Cool Down Results from a Fully Localized 250W @ 4.5 K Helium Refrigerator at TIPC

27th International Cryogenics Engineering Conference and International Cryogenic Materials Conference 2018

Yang, Shaoqi^1 ; Xie, Xiujuan^1^2 ; Deng, Bichai^1^3 ; Pan, Wei^1^2 ; Li, Qing^1^2

Key Laboratory of Cryogenics, Technical Institute of Physics and Chemistry, CAS, Beijing

100190, China^1

State Key Laboratory of Technologies in Space Cryogenic Propellants, Beijing

100190, China^2

University of Chinese Academy of Sciences, Beijing

100049, China^3

关键词: Chinese Academy of Sciences;    Electric heater;    Helium refrigerators;    Institute of Physics;    Performance analysis;   

Others  :  https://iopscience.iop.org/article/10.1088/1757-899X/502/1/012014/pdf
DOI  :  10.1088/1757-899X/502/1/012014

来源: IOP

【 摘 要 】

The 250W@4.5K refrigerator, which is localized at Technical Institute of Physics and Chemistry, Chinese Academy of Sciences, is composed of the compressor, turbo-expanders, cryogenic heat exchangers, JT valve and electric heater. This refrigerator operates stably and meets the design target after the test and commission. This paper describes the investigation on the optimization of the cool down scheme and the performance analysis of the refrigerator.