化工进展2017，Vol.36Issue(8)：2816-2821,6.DOI:10.16085/j.issn.1000-6613.2016-2309
工质表面张力和黏度对脉动热管启动及传热热阻的影响
Influence of surface tension and viscosity on the start-up time and thermal resistance of pulsating heat pipe
摘要
Abstract
Thermo-physical properties of aqueous solutions of potassium perfluorooctanoate (PFOK),with mass fractions of 0.02％,0.05％,0.1％,0.2％,0.5％,were testedrespectively.It was foundthat significant changes in a little amount of PFOK could lead to surface tension of water,viscosity followed,while the specific heat,density,thermal conductivity and other parameters of water were less affected.An experimental study on characteristics of the pulsating heat pipe (PHP),with the inner diameter of 2.5mm of copper pipe,using water of different surface tensions and viscosities was carried out.The results showed that promotion of heating power on startup time is obvious if the heating power input is no more than 60W.Change laws of startup time and thermal resistance with the effect of surface tension present "W" type image due to the increment of viscosity.Besides,the effect of surface tension and viscosity on the thermal resistance is decreased with the increase of the heating power.关键词
脉动热管/表面张力/黏度/启动时间/传热热阻Key words
pulsating heat pipe/surface tension/viscosity/startup time/thermal resistance分类
能源科技引用本文复制引用
郑开明,徐荣吉,王瑞祥,邢美波,蔡骥驰,苑亚..工质表面张力和黏度对脉动热管启动及传热热阻的影响[J].化工进展,2017,36(8):2816-2821,6.基金项目
国家自然科学基金青年基金(51506004)及北京市自然科学基金(3162009)项目. （51506004）
