Study on improvement of pulsating heat pipe by solid particles, and its heat transport mechanism

固体颗粒改进脉动热管及其传热机理研究

• 批准号: 20560180
• 负责人: NAGASAKI Takao
• 金额: $ 3万
• 依托单位: Tokyo Institute of Technology
• 依托单位国家: 日本
• 项目类别: Grant-in-Aid for Scientific Research (C)
• 财政年份: 2008
• 资助国家: 日本
• 起止时间: 2008 至 2010
• 项目状态: 已结题
• 来源: https://kaken.nii.ac.jp/grant/KAKENHI-PROJECT-20560180/
• 关键词: ヒートパイプ; 自励振動; 固体微粒子

The effect of small solid particles on the performance of pulsating heat pipes (PHPs) was investigated using a 12 turn PHP made of copper tubes. Alumina, copper or silver particles were added into the working fluid, water, ethanol or R141b, and the enhancement of heat transport performance by small particles was clarified in detail. In addition, the mechanism of PHP was investigated by a visualization experiment and analysis on the oscillation of a liquid column in a square straight channel.

利用12圈铜管脉动热管，研究了固体小颗粒对脉动热管性能的影响。在工质、水、乙醇或R141b中加入氧化铝、铜或银颗粒，详细阐述了小颗粒对传热性能的强化作用。此外，通过可视化实验和对方形直流道内液柱振荡的分析，研究了液柱振动的机理。