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Enhancement of PCM melting in enclosures with horizontally-finned internal surfaces

机译：在具有水平鳍片内表面的外壳中增强PCM熔化

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摘要

A numerical model for simulating the melting of a phase change material (PCM) housed within an internally-finned metal enclosure is developed. A finite volume approach, utilizing the temperature-transforming model for phase change, is used to predict the conjugate heat transfer in the cavity walls and fins, as well as within the molten PCM. The influence of the number of fins, the fin length and thickness, and the hot wall temperature on the melting process is reported. With horizontal fins, rapid melting occurs during the early stages of the phase change, followed by a second, slow melting regime. Analytical correlations are developed that can be used to quickly estimate melting rates during both melting regimes, and it is shown that the predictions of the correlations are in good agreement with those of the detailed model.
机译：建立了一个模拟内部翅片金属外壳内相变材料（PCM）熔化的数值模型。利用温度转换模型进行相变的有限体积方法可用于预测腔壁和鳍片以及熔融PCM内部的共轭传热。报告了翅片数量，翅片长度和厚度以及热壁温度对熔融过程的影响。对于水平散热片，在相变的早期阶段会发生快速熔化，然后出现第二个缓慢熔化的过程。建立了可用于快速估计两种熔化方式下的熔化速率的分析相关性，结果表明，相关性的预测与详细模型的预测非常吻合。

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  • 来源
    《International Journal of Heat and Mass Transfer》 |2011年第20期|p.4182-4192|共11页
  • 作者

    Nourouddin Sharifi; Theodore L Bergman; Amir Faghri;

  • 作者单位

    Department of Mechanical Engineering, University of Connecticut, 191 Auditorium Road, Storrs, CT 06269-3139, USA;

    Department of Mechanical Engineering, University of Connecticut, 191 Auditorium Road, Storrs, CT 06269-3139, USA;

    Department of Mechanical Engineering, University of Connecticut, 191 Auditorium Road, Storrs, CT 06269-3139, USA;

  • 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

    phase change; melting; natural convection; fins;

    机译：相变熔化自然对流翅片;

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