Now showing items 38308-38327 of 78617

  • Heat transfer analysis and numerical simulation of a parabolic trough solar collector 

    Amine Hachicha, Ahmed; Rodríguez Pérez, Ivette María; Capdevila Paramio, Roser; Oliva Llena, Asensio (2013-11-01)
    Article
    Open Access
    Parabolic trough solar collector is the most proven industry-scale solar generation technology today available. The thermal performance of such devices is of major interest for optimising the solar field output and increase ...
  • Heat transfer analysis with nanofluids in a closed two-phase thermosyphon loop 

    Rivera Jové, Anna (Universitat Politècnica de Catalunya / Kungliga Tecniska Högskolan, 2008)
    Master thesis (pre-Bologna period)
    Restricted access - confidentiality agreement
    This report is concerned about the comparative analysis of the boiling heat transfer behavior of different refrigerants and nanofluids. The experimental apparatus was a thermosyphon loop with an evaporator composed of ...
  • Heat transfer and fluid-dynamics in double and single skin facades 

    Faggembauu, Débora (Universitat Politècnica de Catalunya, 2006-12-19)
    Doctoral thesis
    Open Access
  • Heat transfer at the nanoscale : The hyperbolic heat equation 

    Irastorza Ugalde, Beñat (Universitat Politècnica de Catalunya, 2015-07)
    Bachelor thesis
    Open Access
    The interest of taking technology to increasingly small scales has required great changes and advances in science. In particular, the well-known Fourier's law (very useful in large scales) has proved to be not accurate ...
  • Heat Transfer Effects on a Fully Premixed Methane Impinging Flame 

    Mira, Daniel; Zavala, Miguel; Avila, Matías; Owen, Herbert; Cajas, Juan C.; Vázquez, Mariano; Houzeaux, Guillaume (Springer, 2016-01-09)
    Article
    Restricted access - publisher's policy
    A numerical assessment of different thermal conditions for an impinging flame configuration is investigated using large-eddy simulation. The cases of study correspond to a turbulent methane flame at equivalence ratio ER = ...
  • Heat transfer in polyolefin foams 

    Antunes, Marcelo de Sousa Pais; Velasco Perero, José Ignacio; Solórzano Quijano, Eusebio; Rodríguez-Pérez, Miguel Ángel (Springer, 2011)
    Part of book or chapter of book
    Restricted access - confidentiality agreement
    This chapter is dedicated to the study of heat transfer in polyolefin-based foams, particularly thermal conductivity, as a function of their structure and chemical composition. A small review of the main experimental ...
  • Heat transfer in polypropylene-based foams produced using different foaming processes 

    Antunes, Marcelo de Sousa Pais; Velasco Perero, José Ignacio; Redondo Realinho, Vera Cristina de; Martínez Velasco, Antonio Benito; Rodríguez-Pérez, Miguel Ángel; Saja, José Antonio de (2009-10)
    Article
    Restricted access - publisher's policy
    This paper presents the characterization of the cellular structure and thermal conduction behaviour of polypropylene foams produced using different foaming processes, with the aim of selecting the best possible PP foam ...
  • Heat transfer in shrink films 

    El Marrasse Zarioui, Salma (Universitat Politècnica de Catalunya, 2015-01)
    Bachelor thesis
    Restricted access - author's decision
    Polyethylene is a thermoplastic polymer composed of a repeating unit (-CH2-CH2)n. It is the most consumed plastic due to its low price and ease of manufacture. It can be described by three basic characteristics that influence ...
  • Heat Transfer of Mineral-Filled Polypropylene Foams 

    Antunes, Marcelo de Sousa Pais; Redondo Realinho, Vera Cristina de; Martínez Benasat, Antonio; Solórzano Quijano, Eusebio; Rodríguez-Pérez, Miguel Ángel; Velasco Perero, José Ignacio (2010)
    Article
    Restricted access - publisher's policy
    The thermal conductivity of unfilled polypropylene foams produced using different foaming processes has previously been demonstrated to be mainly affected by the foam’s bulk density [1]. The influence of adding inorganic ...
  • Heat treatments effect on the EN AC-46500 alloy produced by SSR 

    Campillo Betbese, Manel; Baile Puig, Maria Teresa; Martín Fuentes, Enrique; Forn Alonso, Antonio (2008-01)
    Article
    Open Access
    This work demonstrates the possibility to apply T5 and T6 heat treatments to EN AC-46500 aluminium components conformed by Semi-Solid Rheocasting (SSR). The study of temperature and time effect in annealing, tempering ...
  • Heating and Cooling Systems in Building – Air Vs. water 

