华南理工大学学报(自然科学版) ›› 2007, Vol. 35 ›› Issue (11): 59-62.

• 化学化工 • 上一篇    下一篇

加热段冷却段长度分配对脉动热管性能的影响

汪双凤1 西尾茂文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. Institute of Industrial Science , Univ. of Tokyo, Tokyo 153-8505 , Japan
  • 收稿日期:2006-12-22 出版日期:2007-11-25 发布日期:2007-11-25
  • 通信作者: 汪双凤(1964-) ,女,教授,博士生导师,主要从事多相流动与传热,微小尺度热管技术与热声效应的研究. E-mail:sfwang@scut. edu.cn
  • 作者简介:汪双凤(1964-) ,女,教授,博士生导师,主要从事多相流动与传热,微小尺度热管技术与热声效应的研究.
  • 基金资助:

    华南理工大学引进入才启动基金( B10D6050060)

Effect of Length Ratio of Heating Section to Cooling Section on Properties of Oscillating Heat Pipe

Wang Shuang-feng1 Nishio Shigefumi2   

  1. 1. Key Laboratory of Enhanced Heat Transfer and Energy Conservation of the Ministry of Education , South China Univ. of Tech. , Guangzhou 510640 , Guangdong, China; 2. Institute of Industrial Science , Univ. of Tokyo, Tokyo 153-8505 , Japan
  • Received:2006-12-22 Online:2007-11-25 Published:2007-11-25
  • Contact: 汪双凤(1964-) ,女,教授,博士生导师,主要从事多相流动与传热,微小尺度热管技术与热声效应的研究. E-mail:sfwang@scut. edu.cn
  • About author:汪双凤(1964-) ,女,教授,博士生导师,主要从事多相流动与传热,微小尺度热管技术与热声效应的研究.
  • Supported by:

    华南理工大学引进入才启动基金( B10D6050060)

摘要: 通过一系列的实验,探讨了脉动热管的加热段长度与冷却段长度分配对其极限热输送能力的影响.实验管为内径0.9mm 、外径1. 5mm 、全长1560mm 的铜管,管内流体工质为R141b. 实验揭示了5 种不同长度配比的热管在不同充液率条件下的传热特性.结果发现当充液率较低时,如果加热段长度等于冷却段长度,则该热管有最大的极限热输送能力;而当充液率较高时,在加热段长度大于冷却段长度的条件下,该热管的极限热输送能力最强.

关键词: 脉动热管, 加热段, 冷却段, 长度, 充液率, 极限热输送能力

Abstract:

A series of experiments were performed to investigate the effect of length ratio of heating section to cooling section on the ultimate heat-transport capability of oscillating heat pipe (OHP) , and to reveal the heat transfer performance of the heat pipes with five different length ratios of different fluid-filling ratios. In the experiments , copper pipes with an inner diameter of 0.9 mm , an outer diameter of 1. 5 mm and a length of 1560mm were adopted , and R141b was used as the working fluid. The results show that , when the fluid-filling ratio is relatively low , the ultimate heat-transport capability is maximum at a heating-section ltmgth equal to the cooling one , however , when the fluid-filling ratio is relatively high , the OHP whose heating-section length is greater than the cooling one has the maximum heat-transport capability.

Key words: oscillating heat pipe, heating section, cooling section, length, fluid-filling ratio, ultimate heat-transport capability