CIESC Journal ›› 2012, Vol. 63 ›› Issue (12): 3791-3797.DOI: 10.3969/j.issn.0438-1157.2012.12.008

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Heat-transport capability of self-rewetting fluid heat pipe

WANG Shuangfeng1, HU Yanxin1, LI Xuanyou2   

  1. 1. Key Laboratory of Enhanced Heat Transfer and Energy Conservation of the Ministry of Education, South China University of Technology, Guangzhou 510640, Guangdong, China;
    2. Industrial Energy Conservation Center of Shandong Academy Sciences, Jinan 250103, Shandong, China
  • Received:2012-03-06 Revised:2012-09-13 Online:2012-09-13 Published:2012-12-05
  • Supported by:

    supported by the National Natural Science Foundation of China(51146009)and the Funding from Breakthroughs in Key Areas of Guangdong and Hong Kong Project(2010Z21).

自湿润流体热管的热输送性能

汪双凤1, 胡艳鑫1, 李选友2   

  1. 1. 华南理工大学传热强化与过程节能教育部重点实验室, 广东 广州 510640;
    2. 山东省科学院工业节能研究中心, 山东 济南 250103
  • 通讯作者: 汪双凤
  • 作者简介:汪双凤(1964-),女,教授。
  • 基金资助:

    国家自然科学基金项目(51146009);粤港关键领域重点突破项目(2010Z21)。

Abstract: Dilute aqueous solutions of alcohols with large number of carbon atoms,due to their properties associated to an anomalous dependency of the surface tension with temperature,can be prepared as self-rewetting fluids.In this study,experimental investigation was conducted to explore heat transport capability of heat pipe working with self-rewetting fluid[0.1%(mass) heptanol aqueous solution].Under different heat loads and different orientations(vertical and horizontal orientation),the heat transport capabilities of heat pipe with the self-rewetting fluid and water were compared.The results show that with the increase of heating power,the heat transport capability of heat pipe is enhanced by using the self-rewetting fluid.In the horizontal heating mode,without the influence of gravity,the enhancement of heat transfer is more evident.Compared with water,the self-rewetting fluid presents significantly better heat transport capability.

Key words: self-rewetting fluid, heat pipe, heat transfer enhancement

摘要: 高碳醇水溶液表面张力与温度梯度呈现非常规特性,可制备成具有自湿润特性的流体。为探究自湿润流体在热管中对热输送能力的影响,采用0.1%(质量分数)的庚醇水溶液作为工质,以烧结型热管为研究对象,在不同的加热功率和工况(垂直/水平)下,对其热管热输送特性的影响进行了实验研究,并与水进行了对比。结果表明,随着功率增加,自湿润流体作为热管工质的强化传热效果逐趋明显。在水平工况下,由于缺少重力回流的作用,其强化传热效果则更为突出。

关键词: 自湿润流体, 热管, 强化传热

CLC Number: