单面波浪平板脉动热管的传热性能  

Heat Transfer Performance of Flat Pulsating Heat Pipe with Single-sided Wave Plate

作　　者：夏侯国伟[1] 孔方明 谢明付 

机构地区：[1]长沙理工大学能源与动力工程学院 [2]中国人民解放军92002部队

出　　处：《制冷学报》2014年第4期73-77,共5页Journal of Refrigeration

基　　金：湖南省自然科学基金项目(12JJ2031);长沙市能源局项目([2008]27-8)资助~~

摘　　要：对一种单面波浪平板脉动热管的传热性能进行了实验研究，分析在空气强制对流冷却条件下充液率、加热功率、倾角等因素对其传热性能的影响。研究结果表明，除0°倾角外，脉动热管的最佳充液率为20％~30％，倾斜角度对脉动热管传热性能的影响很小，但90°时相对最好。脉动热管在0°放置时其传热性能较差，在低充液率的情况下甚至丧失脉动效果，主要是工质回流不畅的原因，与平板脉动热管的槽道设计有很大关系。此外低加热功率时热管传热性能存在波动，有时甚至不能启动。Heat transfer performance of a flat pulsating heat pipe with single-sided wave plate was experimentally investigated. Influence factors of heat transfer performance were analyzed under the effect of forced air convection cooling conditions,including liquid filling ratio,heating power and inclination angle. The results show that the best liquid filling ratio of pulsating heat pipe is 20% ~30% except laid at 0° angle. The effect of inclination angle on the heat transfer performance of pulsating heat pipe is very small, but 90° is relatively the best. Heat transfer performance of heat pipe is poor when it is laid at 0° angle,even loses pulsating effect when liquid filling ratio is low. The main reason is that the backflow of working fluid is in difficulty in this case,which has a lot to do with the design of groove of plate pulsating heat pipe. In addition,heat transfer performance of heat pipe may be undulated when heating power is low,sometimes heat pipe even can′t start.

关 键 词：脉动热管 传热性能 梯形通道 影响因素 

分 类 号：TK121[动力工程及工程热物理—工程热物理] TQ051.5[动力工程及工程热物理—热能工程]