Browsing by Subject "Calor -- Transmissió"
Now showing items 1-20 of 64
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A conserved phase-field system based on the Maxwell–Cattaneo law
(2013-06-01)
Article
Restricted access - publisher's policyOur aim in this paper is to study a generalization of the conserved Caginalp phasefield system based on the Maxwell–Cattaneo law for heat conduction and endowed with Neumann boundary conditions. In particular, we obtain ... -
A level-set method for interfacial heat or mass transfer in two-phase flows
(International Centre for Numerical Methods in Engineering (CIMNE), 2018)
Conference lecture
Restricted access - publisher's policyA level-set model is proposed for simulating interfacial heat or mass transfer in two-phase flows. The Navier-Stokes equations as well as the heat transfer or mass transfer equations are discretized using a finite-volume ... -
Analysis and simulation of a thermosolar heating system using phase change material as the flowing fluid
(Universitat Politècnica de Catalunya / Politecnico di Torino, 2011)
Master thesis (pre-Bologna period)
Restricted access - author's decisionThe increasing gas emissions and the continuous rise of fuel prices are the main reasons why new solutions for world energy demand are searched. Using Europe as an indicator, every year more than thirty per cent of the oil ... -
Analysis of the geometric and radiative characteristics of hydrocarbon pool-fires
(2004-08-01)
Article
Restricted access - publisher's policyThe radiation intensity at a given distance depends mainly on the radiative power and the flame’s size and shape. Considerable literature describing both experimental and theoretical studies of thermal radiation from ... -
An immersed boundary method to conjugate heat transfer problems in complex geometries. Application to an automotive antenna
(2019-02-05)
Article
Restricted access - publisher's policyConsidering that the most common reason for electronic component failure is the excessive temperature level, an efficient thermal management design can prolong the operating life of the equipment, while also increasing its ... -
A one-phase Stefan problem with size-dependent thermal conductivity
(2018-07-02)
Article
Restricted access - publisher's policyIn this paper a one-phase Stefan problem with size-dependent thermal conductivity is analysed. Approximate solutions to the problem are found via perturbation and numerical methods, and compared to the Neumann solution for ... -
Aplicación de los métodos numéricos basados en volúmenes finitos para la resolución de problemas de mecánica de fluidos y sólidos termoelásticos
(Universitat Politècnica de Catalunya, 2013-10)
Master thesis (pre-Bologna period)
Open AccessEste proyecto representa una introducción al análisis numérico computacional para resolver problemas dinámicos con transferencia de calor en medios continuos. El objetivo es, en primer lugar, implementar un código orientado ... -
A suitable criterion for tube sizing in reverse cycle machines
(Universitat Politècnica de Catalunya / Université de Lorraine, 2011)
Master thesis (pre-Bologna period)
Open AccessTo find the optimal diameters for the connecting tubes in reverse cycle machines we use in this paper a new criterion that we have recently developed, the Ecological Cost, “EC" (Kheiri et al. 2011) EC includes the environmental ... -
Combined heat and moisture transfer in buildings systems
(2012)
Conference report
Restricted access - publisher's policyTemperature 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)
Bachelor thesis
Open Access
Covenantee: 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)
Conference report
Open AccessOpen 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 ... -
Concentrated solar in a fluidized bed
(Universitat Politècnica de Catalunya, 2017-09)
Master thesis
Open AccessThe 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)
Master thesis (pre-Bologna period)
Restricted access - author's decisionThe 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)
Conference report
Open AccessTo 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 ... -
Design of microdistillation device
(Universitat Politècnica de Catalunya, 2017-09)
Bachelor thesis
Open Access
Covenantee: 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 ... -
Direct numerical simulation of the turbulent natural convection flow in an open cavity of aspect ratio 4
(Begell House, 2012)
Conference report
Open AccessIn 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 ... -
Disseny de la refrigeració de LEDs d’alta potència mitjançant heat pipes
(Universitat Politècnica de Catalunya, 2012-06)
Master thesis (pre-Bologna period)
Open AccessEn el present projecte es realitza un disseny de refrigeració de LEDs d’alta potència mitjançant tecnologia heat pipe: un dispositiu que utilitza el canvi de fase d’un fluid que circula pel seu interior per transmetre ... -
Disseny d’un sistema de dissipació integrat i dessasistit per evitar sobreescalfaments en instal·lacions solars tèrmiques
(Universitat Politècnica de Catalunya, 2011-04)
Master thesis (pre-Bologna period)
Open AccessEn el següent document es tracta la problemàtica del sobreescalfament en les instal·lacions solars tèrmiques. Aquestes instal·lacions, degut a les condicions externes, han d’estar aprovisionats amb un sistema de dissipació ... -
Disseny i fabricació d'un intercanviador de calor
(Universitat Politècnica de Catalunya, 2014-01-08)
Bachelor thesis
Open AccessAquest projecte consisteix en el disseny i fabricació d‟un intercanviador de calor. S‟ha realitzat diversos càlculs tèrmics de diferents casos possibles amb el mètode de càlcul manual i mitjançant un programa de càlcul ... -
Estudi de millora de la nevera de transport de sang
(Universitat Politècnica de Catalunya, 2016-06)
Master thesis (pre-Bologna period)
Restricted access - confidentiality agreement
