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Improvement of Two-Stage GM Refrigerator Performance Using a Hybrid Regenerator

  • G. Ke
  • H. Makuuchi
  • T. Hashimoto
  • A. Onishi
  • R. Li
  • T. Satoh
  • Y. Kanazawa
Part of the An International Cryogenic Materials Conference Publication book series (ACRE, volume 40)

Abstract

To improve the performance of two-stage GM refrigerators, a hybrid regenerator with magnetic materials of Er3Ni and ErNi0.9Co0.1 was used in the 2nd stage regenerator because of its large heat exchange capacity. The largest refrigeration capacity achieved with the hybrid regenerator was 0.95W at helium liquefied temperature of 4.2K. This capacity is 15.9% greater than the 0.82W refrigerator with only Er3Ni as the 2nd regenerator material. Use of the hybrid regenerator not only increases the refrigeration capacity at 4.2K, but also allows the 4K GM refrigerator to be used with large 1st stage refrigeration capacity, thus making it more practical.

Keywords

Heat Load Regenerator Material Magnetic Refrigeration Hybrid Regenerator High Specific Heat 
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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Copyright information

© Springer Science+Business Media New York 1994

Authors and Affiliations

  • G. Ke
    • 1
    • 2
  • H. Makuuchi
    • 1
  • T. Hashimoto
    • 1
  • A. Onishi
    • 2
  • R. Li
    • 2
  • T. Satoh
    • 2
  • Y. Kanazawa
    • 2
  1. 1.Department of Applied Physics Oh-okayamaTokyo Institute of TechnologyMeguro, TokyoJapan
  2. 2.Hiratsuka Research Lab.Sumitomo Heavy Industries, Ltd.Yuuhigaoka, Hiratsuka, KanagawaJapan

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