新型微槽道平板热管的实验研究  

Experimental Investigation of a Flat Plate Heat Pipe With Intersected Micro-Grooves

作　　者：王晨[1] 刘中良[1] 张广孟[1] 张明[1] 

机构地区：[1]北京工业大学传热强化与过程节能教育部重点实验室及传热与能源利用北京市重点实验室,北京100124

出　　处：《工程热物理学报》2013年第4期698-701,共4页Journal of Engineering Thermophysics

基　　金：国家自然科学基金(No.51076004);北京市自然科学基金(No.50871004);高等学校博士学科点专项科研基金(No.20091103110010)

摘　　要：本文设计并制作了一种具有新型微槽道结构的铜水平板热管,实验测得了不同热流密度和不同充液率下热管正常工作时的稳态温度及相应的传热热阻,给出了热管的最佳充液量。实验结果表明,热管的蒸发面和冷凝面之间的温差很小,说明热管蒸发面和冷凝面上的微槽道结构有效强化了工质的相变换热,大幅度降低了轴向导热热阻,在充液率为87%时热管具有最佳的均热性能,轴向传热热阻只有0.0287 K/W,小于同厚度的铜板的导热热阻,表明所设计的热管在保持良好径向均热能力的同时,具有良好的轴向导热能力。Experimental investigations of a flat plate heat pipes （FPHP） are presented. The capillary structure is made of intersected micro-grooves on both evaporation surface and condensation surface. The heat pipe manufactured with copper and filled with de-ionized water, were tested against heat fluxes and working fluid filling ratios. The temperature fields and overall heat transfer resistances of the heat pipe under different experimental conditions are obtained. The measured temperature differences and the heat transfer resistances between the evaporation and the condensation surface of the FPHP are small, which proves that the micro-grooved structure greatly enhances the phase change heat transfer. The best performance of the FPHP is obtained at the FPHP working fluid filling ratio of 87% and the measured overall heat transfer resistance is 0.0287 K/W under the optimal conditions which is even smaller than the thermal resistance of the copper plate of the same thickness.

关 键 词：平板热管 微槽道 实验研究 相变换热 

分 类 号：TK124[动力工程及工程热物理—工程热物理]