casasayas, Carles; Rigola Serrano, Joaquim; Oliva Llena, Asensio (Elsevier, 2015-04-15)
      Article
      Accés obert
      The aim of this article is to present a distributed numerical model that simulates the thermal and fluid-dynamic phenomena inside non-adiabatic capillary tubes. The resolution approach is based on a two-phase flow model ...
    • Object-oriented simulation of reciprocating compressors: Numerical verification and experimental comparison 

      Mohan Damle, Rashmin; Rigola Serrano, Joaquim; Pérez Segarra, Carlos David; Castro González, Jesús; Oliva Llena, Asensio (2011-12-01)
      Article
      Accés restringit per política de l'editorial
      Numerical simulation of reciprocating compressors is important for the design, development, improvement and optimization of the elements constituting the compressor circuit. In this work, an object-oriented unstructured ...
    • Propuesta de mejora en la conformación de la caja de transmisión 

      Garrido Garcia, Sergio (Universitat Politècnica de Catalunya, 2021-10-29)
      Treball Final de Grau
      Accés restringit per decisió de l'autor
      Realitzat a/amb:   SEAT S.A.
      El present TFE presenta una proposta per a millorar la qualitat interna de la caixa de transmissió de SEAT Componentes aplicant la tecnologia de fabricació additiva. En el desenvolupament del treball es presenten conceptes ...
    • Reversible adiabatic temperature changes at the magnetocaloric and barocaloric effects in Fe49Rh51 

      Stern-Taulats, Enric; Gracia-Condal, Adrià; Planes Vila, Antoni; Lloveras Muntané, Pol Marcel; Barrio Casado, María del; Tamarit Mur, José Luis; Pramanick, Sabyasachi; Majumdar, Subham; Mañosa Carrera, Lluis (2015-10-12)
      Article
      Accés obert
      We report on the adiabatic temperature changes (Delta T) associated with the magnetocaloric and barocaloric effects in a Fe49Rh51 alloy, For the magnetocaloric effect, data derived from entropy curves are compared to direct ...
    • Sistema de control de termociclador para la diferenciación de células madre 

      Alonso Planas, Carla (Universitat Politècnica de Catalunya, 2016-06)
      Treball Final de Grau
      Accés obert
      Biotechnology and, in particular, tissue engineering based on the use of stem cells, have a great interest in the last years, although there is still a lack of knowledge about their niches, i.e., the physical and chemical ...
    • Tailoring barocaloric and magnetocaloric properties in low-hysteresis magnetic shape memory alloys 

      Stern Taulats, Enric; Planes Vila, Antoni; Lloveras Muntané, Pol Marcel; Tamarit Mur, José Luis; Barrio Casado, María del; Pramanick, Sabyasachi; Majumdar, Subham; Yuce, Suheyla; Emre, Baris; Frontera Beccaria, Carlos; Mañosa Carrera, Lluis (2015-09-01)
      Article
      Accés obert
      We report on the barocaloric and magnetocaloric effects in a series of low-hysteresis Ni-Mn-In magnetic shape memory alloys. We show that the behaviour exhibited by several quantities that characterise these caloric effects ...
    • Thermal and fluid dynamic study of cold storage 

      Ruiz Mansilla, Rafael; Montserrat Jordà, José; Quera Miró, Manuel; Mas de les Valls Ortiz, Elisabet; Ribé Torijano, Óscar (2014)
      Text en actes de congrés
      Accés restringit per política de l'editorial
      In any cold storage, it is common that the air distribution system generates some heterogeneity in the temperatures inside. Depending on the type of the product, the tolerance can be taken in more or less close and, beyond ...
    • Transient model for the development of an air-cooled LiBr-H2O absorption chiller based on heat and mass transfer empirical correlations 

      Castro González, Jesús; Farnós Baulenas, Joan; Papakokkinos, Giorgos; Zheng, Jian; Oliet Casasayas, Carles (Elsevier, 2020-12)
      Article
      Accés obert
      This work describes transient numerical modeling of a direct air-cooled,single-effect absorption chiller. The model is lumped parametric based on transient mass, momentum, and energy balances, applied to the internal ...
    • 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)
      Text en actes de congrés
      Accés restringit per política de l'editorial
      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 ...