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Performance of thermofluidic characteristics of recuperative wavy-plate heat exchangers

机译：恢复波形换热器热流体特性的性能

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摘要

The present work aims at investigating the influences of the geometric parameters of wavy plates on heat transfer and fluid flow characteristics of a recuperative wavy-plate heat exchanger numerically. The effects of the wavy amplitude, plate pitch, plate thickness, plate length, plate height, and wavelength on the thermofluidic characteristics are examined in the ranges from 0 mm to 10 mm, 5 mm to 15 mm, 0.5 mm to 2 mm, 500 mm to 3500 mm, 200 mm to 600 mm, and 25 mm to 200 mm, respectively. Air is utilized as working fluids for both the hot and cold sides, and the corresponding Reynolds number ranges from 700 to 8000. The present simulation method is first verified by a set of experimental data, followed by a high accurate meshing scheme to minimize the effect of the meshing on the simulation results. The 3D velocity, pressure, and temperature profiles are examined to describe the in-depth fluid flow and heat transfer behaviors in the wavy plate heat exchanger. The phenomena of fluid flow and heat transfer in the wavy plate heat exchanger are analyzed and discussed in detail. Correlations for predicting the Nusselt number and friction factor of the wavy plate heat exchanger are developed with the predictive capability of 98.09% for Nusselt number and 97. 38% for friction factor to be within a ± 10% deviation of the simulation results.
机译：本作者旨在研究马力板几何参数对数值恢复波形换热器的热传递和流体流动特性的影响。波浪幅度，板间距，板厚，板长度，板高度和波长对热流体特性的影响在0mm至10mm，5mm至15mm，0.5mm至2mm，500的范围内检查。 mm至3500 mm，200毫米至600 mm，分别为25 mm至200毫米。空气用作热侧和冷侧的工作流体，相应的雷诺数为700至8000.首先通过一组实验数据验证本发明的模拟方法，然后是高准确的啮合方案，以最小化效果仿真结果的啮合。检查3D速度，压力和温度型材，以描述波浪板热交换器中的深入流体流动和传热行为。分析和讨论了波形换热器中的流体流动和传热的现象和传热。用于预测波纹换热器的露珠数量和摩擦系数的相关性，采用果实数为98.09％的预测能力，97.38％，摩擦因子在仿真结果的偏差±10％内。

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  • 来源
    《International Journal of Heat and Mass Transfer》 |2021年第5期|121027.1-121027.18|共18页
  • 作者

    Ngoctan Tran; Jane-Sunn Liaw; Chi-Chuan Wang;

  • 作者单位

    Department of Mechanical Engineering National Yang Ming Chiao Tung University 1001 University Road Hsinchu 30010 Taiwan Department of Mechanical Engineering National Chiao Tung University 1001 University Road Hsinchu 300 Taiwan;

    Green Energy & Environment Research Laboratories Industrial Technology Research Institute Hsinchu 31040 Taiwan;

    Department of Mechanical Engineering National Yang Ming Chiao Tung University 1001 University Road Hsinchu 30010 Taiwan Department of Mechanical Engineering National Chiao Tung University 1001 University Road Hsinchu 300 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

    Wavy plate heat exchanger; Wavy plate correlations; Recuperative heat exchanger; Recuperator;

    机译：波浪板换热器;波浪板相关;恢复热交换器;恢复剂;

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