重力对微槽平板热管传热性能的影响  

The Influence of Gravitation on the Heat Transfer Performance of Micro-grooved Flat-plate Heat Pipes

作　　者：范春利[1] 曲伟[2] 孙丰瑞[1] 马同泽[2] 

机构地区：[1]海军工程大学船舶与动力学院,湖北武汉430033 [2]中国科学院工程热物理研究所,北京100080

出　　处：《热能动力工程》2004年第1期33-37,共5页Journal of Engineering for Thermal Energy and Power

基　　金：国家自然科学重大基金资助项目(5 9995 5 5 0 -4 )

摘　　要：系统地研究了重力对微槽平板热管传热性能的影响 ,分析了工作温度、冷却方式和倾角等影响因素。通过对比实验发现重力对热管的轴向液膜分布影响非常明显 ,在周向只在大充液率时有明显的影响 ,从而使得倾角较大地影响了热管的传热能力。研究表明深槽平板热管具有优良的传热性能 。A systematic study was conducted of the impact of gravitation on the heat transfer performance of micro-grooved flat-plate heat pipes along with an analysis of such influencing factors as operating temperatures and cooling modes, etc. Through contrast experiments it has been found that there exists a very marked influence of gravitation on the liquid-film axial distribution, while in the peripheral direction the influence is significant only when high liquid-charging rates are employed. The latter condition enables an inclination angle to exercise a relatively great influence on the heat transfer capacity of heat pipes. A more detailed study has shown that deep-grooved flat-plate heat pipes offer fairly good heat transfer performance, providing them with bright prospects of usage in the area of micro-space heat dissipation for cooling microelectronic devices.

关 键 词：微型热管 电子器件 微槽平板热管 微槽道 薄液膜 

分 类 号：TK124[动力工程及工程热物理—工程热物理]