空间低温热管的设计与实验研究

介绍了为空间辐射制冷器研制开发的一种干道吸液芯氮气低温热管 ,该热管直径为6mm ,长度210mm ,工作温度80 .0～120 .0K ,最大传热功率可达2.5W ;并对其传热性能进行了实验研究。实验结果表明低温热管的传热性能远远优于固体的导热性能 ,完全能够满足辐射制冷器冷焦面耦合需要

DESIGN AND EXPERIMENT OF A SPACE CRYOGENIC HEAT PIPE

The cryogenic heat pipe is an efficient heat transfer device.It is used for space cryogenic heat transfer technology.An artery wick cryogenic heat pipe with nitrogen as the working fluid developed for spaceborne radiant coolers is described.It is fabricated of stainless steel tube with the diameter of 6mm and the length of 210mm,the operating temperature from 80K to 120K,the maximum heat transfer load reached 2.5W.An experimental investigation is described concerning the heat pipe heat transport characteristics. The results indicate that the heat conduction performance of the cryogenic heat pipe has the advantages of solid conductors at the same volume.It can meet entirely the demands of the low temperature focal plane coupling of the spaceborne radiant coolers.