Y形分叉流道圆盘状冷凝器环路热管的实验及仿真研究

Experimental and simulation research on loop heat pipe with a disc-shaped condenser using Y-type bifurcation channels

为了优化环路热管冷凝器与制冷机冷头的热耦合,研制了一种Y形分叉流道结构的圆盘状冷凝器丙烯环路热管(LHP1),使用CFD方法对冷凝器流道结构进行了优化。分别在冷凝器温度283 K、253 K、223 K下进行了实验研究,并与使用传统涡旋形冷凝器的环路热管(LHP2)进行了对比。结果显示,LHP1最大传热量远大于LHP2,加热功率大于25 W时,LHP1热阻远低于LHP2。本研究为制冷机与热管耦合集成提供了一种有效解决方案。

In order to couple the condenser of the loop heat pipe(LHP)and the cold finger of the cryocooler,a propylene loop heat pipe with a Y-shaped branch structure disc-shaped condenser(LHP1)was designed and the structure of the channels was optimized using commercial software Fluent.Propylene was used as the working fluid.Experimental studies were carried out at condenser temperatures of 283 K,253 K,and 223 K,respectively,and were compared with the loop heat pipe(LHP2)using a scroll condenser.The results show that the maximum power of LHP1 is much larger than LHP2.The thermal resistance of LHP1 is much smaller than LHP2 when the heat load is over 25 W.This research provides an effective solution for the coupling and integration of the cryocooler and the LHP.