闭式脉动热管启动性能的实验研究  

Experimental Study on Start-up Performance of Closed Loop Pulsating Heat Pipe

作　　者：刘向东[1] 陈永平[1] 张程宾[1] 施明恒[1] 

机构地区：[1]东南大学能源与环境学院,南京210096

出　　处：《宇航学报》2011年第10期2300-2304,共5页Journal of Astronautics

基　　金：江苏省自然科学基金(BK2011062)

摘　　要：实验研究了以乙醇为工质的闭式脉动热管在不同工况下的启动性能,分析了充液率、倾斜角、热负荷对脉动热管启动性能的影响。研究发现脉动热管具有两类启动方式:温度飞升式启动和温度渐进式启动。脉动热管启动性能最优的最佳充液率范围在41%～52%之间。相同热负荷下,随着倾斜角在0°～90°范围内逐渐增大,热管启动性能将得到改善。随着热负荷的增大,启动时间缩短但最高启动温度随之升高。The start-up performance of closed-loop pulsating heat pipe（CLPHP） with ethanol as the working fluid under different working conditions was experimentally investigated.The influence of liquid filled ratio,inclination angle and heat load on start-up performance were analyzed.Two types of the start-up process were observed： the start-up with apparent temperature overshoot and the start-up with smooth temperature increasing.The results indicate that the optimal range of liquid filled ratio for start-up performance is from 41% to 52%.The start-up performance is improved with the increase of inclination angle from 0° to 90° under the same heat load.Moreover,with the increase of heat load,the start-up time decreases while the maximum start-up temperature increases.

关 键 词：闭式脉动热管 启动性能 充液率 

分 类 号：TK124[动力工程及工程热物理—工程热物理]