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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

Heat Exchanger Plate Heat Exchanger Turbine Wheel Heat Transfer Capacity Helium Refrigerator 
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

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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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    N. Tsumaki, et al, Experimental investigation on a floating bush gas bearing, in “Proc. of JSLE Intl. Tribology Conf.,” JSLE, Tokyo (1985), p. 779.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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