Experimental Research on the JT Cycle of Hybrid 4.5K JT Cryocooler

被引：0
|
作者：
Ma, Yuexue [1 ]
Quan, Jia [1 ]
Wang, Juan [1 ]
Liu, Yanjie [1 ]
Li, Jianguo [1 ]
Liang, Jingtao [1 ]
机构：
[1] Chinese Acad Sci, Tech Inst Phys & Chem, Key Lab Space Energy Convers Technol, Beijing 100190, Peoples R China
来源：
27TH INTERNATIONAL CRYOGENICS ENGINEERING CONFERENCE AND INTERNATIONAL CRYOGENIC MATERIALS CONFERENCE 2018 (ICEC-ICMC 2018) | 2019年 / 502卷
基金：
中国国家自然科学基金;
关键词：
CRYOGENIC SYSTEM;
D O I：
10.1088/1757-899X/502/1/012033
中图分类号：
O59 [应用物理学];
学科分类号：
摘要：
Key Laboratory of Space Energy Conversion Technologies of TIPC, CAS has developed a 4.5K Joule-Thomson (JT) cryocooler precooled by a multistage pulse tube cooler. In this paper, series of experimental research is carried out to explore the performance of the JT cooler at different operating conditions. When only the power consumption of JT compressors is considered, the coefficient of performance (COP) of the JT cycle is proposed to evaluate the performance of JT cycle. Experimental research is carried out to investigate the influence of supply pressure and JT orifice on cooling capacity and especially the COP of JT cooler. Experimental results suggest that cooling power of JT cooler increases as supply pressure increases and higher COP are gained because of rising flow resistance of JT orifice. Then JT orifices of different diameters are experimentally studied to explore the effect of flow resistance of JT orifice on the performance of JT cooler.
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页数：5
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