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Feasibility of using multiport minichannel as thermosyphon for cooling of miniaturized electronic devices

机译：使用MultiPort MinioCannel作为热循环的可行性，用于冷却小型化电子设备

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摘要

The feasibility of using multiport minichannel (MPMC) as thermosyphon for cooling miniaturized electronic products is experimentally investigated with acetone as the working fluid. A detailed analysis on thermal performance and entropy generation due to heat transfer and pressure drop with the effects of heat load (10-50 W), filling ratio (FR; 40%, 50%, and 60%), and inclination angle (45°， 60°, and 90°) has been carried out. The results showed a reduction of 22.2% and 9.31% in thermal resistance and evaporator wall temperature at optimum filling ratio (OFR) of 50%. Reduction in entropy generation due to heat transfer and pressure drop of 16.6% and 12.3%, respectively, was observed at OFR. Internal fins in MPMC increase the surface area and evaporation rate by enhancing heat transfer leading to a decrease in the rate of entropy generation. Multiport increases surface tension of condensate at right angles to the flow direction along with the effects of gravity and enhancing rate of condensation. A new correlation is developed to predict evaporator wall temperature as a function of heat load and FR. The proposed correlation agrees well with a deviation of ±20% with present experimental results and also with the published literature. Thus, the obtained results will be useful in cooling miniaturized electronic devices.
机译：使用MultiPort MiniChann（MPMC）作为冷却小型化电子产品的热循环的可行性是通过丙酮作为工作流体的实验研究。具有热敏和压力下降引起的热性能和熵生成的详细分析（10-50瓦），填充率（FR; 40％，50％和60％）和倾斜角度（45已经进行了°，60°和90°）。结果表明，在最佳填充比（OFR）为50％时，热阻和蒸发器壁温度的降低22.2％和9.31％。在OFR，分别观察到由于传热和12.6％和12.3％的压力下降引起的熵产生。 MPMC中的内部鳍片通过增强热传递来增加表面积和蒸发速率，导致熵产生的速率降低。多端口随着重力的影响和缩合速度的影响，将冷凝物的表面张力提高到流动方向。开发了一种新的相关性以预测蒸发器壁温度作为热负荷和FR的函数。所提出的相关性与截至20％的偏差，目前的实验结果也与已发表的文献相同。因此，所得结果将可用于冷却小型化电子设备。

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  • 来源
    《Heat transfer》 |2020年第8期|4834-4856|共23页
  • 作者

    Stephen Manova; Lazarus Godson Asirvatham; Rajesh Nimmagadda; Jefferson Raja Bose; Somchai Wongwises;

  • 作者单位

    Department of Mechanical Engineering Karunya Institute of Technology and Sciences Coimbatore India;

    Department of Mechanical Engineering Karunya Institute of Technology and Sciences Coimbatore India;

    Center for Advanced Energy Studies Koneru Lakshmaiah Educational Foundation Vaddeswaram Andhra Pradesh India;

    Department of Mechanical Engineering Karunya Institute of Technology and Sciences Coimbatore India;

    Department of Mechanical Engineering Faculty of Engineering King Mongkut's University of Technology Thonburi (KMUTT) Bangkok Thailand National Science and Technology Development Agency (NSTDA) Pathum Thani Thailand;

  • 收录信息 美国《工程索引》(EI);
  • 原文格式 PDF
  • 正文语种 eng
  • 中图分类
  • 关键词

    entropy; minichannel; multiport; second law of thermodynamics; thermosyphon;

    机译：熵;Minio3Annel;多项目;热力学的第二律;热水脊柱;

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