Development of Small Size Claude Cycle Helium Refrigerator with Micro Turbo-Expander

  • H. Izumi
  • S. Harada
  • K. Matsubara
  • S. Saito
Part of the Advances in Cryogenic Engineering book series (ACRE, volume 31)

Abstract

In the field of small size helium refrigerators, need for a maintenance free and vibration free system is rapidly increasing, especially for the application to cryoelectronic devices such as NMR-CT and Josephson computers. To meet this need, we have been developing a Claude cycle helium refrigerator (5W at 4.5K) with two-stage expansion micro-turbines. Other than the micro-turbines, compact size perforated- plate heat exchangers and a single-stage screw type compressor have been developed for the system. This paper describes design and test results of the major components of the system with an emphasis on the micro-turbine performance.

Keywords

Helium Refrigeration 

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References

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    D. B. Colyer, Miniature cryogenic refrigerator turbo-alternators, in: “Advances in Cryogenic Engineering, Vol. 14,” Plenum Press, New York (1969), p, 405.Google Scholar
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    S. Harada, et al, Heat transfer performance of perforated-plate heat exchanger, in: “Proc. of 31st Meeting of Cryo. Assoc. of Japan,” Cryo. Assoc. of Japan, Tokyo (1984), p. 46.Google Scholar
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    N. Arai, et al. Scroll and screw compressors: the latest compressor technology for air conditioning and refrigeration, Hitachi Review, 34: 6 (1985).Google Scholar

Copyright information

© Plenum Press, New York 1986

Authors and Affiliations

  • H. Izumi
    • 1
  • S. Harada
    • 1
  • K. Matsubara
    • 1
  • S. Saito
    • 2
  1. 1.Mechanical Engineering Research LaboratoryHitachi, Ltd.TsuchiuraJapan
  2. 2.Kasado WorksHitachi, Ltd.KudamatsuJapan

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