复合基板-热管翅散热器自然对流传热特性研究  

Study on natural convection heat transfer characteristics of composite substrate/heat pipe fin heat sink

作　　者：钱佳杰 许辉 甘轲 张红 Qian Jiajie;Xu Hui;Gan Ke;Zhang Hong(School of Energy Science and Engineering,Nanjing Tech University,Nanjing 211800,China;Nanjing Forestry University,Nanjing 210037,China)

机构地区：[1]南京工业大学能源科学与工程学院,南京211800 [2]南京林业大学,南京210037

出　　处：《低温与超导》2023年第8期53-59,共7页Cryogenics and Superconductivity

基　　金：工信部航空发动机热环境与热结构重点实验室开放基金(CEPE2019008)资助。

摘　　要：基于常规翅片散热器的典型结构,提出了一种用于冷却功率器件的复合基板-热管翅散热器,对其在自然对流条件下进行散热性能试验研究。结果表明:该散热器的基板均温性良好,其翅片上下端温差随热负荷增加而略微增加,最大温差仅2.2℃。复合基板-热管翅散热器的热源温度在热负荷范围内上升幅度相对较小,其总热阻随热负荷的增加而明显减小,其中热负荷为180 W时复合基板-热管翅散热器的总热阻比常规翅片散热器低16.3%。Based on the typical structure of conventional fin heat sink,a composite substrate/heat pipe fin heat sink for cooling power devices was proposed,experimental studies on the heat transfer performance of the heat sink under natural convection conditions were conducted.The results show that the temperature uniformity of the heat sink base is good,and the temperature difference between the upper and lower ends of the fins slightly increases with the increase of heat load,with a maximum temperature difference of only 2.2℃.The temperature rise of the heat source in the composite substrate/heat pipe fin heat sink is relatively small within the range of heat load,and the total thermal resistance decreases significantly with the increase of heat load.Among them,when the heat load is 180 W,the total thermal resistance of the composite substrate/heat pipe fin heat sink is 16.3%lower than that of the conventional fin heat sink.

关 键 词：热管式散热器 电力电子器件 均温性能 散热性能 

分 类 号：TK172[动力工程及工程热物理—热能工程]