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A seven-watt G-M/J-T 4 K helium refrigerator.

Author(s) : YANG G. D., HE Z. H., JIANG W., et al.

Summary

A seven-watt G-M (Gifford-McMahon)/J-T (Joule-Thomson) helium refrigerator at 4 K was designed and fabricated at the Institute of Cryogenics and Superconductivity Technology in Harbin Institute of Technology. The refrigerator uses two single-stage G-M cryocoolers for precooling the J-T flow circuit. It mainly consists of five Linde-type heat exchangers and an adjustable J-T valve. The compression system utilizes the G-M type helium compressors to supply the helium flow for the G-M cryocoolers and the J-T circuit. The paper describes the design and optimization of the K G-M/J-T refrigerator in detail. The refrigerator can also be operated as a helium liquefier with the production of 36-litre per day.

Details

  • Original title: A seven-watt G-M/J-T 4 K helium refrigerator.
  • Record ID : 2006-1055
  • Languages: English
  • Source: Cryogenics and refrigeration. Proceedings of ICCR 2003.
  • Publication date: 2003/04/22

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