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首页> 外文期刊>International Journal of Heat and Mass Transfer >Heat transfer investigation of a flat-plate oscillating heat pipe with tandem dual channels under nonuniform heating
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Heat transfer investigation of a flat-plate oscillating heat pipe with tandem dual channels under nonuniform heating

机译：平板振荡热管在非均匀加热下用串联双通道进行传热研究

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摘要

To provide cooling of electronics under nonuniform heating from multiple heat sources, a novel tandem dual-channel flat-plate oscillating heat pipe (OHP) is tailored and experimentally studied with a "center-multiple-heat-source nonuniform heating and two-end air cooling" layout under different inclination angles, heat loads and nonuniform heating levels. Flow pattern diagrams together with thermal resistance contour maps are organized for two tandem mirror-symmetric halves of the flat-plate OHP, and the thermal performance differences under nonuniform and uniform heating are compared. It is indicated that, compared with uniform heating, nonuniform heating produces better thermohydrodynamic performance at a low heat load with quasi-steady "stop-oscillation" fluid motion in the flat-plate OHP, while it results in poorer thermohydrodynamic performance when the heat load is large enough to maintain sustainable fluid flow in the flat-plate OHP. Under nonuniform heating conditions, concentrating more heat to overcome the negative effects rather than to amplify the positive effects on the fluid flow and heat transfer in OHPs is more beneficial to the overall thermal performance. For the 540 tested conditions, the flat-plate OHP has a much smaller overall thermal resistance than a pure 6063 aluminum alloy plate with the same configuration (approximately 15.3% on average) along a heat transfer distance of 101.8 mm. In addition, it possesses good adaptability to gravity, with coefficients of variation of 27.6% in the overall thermal resistance for inclination angles from 0° to 90°. Accordingly, this flat-plate OHP has good potential for high-efficiency and good-adaptability cooling of electronics under nonuniform heating by multiple heat sources.
机译：为了在来自多个热源的非均匀加热下提供电子设备的冷却，用“中心 - 多热源非均匀加热和两端空气”定制和实验研究了一种新的串联双通道平板振荡热管（OHP）冷却“在不同倾斜角下的布局，热载荷和不均匀的加热水平。流动图案图与热阻轮廓图一起组织，用于平板OHP的两个串联镜对称半部，比较不均匀的加热下的热性能差异。结果表明，与均匀的加热相比，不均匀的加热在低热负荷下产生更好的热流动力学性能，在平板OHP中具有准稳定的“止挡振动”流体运动，同时它导致热负荷时的热流动力学性能较差足够大以保持平板OHP中的可持续流体流动。在非均匀的加热条件下，浓缩更多的热量以克服负面影响，而不是放大对流体流动的正效，并在OHPS中的热传递更有利于整体热性能。对于540测试条件，平板OHP具有比具有相同配置（平均约15.3％）的纯6063铝合金板的总热阻较小。此外，它具有对重力的良好适应性，变化系数为27.6％，倾斜角度为0°至90°。因此，该平板OHP通过多种热源在非均匀加热下具有良好的高效和良好适应性冷却的良好潜力。

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  • 来源
    《International Journal of Heat and Mass Transfer》 |2021年第12期|121830.1-121830.15|共15页
  • 作者

    Xi Chen; Shengkai Chen; Ziwen Zhang; Dongke Sun; Xiangdong Liu;

  • 作者单位

    Key Laboratory of Energy Thermal Conversion and Control of Ministry of Education School of Energy and Environment Southeast University Nanjing 210096 PR China;

    Key Laboratory of Energy Thermal Conversion and Control of Ministry of Education School of Energy and Environment Southeast University Nanjing 210096 PR China;

    Key Laboratory of Energy Thermal Conversion and Control of Ministry of Education School of Energy and Environment Southeast University Nanjing 210096 PR China;

    School of Mechanical Engineering. Southeast University Nanjing Jiangsu PR China;

    Key Laboratory of Energy Thermal Conversion and Control of Ministry of Education School of Energy and Environment Southeast University Nanjing 210096 PR China College of Electrical Energy and Power Engineering Yangzhou University Yangzhou 225127 PR China;

  • 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

    Flat-plate oscillating heat pipe; Nonuniform heating; Tandem dual-channel structure; Multiple heat sources and sinks; Thermohydrodynamic performance;

    机译：平板振荡热管;不均匀的加热;串联双通道结构;多个热源和水槽;热流动力学性能;

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