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Numerical investigation of conjugate heat transfer in a pillow-plate heat exchanger

机译：枕形换热器中共轭热传递的数值研究

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摘要

Pillow Plate Heat Exchangers (PPHX) are composed of several pillow plates arranged parallel to each other, with one flow path inside the plates (inner channel flow) and another in the spaces between adjacent plates (outer channel flow). In research studies published by now, the transport phenomena in these two flow paths have mostly been treated in a separate manner. Such a treatment does not permit to identify important effects, e.g., unfavourable thermal interaction between the inner and outer channel flow caused by predominant recirculation zones, or the influence of the material used for the pillow plate manufacturing. In this work, for the first time, conjugate heat transfer modelling and CFD-based simulations were carried out for a PPHX operated in countercurrent mode. This allowed a detailed analysis of the individual thermal resistances in a PPHX. Based on the results of this analysis, approaches for the correct calculation of these thermal resistances were created.
机译：枕头板热交换器（PPHX）由几个彼此平行布置的枕形板构成，在板内（内通道流）内部的一个流动路径，并且在相邻板之间的空间中（外部通道流）。在现在公布的研究中，这两个流动路径中的运输现象主要以单独的方式处理。这种治疗不允许识别重要效果，例如，由主要再循环区域引起的内和外部通道流之间的不利热相互作用，或者用于枕形制造的材料的影响。在这项工作中，首次进行共轭传热建模和基于CFD的模拟，以逆流模式操作的PPHX进行。这允许对PPHX中的各个热阻进行详细分析。基于该分析的结果，产生了正确计算这些热阻的方法。

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  • 来源
    《International Journal of Heat and Mass Transfer》 |2021年第2期|120567.1-120567.17|共17页
  • 作者

    A. Zibart; E.Y. Kenig;

  • 作者单位

    Fluid Process Engineering Paderborn University Pohlweg 55 Paderborn 33098 Germany;

    Chair of Fluid Process Engineering Paderborn University Pohlweg 55 Paderborn 33098 Germany Cubkin Russian State University of Oil and Gas Moscow Russian Federation;

  • 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

    Pillow plate; Conjugate heat transfer; CFD; Design methods;

    机译：枕头板;共轭传热;CFD;设计方法;

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