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首页> 外文期刊>International Journal of Heat and Mass Transfer >Evaporative heat transfer model of a loop heat pipe with bidisperse wick structure
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Evaporative heat transfer model of a loop heat pipe with bidisperse wick structure

机译：具有双分散芯结构的回路热管的蒸发传热模型

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摘要

A mathematical model of evaporative heat transfer in a loop heat pipe was developed and compared with experiments. The steady-state thermal performance was predicted for different sintered nickel wicks, including monoporous and bidisperse structures. The effect of wick pore size distribution on heat transfer was taken into consideration. The wick in the evaporator was assumed to possess three regions during vaporization from an applied heat load: a vapor blanket, a two-phase region, and a saturated liquid region. The evaporator wall temperature and the total thermal resistance at different heat loads were predicted using ammonia as the working fluid. The predictions showed distinct heat transfer characteristics and higher performance for the bidisperse wick in contrast with monoporous wick. A bidisperse wick was able to decrease the thickness of the vapor blanket region, which presents a thermal resistance and causes lower heat transfer capacity of the evaporator. Additionally, a validation test presented good agreement with the experiments.
机译：建立了回路热管中蒸发传热的数学模型，并与实验进行了比较。预测了不同烧结镍芯的稳态热性能，包括单孔和双分散结构。考虑了灯芯孔径分布对传热的影响。假定蒸发器中的棉芯在施加热负荷的汽化过程中具有三个区域：蒸气覆盖层，两相区域和饱和液体区域。使用氨作为工作流体，预测了不同热负荷下的蒸发器壁温和总热阻。预测表明，与单孔芯相比，双分散芯具有明显的传热特性和更高的性能。双分散芯能够减小蒸气覆盖区域的厚度，这呈现出热阻并且导致蒸发器的较低的传热能力。此外，验证测试与实验结果吻合良好。

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  • 来源
    《International Journal of Heat and Mass Transfer》 |2011年第22期|p.4621-4629|共9页
  • 作者

    Fang-Chou Lin; Bing-Han Liu; Chi-Ting Huang; Yau-Ming Chen;

  • 作者单位

    Department of Mechanical Engineering. National Taiwan University, No. 1, Sec. 4, Roosevelt Road, Taipei City 10617, Taiwan;

    Department of Mechanical Engineering. National Taiwan University, No. 1, Sec. 4, Roosevelt Road, Taipei City 10617, Taiwan;

    Department of Mechanical Engineering. National Taiwan University, No. 1, Sec. 4, Roosevelt Road, Taipei City 10617, Taiwan;

    Department of Mechanical Engineering. National Taiwan University, No. 1, Sec. 4, Roosevelt Road, Taipei City 10617, Taiwan;

  • 收录信息 美国《科学引文索引》(SCI);美国《工程索引》(EI);
  • 原文格式 PDF
  • 正文语种 eng
  • 中图分类
  • 关键词

    loop heat pipe bidisperse wick biporous wick two-phase heat transfer;

    机译：回路热管双分散芯双孔芯两相传热;

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