局部加热工况高温平板热管传热特性试验研究  

Experimental study on heat transfer characteristics of high-temperature flat heat pipe under sectional heating conditions

作　　者：丁琪 许辉 江浩文 张红 Ding Qi;Xu Hui;Jiang Haowen;Zhang Hong(School of Energy Science and Engineering,Nanjing Tech University,Jiangsu Nanjing,211816,China;Headmaster's Office of Nanjing Forestry University,Jiangsu Nanjing,210037,China)

机构地区：[1]南京工业大学能源科学与工程学院,江苏南京211816 [2]南京林业大学校长办公室,江苏南京210037

出　　处：《机械设计与制造工程》2021年第12期105-108,共4页Machine Design and Manufacturing Engineering

基　　金：工业和信息化部重点实验室开放基金项目(CEPE2019008)。

摘　　要：为探究高温平板热管在高热流密度环境中的传热特性,开发了以金属纤维毡作吸液芯的钠高温平板热管,利用局部热源加热的方式,通过改变加热功率、局部热源位置等参数来研究其传热特性。实验结果表明:热管在加热功率450~600 W内可以正常启动,加热功率越大,启动时间越短,热阻越小,传热系数增大;局部热源位置的变化对热管的启动有一定的影响,当局部热源位置从热管中间移动到边缘时,热管均温性能变差,扩散热阻增加。In order to explore the heat transfer characteristics of high-temperature flat heat pipe in a high heat flux environment, a sodium high-temperature flat heat pipe with metal felt wick as the liquid-absorbing core is developed. This paper changes the heating power, heat source position and other parameters with using sectional heat source to study the heat transfer characteristics of high-temperature flat heat pipe. The test results show that the heat pipe can normally start within the heating power of 450~ 600 W. The greater the heating power, the shorter the starting time, and the thermal resistance becomes smaller and the heat transfer coefficient becomes larger under the condition of greater heating power. The change of the position of the heat source has an effect on the start-up performance of the heat pipe. When the position of the heat source moves from the center to the edge, the temperature uniformity deteriorates and the diffusion thermal resistance increases.

关 键 词：高温平板热管 启动性 均温性 热阻 

分 类 号：TK172.4[动力工程及工程热物理—热能工程]