CIESC Journal ›› 2023, Vol. 74 ›› Issue (4): 1561-1569.DOI: 10.11949/0438-1157.20221300

• Fluid dynamics and transport phenomena • Previous Articles     Next Articles

Experimental study on thermal performance of high power flat heat pipe

Huizhu YANG1(), Jingling LAN2(), Yue YANG1, Jialin LIANG1, Chuanwen LYU1, Yonggang ZHU1()   

  1. 1.School of Mechanical Engineering and Automation, Harbin Institute of Technology, Shenzhen 518055, Guangdong, China
    2.School of Science, Harbin Institute of Technology, Shenzhen 518055, Guangdong, China
  • Received:2022-09-27 Revised:2023-03-10 Online:2023-06-02 Published:2023-04-05
  • Contact: Huizhu YANG, Yonggang ZHU

高功率平板热管传热性能的实验研究

杨辉著1(), 兰精灵2(), 杨月1, 梁嘉林1, 吕传文1, 朱永刚1()   

  1. 1.哈尔滨工业大学(深圳)机电工程与自动化学院,广东 深圳 518055
    2.哈尔滨工业大学(深圳)理学院,广东 深圳 518055
  • 通讯作者: 杨辉著,朱永刚
  • 作者简介:杨辉著(1988—),男,博士,助理教授,yanghuizhu@hit.edu.cn
    兰精灵(1998—),女,硕士研究生,Lan_dadao@163.com
  • 基金资助:
    国家自然科学基金项目(52106004);广东省基础与应用基础研究基金项目(2020A1515110270);中国博士后基金面上项目(2022M710945)

Abstract:

A novel copper-water flat heat pipe with porous metal-foam wicks has been conducted to study its heat transfer characteristics working in high heat flux and anti-gravity conditions. The effects of inclination angle, filling ratio and heat loads on the heat transfer characteristic of flat heat pipe, including its thermal response performance and thermal resistance, were investigated experimentally. The results showed that the flat heat pipe has a favorable thermal response performance. It can reach a stable state within 60 s. The thermal resistance of flat heat pipe decreases first and then increases with increase of filling ratio, and flat heat pipe with a filling ratio of 20% has the best performance. Inclination angle has a significant effect on thermal performance. Under the premise that the maximum temperature is within 90℃, flat heat pipe can dissipate 300 W with a thermal resistance of 0.0109 K/W. Besides, compared with the heat pipes reported in the literatures, this flat heat pipe not only obtains a lower thermal resistance, but also achieves effective heat conduction with higher heat flux. These results are of great significance to the design of advanced flat heat pipes.

Key words: flat heat pipe, high heat flux, thermal resistance, anti-gravity, heat transfer, porous media, heat conduction

摘要:

为探究平板热管在高热通量和逆重力环境中的传热特性,设计并制作了一种具有泡沫金属结构的铜-水平板热管,系统地研究了不同放置方式、充液率和热功率对平板热管热响应特性和热阻的影响。实验结果表明:平板热管可实现快速启动,60 s内达到稳定,随着充液率增加,热管热阻先降低后升高,充液率为20%时性能最佳,放置方式对热管性能影响明显,顺重力性能最佳,在300 W时得到最小热阻为0.0109 K/W。相较于文献中的热管,此热管不仅获得了更低的热阻值,亦可实现更高热通量的有效导热。

关键词: 平板热管, 高热通量, 热阻, 逆重力, 传热, 多孔介质, 热传导

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