中国空间科学技术2009，Vol.29Issue(5)：15-20,32,7.
平板型MLHP温度波动研究
Investigation of Temperature Oscillation in Miniature Loop Heat Pipe with Flat Evaporator
摘要
Abstract
Loop heat pipes are heat transfer devices based on the evaporation and condensation of a working fluid, and using capillary pumping forces to ensure the fluid circulation. A series of tests have been carried out with a miniature loop heat pipe (MLHP) with flat evaporator and a fin-and-tube type condenser. The loop was made of pure copper with stainless mesh wick and acetone was used as the working fluid. At low heat loads, temperature oscillations were observed throughout the loop. The characteristics of temperature oscillation of the flat MLHP at heat fluxes from 2W/cm~2 to 3W/cm~2were studied. The compensation chamber was considered as the most critical component of the MLHP and its hydrodynamic state dictated the extent and the characteristics of the temperature oscillations for the input heat load. The heat leaks from the evaporator to the compensation chamber, the heat loss to ambient and subcooled liquid temperature dictated the vapor condition inside the compensation chamber, and the rate of vapor growth or dissipation dictated the nature of the temperature oscillation. The effects of different liquid charging ratio and the tilt angle to the temperature oscillations were studied in detail.关键词
小型环路热管/平板型蒸发器/温度波动/电子器件/散热Key words
Miniature loop heat pipe/Flat evaporator/Temperature oscillation/Electronic device/Heat dissipation分类
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盖东兴,刘伟,刘志春,杨金国..平板型MLHP温度波动研究[J].中国空间科学技术,2009,29(5):15-20,32,7.基金项目
国家自然科学基金(No.50876035),中国博士点学科新进教师博士点基金(No.20070487093) （No.50876035）
