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

Research Project

Project/Area Number	20560180
Research Category	Grant-in-Aid for Scientific Research (C)
Allocation Type	Single-year Grants
Section	一般
Research Field	Thermal engineering
Research Institution	Tokyo Institute of Technology
Principal Investigator	NAGASAKI Takao Tokyo Institute of Technology, 大学院・総合理工学研究科, 准教授 (30155923)
Project Period (FY)	2008 – 2010
Project Status	Completed (Fiscal Year 2010)
Budget Amount *help	¥4,680,000 (Direct Cost: ¥3,600,000、Indirect Cost: ¥1,080,000) Fiscal Year 2010: ¥650,000 (Direct Cost: ¥500,000、Indirect Cost: ¥150,000) Fiscal Year 2009: ¥780,000 (Direct Cost: ¥600,000、Indirect Cost: ¥180,000) Fiscal Year 2008: ¥3,250,000 (Direct Cost: ¥2,500,000、Indirect Cost: ¥750,000)
Keywords	ヒートパイプ / 自励振動 / 固体微粒子
Research Abstract	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.