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Analysis on the Colder Regenerator of 4.2K G-M Refrigerator

  • X. D. Xu
  • L. Wang
  • L. H. Gong
  • L. Zhang
Part of the Advances in Cryogenic Engineering book series (ACRE, volume 43)

Abstract

The real gas properties of helium, especially the enthalpy change between 30K and 4.2K for the 2.0MPa helium is lower than that for the 0.6MPa helium, result in that the temperature distribution in the colder regenerator of a multistage 4.2K G-M refrigerator forms a plateau, which is measured, and also verified by a numerical calculation. Based on the calculation result, a picture of helium mass in the regenerator void is presented in this paper. According to the movement of the helium, a three-cycle assumption is suggested.

Keywords

Expansion Process Compression Process Admission Process Refrigeration Cycle Cold Chamber 
These keywords were added by machine and not by the authors. This process is experimental and the keywords may be updated as the learning algorithm improves.

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References

  1. 1.
    T. Inaguchi etc.: “Two-stage Gifford-McMahon Cycle Cryocooler Operation at about 2K”, The 6th Cryocooler, Vol.2, p. 25–28, 1990.Google Scholar
  2. 2.
    Toshimi Satoh etc.: “Development of 1.5W 4K G-M Cryocooler with Magnetic Regenerator Material” Adv. in Cryo. Eng., Vol. 41, 1996.Google Scholar
  3. 3.
    Hong Chao-shen and Xu Xiangdong: “On the unique Features of the Low Temperature Regenerator”, Proceedings of 4th Joint Sino-Japanese on Cryocoolers and Concerned Topics, p. 6–13, 1993, Beijing.Google Scholar
  4. 4.
    Hong Chao-shen and Xu Xiangdong: “On the Thermodynamic cycle of the Low Temperature G-M Refrigerator”, Proceedings of ICEC15, 1994, Genova, Italy.Google Scholar

Copyright information

© Springer Science+Business Media New York 1998

Authors and Affiliations

  • X. D. Xu
    • 1
  • L. Wang
    • 1
  • L. H. Gong
    • 1
  • L. Zhang
    • 1
  1. 1.Cryogenic LaboratoryChinese Academy of SciencesBeijingP. R. China

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