Energy distribution between liquid hydrogen and liquid oxygen temperatures in a Stirling/pulse tube refrigerator  

作　　者：Kongkuai YING Wang YIN Yinong WU Zhenhua JIANG Jiantang SONG Shaoshuai LIU Haifeng ZHU 

机构地区：[1]Shanghai Institute of Technical Physics,Chinese Academy of Sciences,Shanghai,200083,China [2]University of Chinese Academy of Sciences,Beijing,100049,China [3]Nantong Academy of Intelligent Sensing,Zilang Technology Science and Technology City,Nantong,226000,China

出　　处：《Frontiers in Energy》2023年第4期516-526,共11页能源前沿（英文版）

基　　金：supported by the Hundred Talents Program of the Chinese Academy of Sciences,the National Natural Science Foundation of China(Grant No.51806231);the Strategic Priority Research Program of the Chinese Academy of Sciences(XDB35000000,XDB35040102)。

摘　　要：A two-stage gas-coupled Stirling/pulse tube refrigerator(SPR),whose first and second stages respectively involve Stirling and pulse tube refrigeration cycles,is a very promising spaceborne refrigerator.The SPR has many advantages,such as a compact structure,high reliability,and high performance,and is expected to become an essential refrigerator for space applications.In research regarding gas-coupled regenerative refrigerator,the energy flow distribution between the two stages,and optimal phase difference between the pressure wave and volume flow,are two critical parameters that could widely influence refrigerator performance.The effects of displacer displacement on the pressure wave,phase difference,acoustic power distribution,and inter-stage cooling capacity shift of the SPR have been investigated experimentally.Notably,to obtain the maximum first-stage cooling capacity,an inflection point in displacement exists.When the displacer displacement is larger than the inflection point,the cooling capacity could be distributed between the first and second stages.In the present study,an SPR was designed and manufactured to work between the liquid hydrogen and liquid oxygen temperatures,which can be used to cool small-scale zero boil-off systems and space detectors.Under appropriate displacer displacement,the SPR can reach a no-load cooling temperature of 15.4 K and obtain 2.6 W cooling capacity at 70 K plus 0.1 W cooling capacity at 20 K with 160 W compressor input electric power.

关 键 词：Stirling/pulse tube refrigerator displacer displacement space application phase shift energy distribution 

分 类 号：TB6[一般工业技术—制冷工程]