高热流密度多热源冷却用相变换热冷板实验研究  

Experimental study on phase change heat transfer cooling plate for multiple heat sources cooling with high heat flux

作　　者：刘凯[1] 刘金平[1,2] 周易 朱文杰 王泽嵩 LIU Kai;LIU Jinping;ZHOU Yi;ZHU Wenjie;WANG Zesong(School of Electric Power Engineering,South China University of Technology,Guangzhou 510641,China;Guangdong Province Key Laboratory of Efficient and Clean Energy Utilization,Guangzhou 510641,China;Shanghai Highly Electrical Appliances Co.Ltd.,Shanghai 201206,China)

机构地区：[1]华南理工大学电力学院,广东广州510641 [2]广东省能源高效清洁利用重点实验室,广东广州510641 [3]上海海立电器有限公司,上海201206

出　　处：《西安工程大学学报》2023年第5期99-106,共8页Journal of Xi’an Polytechnic University

基　　金：国家自然科学基金(51776075)。

摘　　要：针对高热流密度电子元器件的散热问题,设计加工了5块不同结构、不同加工方式的相变换热冷板,并研究了泵驱动相变换热冷板结构参数、热流密度、制冷剂流量、热源布置等因素对冷板换热性能、阻力、泵功耗等方面的影响。结果表明:所设计的钻孔冷板换热性能优异,对总发热量5000 W、热流密度38 W/cm^(2)的分散热源进行散热时,热源表面与冷板内制冷剂温差小于25℃,同时冷板阻力小于30 kPa,泵功耗小于35 W;冷板的加工方式对其换热效果影响显著,冷板应尽量采用一体化设计,减少热传递的环节,避免不同材料嵌合产生的接触热阻;当多个热源热流密度不同时,将热流密度较大的热源布置在靠近冷板入口处有更好的换热效果。In view of the heat dissipation of electronic components with high heat flux,five phase change heat transfer cold plates with different structures and processing methods were designed,the effects of cold plate structural parameters,heat flux,refrigerant flow rate,and heat source layout on heat transfer performance,resistance of cold plate,and the pump power consumption were experimentally studied.The results show that the designed perforated cold plate has excellent heat transfer performance.The designed perforated cold plate maintains a temperature difference of less than 25℃between the heat source surface and the refrigerant inside the cold plate when dissipating a total heat output of 5000 W and a heat flux of 38 W/cm^(2),with cold plate resistance less than 30 kPa and pump power consumption less than 35 W.The processing method of cold plate has a significant influence on its heat transfer effect.The cold plate should adopt integrated design as far as possible to reduce the link of heat transfer and avoid the contact thermal resistance caused by the chimerism of different materials.When multiple heat sources have different heat flux densities,placing the higher heat flux heat source closer to the inlet of the cold plate achieves better heat transfer efficiency.

关 键 词：高热流密度 多热源 相变换热 冷板 R134A 

分 类 号：TB61[一般工业技术—制冷工程] TB654