Exploració per tema "Calor -- Transmissió"
Ara es mostren els items 21-40 de 140
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Caracterització i simulació CFD-1D del procés d'evaporació en dipòsits de transport Heavy-Duty
(Universitat Politècnica de Catalunya, 2018-06-28)
Treball Final de Grau
Accés restringit per decisió de l'autorL’objectiu d’aquest treball és estudiar i caracteritzar el comportament del Gas Natural Liquat a l’interior del dipòsit de combustible d’un camió de transport Heavy-Duty quan aquest està estacionat. Quan el camió està ... -
CFD studies of the convective heat transfer coefficients and pressure drops in geometries applied to water cooling channels of the crotch absorbers of ALBA Synchrotron light source
(Universitat Politècnica de Catalunya, 2022-07-14)
Treball Final de Grau
Accés obertCurrently, the storage ring vacuum chambers of ALBA are protected by 156 crotch absorbers made of copper and Glidcop. After more than 10 years of operation as a third-generation light source, the ALBA II project arose, ... -
CFD Studies of the convective heat transfer coefficients and pressure drops in geometries applied to water cooling channels of the crotch absorbers of ALBA synchrotron light source
(2022)
Text en actes de congrés
Accés obertCurrently, the storage ring vacuum chambers of ALBA are protected by 156 crotch absorbers made of copper and Glidcop. After more than 10 years of operation as a thirdgeneration light source, the ALBA II project arose, ... -
Coalitional model predictive control of parabolic-trough solar collector fields with population-dynamics assistance
(2023-03-15)
Article
Accés obertParabolic-trough solar collector fields are large-scale systems, so the application of centralized optimizationbased control methods to these systems is often not suitable for real-time control. As such, this paper formulates ... -
Combined heat and moisture transfer in buildings systems
(2012)
Text en actes de congrés
Accés restringit per política de l'editorialTemperature and humidity are the two main parameters indicating the comfort level of the building occupants. Although the effect of temperature is taken into account in thermal simulation of buildings, the moisture transfer ... -
Comparison of drop evaporation models on hot surface
(Universitat Politècnica de Catalunya / Politecnico di Milano, 2014)
Treball Final de Grau
Accés obert
Realitzat a/amb: Politecnico di MilanoThis project is a study of how a sessile drop evaporates on a hot surface. Some existing models of droplet evaporation are explained, understood, simulated and compared. This project also provides an expression of drop ... -
Comparison of thermal performance of 3D printer liquefiers through finite element models
(2016)
Text en actes de congrés
Accés obertOpen source 3D printers have experienced an intense expansion during the last years, mainly because of their accessibility and the vast availability of information thanks to user communities. This fact presents researchers ... -
Computational Fluid Dynamics Studies in Heat and Mass Transfer Phenomena in Packed Bed Extraction and Reaction Equipment: Special Attention to Supercritical Fluids Technology
(Universitat Politècnica de Catalunya, 2007-03-01)
Tesi
Accés obertEl entendimiento de los fenómenos de transferencia de calor y de masa en medios porosos implica el estudio de modelos de transporte de fluidos en la fracción vacía del medio; este hecho es de fundamental importancia en ... -
Concentrated solar in a fluidized bed
(Universitat Politècnica de Catalunya, 2017-09)
Projecte Final de Màster Oficial
Accés obertThe aim of this thesis is to create a CFD model of a fluidized bed to study the heat transfer having concentrated solar as a heat source. First, some background about concentrated solar energy, a review of its actual ... -
Construction and optimization of a device for enhanced cooling
(Universitat Politècnica de Catalunya / Technishe Universität Darmstadt, 2009)
Projecte/Treball Final de Carrera
Accés restringit per decisió de l'autorThe development of faster processors for computer is depending at the moment on optimizing the heat removal. This is the motivation for the Center of Smart Interfaces to do research in this field. Cooling, using two phase ... -
Control of heat flux using computationally designed metamaterials
(2016)
Text en actes de congrés
Accés obertTo gain control over the diffusive heat flux in a given domain, one has to design metamaterials with a specifc distribution of the generally anisotropic thermal conductivity throughout the domain. Until now, the appropriate ... -
Coupled radiation and natural convection: Different approaches of the slw model for a non-gray gas mixture
(2007-09)
Article
Accés obertThe coupling between non-gray radiation heat transfer and convection–conduction heat transfer is studied. The spectral line weighted sum of gray gases model (SLW) is used to account for non-gray radiation properties. The ... -
Criterios numéricos en la resolución de la transferencia de calor en fenómenos de convección
(Universitat Politècnica de Catalunya, 1988-02-18)
Tesi
Accés obertLa finalidad de esta tesis es la obtención de las distribuciones de velocidades, presiones y temperaturas en la convección forzada de flujos compresibles en situaciones bidimensionales y de estabilización. Es a partir de ... -
Densification: A route towards enhanced thermal conductivity of epoxy composites
(Multidisciplinary Digital Publishing Institute (MDPI), 2021-01)
Article
Accés obertWhen an amorphous polymer is cooled under pressure from above its glass transition temperature to room temperature, and then the pressure is released, this results in a densified state of the glass. This procedure applied ... -
Design of microdistillation device
(Universitat Politècnica de Catalunya, 2017-09)
Treball Final de Grau
Accés obert
Realitzat a/amb: Technische Universität DarmstadtDuring the last decades, scientists had been widely attracted for microchemical processing technology, due to its efficient mass and energy transfer as well as the increased safety they provide. Microstructured devices ... -
Detailed analysis of the numerical resolution of the heat transfer and fluid flow governing equations
(Universitat Politècnica de Catalunya, 2019-09-30)
Treball Final de Grau
Accés restringit per decisió de l'autorPrimerament es proposen a l’estudiant uns casos bàsics d’integració de les equacions bàsiques de conservació de la massa, momentum i energia que li serviran per consolidar els seus coneixements en aquesta important temàtica ... -
Development of a code for the thermal simulation of spacecraft PCBs
(Universitat Politècnica de Catalunya, 2018-06)
Treball Final de Grau
Accés restringit per decisió de l'autor -
Development of a topology optimisation simulation tool for thermal management systems
(Universitat Politècnica de Catalunya, 2024-02-13)
Projecte Final de Màster Oficial
Accés obert
Realitzat a/amb: Università degli Studi di PadovaEls problemes de transferència de calor conjugada (CHT) tenen un paper crucial en la modelització i simulació de fenòmens de refrigeració en sistemes de gestió tèrmica, per exemple, per a vehicles elèctrics amb bateries. ... -
Development of experimental and numerical infrastructures for the study of compact heat exchangers and liquid overfeed refrigeration systems
(Universitat Politècnica de Catalunya, 2005-11-07)
Tesi
Accés obertSe ha desarrollado y construido una infraestructura experimental orientada a la validación de modelos de intercambiadores compactos de aletas y tubos y sistemas de refrigeración con sobrealimentación de líquido. El objetivo ... -
Direct numerical simulation of the turbulent natural convection flow in an open cavity of aspect ratio 4
(Begell House, 2012)
Text en actes de congrés
Accés obertIn this paper, three-dimensional turbulent natural convection heat transfer in an open cavity with an isothermal wall facing the overture has been studied. The aspect ratio chosen for the cavity has been 4 to complement the ...