闭式振荡热管内流动状态与传热性能实验研究  

EXPERIMENTAL STUDY OF FLOW STATE AND HEAT TRANSFER PERFORMANCE OF CLOSED-LOOP OSCILLATING HEAT PIPE

作　　者：刘向东[1] 时凯[1] 郭雨含[1] 鲁进利[1] 王淑娟[1] 郝英立[1,2] 

机构地区：[1]东南大学能源与环境学院,江苏南京210096 [2]东南大学空间科学与技术研究院,江苏南京210096

出　　处：《工程热物理学报》2010年第10期1735-1738,共4页Journal of Engineering Thermophysics

基　　金：国家重点基础研究发展计划资助项目(No.2006CB300404);国家自然科学基金资助项目(No.50676020)

摘　　要：本文对不同工况下闭式振荡热管内工质流动状态及其传热性能进行了实验研究,分析了流动状态、加热功率及倾斜角之间的相互影响关系.结果表明,随着加热功率的升高及倾斜角在0°～90°范围内的增大,管内工质循环流动趋势增强,热管的热阻减小,工质的充液量限制了高功率时热管性能的进一步提高;冷热端温差随加热功率的升高呈上升-下降-再上升的变化规律,90°和70°倾角下冷热端温差的最低值所对应的加热功率分别为100 W及125 W。The flow and heat transfer performance of a closed-loop oscillating heat pipe （CLOHP） under different conditions were experimentally investigated to analyze the interaction of flow state, heating power and inclination angle. The results indicate that the trend of working fluid circulation is enhanced and the thermal resistance of the CLOHP decreases with the increase of heating power and the increase of inclination angle in the range of 0°-90°. The further improvement of CLOHP heat transfer performance is limited by the charge quantity. With increase of heating power, the temperature difference between the hot and cold sides increases first, then decreases, and finally increases again. The minimum temperature difference in the angle of 90°and 70° appears under the heating Dower of 100 W and 125 W. respectively.

关 键 词：振荡热管 流动状态 红外热图像 倾斜角 传热性能 

分 类 号：TK124[动力工程及工程热物理—工程热物理]