一种空间极低温吸附制冷机的设计与实现  

Design and Implementation of a Space Sub-Kelvin Sorption Cooler

作　　者：罗宝军[1] 王兆利[1] 闫涛[1] 梁惊涛[1] 

机构地区：[1]中国科学院理化技术研究所,北京100190

出　　处：《宇航学报》2015年第7期855-860,共6页Journal of Astronautics

基　　金：国家自然科学基金(51206176)

摘　　要：针对极低温吸附制冷技术的热沉制冷系统,系统分析了极低温吸附制冷的特性,研究了热沉温度对极低温吸附制冷性能的影响,研制了一台极低温吸附制冷机样机,工质气体为氦4,在1.5W@4.2K G-M制冷机基础上实现了50μW@0.8K的制冷性能,验证了基于机械制冷系统的更高热沉温度技术的可行性,这一成果为深空探测和载人空间站相关研究提供了技术支撑。In order to match a suitable heat sink cooling system,characteristics of sub-Kelvin sorption cooling are analyzed. The effect of heat sink temperature on the performance of sorption cooler is then studied. A prototype of sorption cooler is designed and investigated. Based on a pre-cooler of 1. 5W@ 4. 2K G-M refrigerator,performance of 50μW@ 0. 8K is obtained for the sorption cooler with4 He as the working fluid. The experimental results validate the technical feasibility of a higher heat sink temperature obtained by proposed mechanical cooling system,and the research results will also provide technical support of sub-Kelvin cooling for China＇s deep space exploration and manned space station program.

关 键 词：极低温 吸附制冷 热沉温度 氦4 深空探测 

分 类 号：V444.36[航空宇航科学与技术—飞行器设计]