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首页> 外文期刊>Journal of Heat Transfer >Experimental Investigation of the Heat Transfer Performance of a Hybrid Cooling Fin Thermosyphon
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Experimental Investigation of the Heat Transfer Performance of a Hybrid Cooling Fin Thermosyphon

机译：混合冷却翅片热虹吸管传热性能的实验研究

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摘要

The effect of fill volume on the heat transfer performance of a hybrid cooling fin thermosyphon, characterized by an airfoil cross-sectional shape and a slot-shaped cavity, is investigated. The performance was examined at three fill volumes, expressed as a percentage of the evaporator section: 0%, 60%, and 240%. These were chosen to represent three distinct regimes: unfilled, filled, and overfilled evaporator sections, respectively. The cross section of this copper-water thermosyphon has a NACA0010 shape with a chord length of 63.5 mm and an aspect ratio (ratio of the length of the evaporator section to the cavity width) of 1.109. The evaporator length comprises 8.3% of the total thermosyphon length. The air-cooled condenser section was placed in a uniform airflow in the test section of an open return wind tunnel. The rate of heat transfer, or performance, was measured as a function of fill volume and evaporator temperature. The heat transfer performance increased by 100-170% by adding 0.86 ml of working fluid (de-ionized water), i.e., when the fill volume increased from 0% to 60%, which illustrates the improvement of a cooling fin's heat transfer rate by converting it to a hybrid cooling fin thermosyphon. Of the fill volumes investigated, the thermosyphon achieves a maximum heat transfer rate and highest average surface temperature at the 60% fill volume. Overfilling the evaporator section at 240% fill results in a slight decrease in performance from the 60% fill volume. The results of this study demonstrate the feasibility of hybridizing a cooline fin to act both as a cooling fin and a thermosyphon.
机译：研究了填充量对以翼型截面形状和狭缝形腔为特征的混合冷却翅片热虹吸管传热性能的影响。在三个填充体积下检查性能，以蒸发器部分的百分比表示：0％，60％和240％。选择这些代表三种不同的状态：分别为未填充，已填充和过度填充的蒸发器部分。该铜水热虹吸管的横截面为NACA0010形状，其弦长为63.5mm，并且纵横比（蒸发器部分的长度与腔体宽度的比率）为1.109。蒸发器长度占总热虹吸管长度的8.3％。将空气冷却的冷凝器部分以均匀的气流放置在开放式返回风洞的测试部分中。根据填充量和蒸发器温度来测量传热速率或性能。通过添加0.86 ml的工作流体（去离子水），即当填充量从0％增加到60％时，传热性能提高了100-170％，这说明散热片的传热速率提高了25％。将其转换为混合散热片热虹吸管。在所研究的填充体积中，热虹吸管在60％的填充体积下实现了最大的传热速率和最高的平均表面温度。蒸发器部分以240％的填充量过量填充会导致性能从60％的填充量略有下降。这项研究的结果表明，杂交冷却鳍片既可以用作冷却鳍片也可以用作热虹吸管。

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  • 来源
    《Journal of Heat Transfer》 |2014年第10期|104502.1-104502.5|共5页
  • 作者

    Christina A. Pappas; Donald A. Jordan; Pamela M. Norris;

  • 作者单位

    Department of Mechanical and Aerospace Engineering,University of Virginia,122 Engineer's Way,Charlottesville, VA 22904;

    Department of Mechanical and Aerospace Engineering,University of Virginia,122 Engineer's Way,Charlottesville, VA 22904;

    Fellow ASME Department of Mechanical and Aerospace Engineering, University of Virginia, 122 Engineer's Way,Charlottesville, VA 22904;

  • 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

    thermosyphon; cooling fin; airfoil; fill volume; small aspect ratio;

    机译：热虹吸管散热片翼型;填充量长宽比小;

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