    Boleda Molas, Anna Maria (Universitat Politècnica de Catalunya, 2012)
    Master thesis (pre-Bologna period)
    Restricted access - author's decision
    This project compares the performance of two different heating and cooling systems. These two systems are a water based system, which is mainly based on Thermally Activated Building Systems (TABS), and an air based system, ...
  • Heating bulk ions in DEMO with ICRF waves 

    Gallart, Dani; Mantsinen, Mervi; Kazakov, Yevgen (Barcelona Supercomputing Center, 2015-05-05)
    Conference report
    Open Access
    Ion cyclotron resonance frequency heating (ICRF) is one of the auxiliary heating schemes presently envisaged for ITER and DEMO. In this paper we analyse the potential of ICRF waves to heat the fuel ions in DEMO. Our ...
  • Heating model based decision support during a cooling shutdown in Data Center 

    García Just, Ana (Universitat Politècnica de Catalunya / École Nationale Supérieure de Mécanique et des Microtechniques de Besançon, 2013)
    Master thesis (pre-Bologna period)
    Restricted access - author's decision
  • Heating of a tissue by near nield exposure to a dipole: a model analysis 

    Riu Costa, Pere Joan; Foster, Kenneth R. (IEEE-INST ELECTRICAL ELECTRONICS ENGINEERS INC, 1999-08-31)
    Article
    Open Access
    We report a numerical study of the induced electric fields and specific absorption rate (SAR) produced by microwave radiation from a half-wavelength dipole near tissue models, and the resulting transient and steady-state ...
  • Heating of saturated porous media in practice: several causes of local thermal non-equilibrium 

    Virto Albert, Luis; Carbonell Ventura, Montserrat; Castilla López, Roberto; Gámez Montero, Pedro Javier (2009-11)
    Article
    Restricted access - publisher's policy
    In recent years the industrial applications of porous materials has shown a growing relevance. Most of the technological thermal processes in porous media involve time-dependent thermal conditions. Therefore, the temperature ...
  • Heating pulse tests under constant volume on natural Boom clay 

    Lima, Analice; Romero Morales, Enrique Edgar; Gens Solé, Antonio; Muñoz, Juan Jorge; Li, X.L. (2009)
    Conference report
    Restricted access - publisher's policy
    Boom clay formation is a potential natural host rock for geological disposal of High Level Nuclear Waste in Belgium. Heating pulse tests with controlled power supply (maximum temperature was limited to 85ºC) and controlled ...
  • Heating pulse tests under constant volume on natural Boom clay. Experimental results and numerical simulations 

    Lima, Analice; Romero Morales, Enrique Edgar; Vaunat, Jean; Gens Solé, Antonio; Li, X.L. (2009)
    Conference report
    Open Access
    Boom clay is a potential geological host formation for High Level Nuclear Waste in Belgium. Impact of thermal loads may play an important role on this clay formation. To this aim, heating pulse tests on intact borehole ...
  • Heating pulse tests under constant volumen on natural Boom clay. 

    Lima, Analice; Romero Morales, Enrique Edgar; Gens Solé, Antonio; Muñoz, Juan Jorge; Li, Xiangling (Science Press, 2010-08-20)
    Article
    Open Access
    Boom clay formation is a potential natural host rock for geological disposal of high-level nuclear waste in Belgium. Heating pulse tests with controlled power supply (maximum temperature was limited to 85°C) and controlled ...
  • Heave of a railway bridge induced by gypsum crystal growth: field observations 

    Alonso Pérez de Agreda, Eduardo; Ramon Tarragona, Anna (2013-07)
    Article
    Restricted access - publisher's policy
    The central pillars of a bridge belonging to a recently built high-speed railway line experienced an unexpected and continuous heave after the end of construction. Pillars were founded on 3 × 3 pile groups capped by a rigid ...
  • Heave of a railway bridge: modelling gypsum crystal growth 

    Ramon Tarragona, Anna; Alonso Pérez de Agreda, Eduardo (2013-01)
    Article
    Restricted access - publisher's policy
    The heave of the central pillars of a railway bridge, founded on large-diameter bored piles, is a consequence of gypsum crystal growth in an anhydritic claystone stratum underlying the tip of the piles. The heave mechanism ...