Design and test of the 4.5 K supercritical Helium coiled subcooler

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

Zhang, S.^1^2 ; Ouyang, Z.^1 ; Li, J.^1

High Magnetic Field Laboratory of the Chinese Academy of Sciences, Hefei

230031, China^1

University of Science and Technology of China, Hefei

230026, China^2

关键词: Cable-in-conduit conductors;    Design and tests;    Design Principles;    Forced flows;    High magnetic fields;    Sc magnets;    Supercritical helium;    Valve box;   

Others  :  https://iopscience.iop.org/article/10.1088/1757-899X/502/1/012159/pdf
DOI  :  10.1088/1757-899X/502/1/012159

来源: IOP

【 摘 要 】

Helium forced flow cooling was demonstrated as a reliable way for superconducting (SC) magnets. For the large Cable-in-Conduit Conductors (CICC) in high magnetic field, supercritical helium forced flow cooling is utilized. A coiled sub-cooler for 4.5 K supercritical helium, which is the vital component of the system, has been designed and manufactured to supply required helium for the SC magnet. The coiled sub-cooler installed in the valve box of the SC magnet has been tested during the experiment process of SC magnet. In this paper, the design details and the heat transfer performance of the coiled sub-cooler are presented. The analysis of test results reflects the design principles for the coiled sub-coolers.