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    Thermal Energy Discharging Performance of Metal Foam/Paraffin Composite Phase Change Material at Pore Scale

    Source: Journal of Thermal Science and Engineering Applications:;2021:;volume( 013 ):;issue: 005::page 051007-1
    Author:
    Yao, Yuanpeng
    ,
    Wu, Huiying
    DOI: 10.1115/1.4049752
    Publisher: The American Society of Mechanical Engineers (ASME)
    Abstract: In this research, thermal energy discharging performance of metal foam/paraffin composite phase change material (MFPC) is investigated at pore scale through direct simulation. A thermal transport model is first developed for heat discharging of MFPC by incorporating the involved effects of solidification phase transition, foam structure, and paraffin volume shrinkage. With this model, the detailed phase interface evolutions, temperature fields, and heat flux distributions of MFPC are numerically obtained and analyzed. It is found that once phase change heat discharging of MFPC begins, the solidification front of paraffin quickly forms and extends along the foam skeleton, which results in remarkably extended thermal transport interface to release latent heat as well as improved spatial synergy in phase change. The effect of local thermal nonequilibrium between porous metal foam and paraffin proves to be intrinsic and significant, providing an efficient inner driving force for enhancing latent heat discharging within MFPC. The overall energy discharging performance of MFPC unit is remarkably improved as compared with pure paraffin unit, evidenced by a large enhancement in latent heat release rate (more than three times) with only small reduction (2.6%) in heat capacity. Simultaneously, it is found that the paraffin-air interface for MFPC unit descends much faster than that for pure paraffin unit due to accelerated volume shrinkage of solidified paraffin within metal foam, resulting in a threefold enhancement in thermally driven dynamic response rate. This study can help more deeply understanding the energy discharging performance of MFPC and providing fundamental guidance for its application in miniaturized thermal systems.
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      Thermal Energy Discharging Performance of Metal Foam/Paraffin Composite Phase Change Material at Pore Scale

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    contributor authorYao, Yuanpeng
    contributor authorWu, Huiying
    date accessioned2022-02-05T22:05:45Z
    date available2022-02-05T22:05:45Z
    date copyright3/9/2021 12:00:00 AM
    date issued2021
    identifier issn1948-5085
    identifier othertsea_13_5_051007.pdf
    identifier urihttp://yetl.yabesh.ir/yetl1/handle/yetl/4276898
    description abstractIn this research, thermal energy discharging performance of metal foam/paraffin composite phase change material (MFPC) is investigated at pore scale through direct simulation. A thermal transport model is first developed for heat discharging of MFPC by incorporating the involved effects of solidification phase transition, foam structure, and paraffin volume shrinkage. With this model, the detailed phase interface evolutions, temperature fields, and heat flux distributions of MFPC are numerically obtained and analyzed. It is found that once phase change heat discharging of MFPC begins, the solidification front of paraffin quickly forms and extends along the foam skeleton, which results in remarkably extended thermal transport interface to release latent heat as well as improved spatial synergy in phase change. The effect of local thermal nonequilibrium between porous metal foam and paraffin proves to be intrinsic and significant, providing an efficient inner driving force for enhancing latent heat discharging within MFPC. The overall energy discharging performance of MFPC unit is remarkably improved as compared with pure paraffin unit, evidenced by a large enhancement in latent heat release rate (more than three times) with only small reduction (2.6%) in heat capacity. Simultaneously, it is found that the paraffin-air interface for MFPC unit descends much faster than that for pure paraffin unit due to accelerated volume shrinkage of solidified paraffin within metal foam, resulting in a threefold enhancement in thermally driven dynamic response rate. This study can help more deeply understanding the energy discharging performance of MFPC and providing fundamental guidance for its application in miniaturized thermal systems.
    publisherThe American Society of Mechanical Engineers (ASME)
    titleThermal Energy Discharging Performance of Metal Foam/Paraffin Composite Phase Change Material at Pore Scale
    typeJournal Paper
    journal volume13
    journal issue5
    journal titleJournal of Thermal Science and Engineering Applications
    identifier doi10.1115/1.4049752
    journal fristpage051007-1
    journal lastpage051007-12
    page12
    treeJournal of Thermal Science and Engineering Applications:;2021:;volume( 013 ):;issue: 005
    contenttypeFulltext
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    DSpace software copyright © 2002-2015  DuraSpace
    نرم افزار کتابخانه دیجیتال "دی اسپیس" فارسی شده توسط یابش برای کتابخانه های ایرانی | تماس با یابش
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