Thermodynamic analysis of different cold end configurations for mixed mode cryogenic helium plant

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

Zhu, Zhigang^1 ; Zhang, Qiyong^1 ; Zhou, Zhiwei^1 ; Zhuang, Ming^1 ; Zhu, Ping^1 ; Wu, Keping^1

Institute of Plasma Physics, Chinese Academy of Sciences, Hefei

230031, China^1

关键词: Exergy Analysis;    High-pressure helium;    Inlet pressures;    Mixed mode;    Mode of operations;    Thermo dynamic analysis;    Thermodynamic performance;    Tokomaks;   

Others  :  https://iopscience.iop.org/article/10.1088/1757-899X/502/1/012122/pdf
DOI  :  10.1088/1757-899X/502/1/012122

来源: IOP

【 摘 要 】

With the development of scientific installations like particle accelerators, tokomaks and colliders involving in the large-scale and multiple-cryogenic-users way, more and more cryogenic helium plants operate in mixed mode, neither pure refrigeration nor pure liquefaction. As a main functional section of the mixed mode cryogenic helium plant, performance of cold end section influences the performance of the whole system. In this paper, thermodynamic performance of six cold end configurations for mixed mode cryogenic helium plant will be evaluated based on exergy analysis. The influence of the inlet pressure, temperature of high pressure helium stream and mode of operation on thermodynamic performance of the cold end section will be investigated. Results from the analysis may help to design and optimize cold end configuration for mixed mode cryogenic helium plant.