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Theoretical prediction of longitudinal heat conduction effect in cross-corrugated heat exchanger

机译:交叉波纹换热器纵向传热效果的理论预测

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摘要

In the elementary heat exchanger design theory, the longitudinal heat conduction through the heat transfer plate separating hot and cold fluid streams is neglected, and only the transverse heat conduction is taken into account for the conjugate heat transfer problem. In the cross-corrugated heat exchanger, the corrugated primary surface naturally leads to the highly non-uniform convective heat transfer coefficient distribution on opposite sides of the plate. In such a case, the longitudinal heat conduction may play a significant role in the thermal coupling between high heat transfer regions located on opposite sides of the plate. In the present study CFD is used to perform a quantitative assessment of the thermal performance of a cross-corrugated heat exchanger including the longitudinal heat conduction effect for various design options such as different plate thickness and corrugation geometry for a typical operating condition. The longitudinal heat conduction effect is then predicted by the theoretical method using the' network-of-resistance' in the wide range of the heat exchanger design space.
机译:在基本换热器设计理论中,忽略了将热流体和冷流体分开的通过传热板的纵向传热,而共轭传热问题只考虑了横向传热。在交叉波纹热交换器中,波纹主表面自然导致在板的相对侧上高度不均匀的对流传热系数分布。在这种情况下,纵向热传导在位于板的相对侧上的高热传递区域之间的热耦合中可以起重要作用。在本研究中,CFD用于对交叉波纹热交换器的热性能进行定量评估,包括各种设计选项(例如,典型工作条件下的不同板厚和波纹几何形状)的纵向导热效果。然后,通过理论方法使用“电阻网络”在热交换器设计空间的广阔范围内预测纵向热传导效果。

著录项

  • 来源
    《International Journal of Heat and Mass Transfer》 |2012年第16期|p.4129-4138|共10页
  • 作者单位

    School of Mechanical Engineering, Pusan National University, San 30, Jangjeon-dong, Ceumjeong-gu, Busan 609-735, Republic of Korea;

    School of Mechanical Engineering, Pusan National University, San 30, Jangjeon-dong, Ceumjeong-gu, Busan 609-735, Republic of Korea;

    Rolls-Royce and Pusan National University Technology Centre in Thermal Management, Pusan National University, San 30, Jangjeon-dong, Ceumjeong-gu, Busan 609-735, Republic of Korea;

    Strategic Research Centre, Rolls-Royce pic, P.O. Box 31, Derby DE24 8BJ, United Kingdom;

    Strategic Research Centre, Rolls-Royce pic, P.O. Box 31, Derby DE24 8BJ, United Kingdom;

    School of Mechanical Engineering, Pusan National University, San 30, Jangjeon-dong, Ceumjeong-gu, Busan 609-735, Republic of Korea;

  • 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

    longitudinal heat conduction; conjugate heat transfer; cross-corrugated heat exchanger;

    机译:纵向导热;共轭传热交叉波纹热交换器;

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