Numerical investigations of heat transfer in phase change materials using non-equilibrium model

Yuan Tian, C.Y. Zhao

    Research output: Contribution to conferencePaperpeer-review

    42 Downloads (Pure)

    Abstract

    Phase change materials (PCMs) are drawing increasing attention of researchers nowadays, and they play a pivotal role in thermal energy storage (TES) used in renewable energy resources applications, since these renewable energy, such as solar energy, wind energy and tidal energy, are intermittent and not available at any time. However, most of PCMs suffer from low thermal conductivities prolonging the charging and discharging processes. Metal foams with relatively high thermal conductivities, are believed to be able to enhance heat transfer performance of PCMs for those applications. In this paper, a two-equation non-thermal equilibrium model has been employed to tackle the phase change heat transfer problem in PCMs composites embedded into metal foams. Numerical results show good agreement with experimental data, and indicate that a better heat transfer performance can be achieved by using the metal foams of smaller pore size and smaller porosity, and heat transfer performance of PCMs can be enhanced by up to 10 times by embedded metal foams into PCMs.
    Original languageEnglish
    Pages1-9
    Number of pages9
    Publication statusPublished - 2009
    Event11th UK National Heat Transfer Conf - London, United Kingdom
    Duration: 6 Sept 20098 Sept 2009

    Conference

    Conference11th UK National Heat Transfer Conf
    Country/TerritoryUnited Kingdom
    CityLondon
    Period6/09/098/09/09

    Keywords

    • Heat Transfer Enhancement
    • Phase Change Materials
    • metal foams
    • porosity
    • pore size
    • Two-equation Model
    • Non-thermal-equilibrium Model
    • charging process

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