化工学报2025，Vol.76Issue(3)：1018-1028,11.DOI:10.11949/0438-1157.20240961
多回路平板式环路热管热性能
Thermal performance of multi-loop flat loop heat pipes
摘要
Abstract
To solve the heat dissipation problem of high heat flux electronic components,a novel multi-loop flat-type loop heat pipe with a size of 200 mm×150 mm×30 mm was prepared.The heat pipe adopts a design that couples an array of pin-fins on the evaporation surface with multiple gas-liquid pipelines,which can improve heat transfer efficiency in a limited space.The effects of heat flux,filling ratio,and working fluid properties on the thermal performance of loop heat pipe,and the startup characteristics of loop heat pipe under different heat load were studied.The heat performance of loop heat pipe under single and multi-source heating conditions was compared.The results show that the new loop heat pipe starts quickly,with a startup time of only 52 s at 300 W heat power,and the surface temperature fluctuation of the heat source after steady state is less than 0.3℃.When heated by three heat sources simultaneously with a total heat load of 388.8 W(the heat flux of main heat source can reach 133 W/cm2),the heating surface temperature is less than 85℃,and no dry burning occurs in the evaporator,effectively satisfy the heat dissipation requirements of high-power and high heat flux electronic devices.关键词
环路热管/针肋/相变/传热/气液两相流Key words
loop heat pipe/pin-fin/phase change/heat transfer/gas-liquid two-phase flow分类
能源与动力引用本文复制引用
张亦鸣,杨鹏,纪献兵,任纪星,张磊,苗政..多回路平板式环路热管热性能[J].化工学报,2025,76(3):1018-1028,11.基金项目
国家自然科学基金项目(52176154,52476007) （52176154,52476007）
