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首页> 外文学位 >Experimental Study on Heat Transfer and Flow Characteristics of Air Cooling through Cross-flow Microchannel Heat Exchanger.
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Experimental Study on Heat Transfer and Flow Characteristics of Air Cooling through Cross-flow Microchannel Heat Exchanger.

机译：横流微通道换热器空冷传热及流动特性的实验研究。

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摘要

Air-side heat transfer and flow characteristics were studied through an air-to-deionized water cross-flow serpentine microchannel heat exchanger during air cooling. In the single phase, twenty distinct operating conditions were maintained within the range of air and deionized water-side Reynolds number 283 ≤ Rea ≤ 1384 and 105 ≤ Rew ≤ 159 respectively, retaining the constant inlet temperatures of both fluids (Ta,i = 38 +/-0.5°C and Tw,i = 9 +/-0.5°C). Heat transfer and fluid flow key parameters were evaluated from experimental data. Heat balance performance was observed within 4% throughout the experiment, and major thermal resistance was found in the air-side, ranging from 89% - 94% of overall thermal resistance. The effects of Rew and Re a on air-side Nusselt number (Nua), Colburn factor (j a), friction factor (fa), and other parameters were examined, and general correlations were achieved. The Nua-Rea-Pr a relationship of the current study is compared to other correlations, and several recommendations are proposed.
机译：在空气冷却期间，通过空气-去离子水横流蛇形微通道换热器研究了空气侧的传热和流动特性。在单相中，在空气和去离子水侧雷诺数分别为283≤Rea≤1384和105≤Rew≤159的范围内，保持了二十种不同的运行条件，从而保持了两种流体的恒定入口温度（Ta，i = 38 +/- 0.5°C和Tw，i = 9 +/- 0.5°C）。从实验数据评估了传热和流体流量关键参数。在整个实验中，观察到热平衡性能在4％以内，而在空气侧发现了较大的热阻，占总热阻的89％-94％。研究了Rew和Re a对空气侧Nusselt值（Nua），Colburn因子（ja），摩擦因子（fa）和其他参数的影响，并获得了一般的相关性。将本研究的Nua-Rea-Pr a关系与其他相关性进行比较，并提出了一些建议。

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  • 作者

    Dasgupta, Engr Sarbadaman.;

  • 作者单位

    University of Windsor (Canada).;

  • 授予单位 University of Windsor (Canada).;
  • 学科 Engineering Mechanical.
  • 学位 M.A.Sc.
  • 年度 2011
  • 页码 135 p.
  • 总页数 135
  • 原文格式 PDF
  • 正文语种 eng
  • 中图分类
  • 关键词

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