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A 4.0°K Single-Engine Cycle Helium Refrigerator

  • R. N. Meier
  • R. B. Currie
Conference paper
Part of the Advances in Cryogenic Engineering book series (ACRE, volume 13)

Abstract

Claude-cycle helium refrigerators have in the past used two or more expansion engines, or a single expander in conjunction with liquid nitrogen precooling, to provide refrigeration[1,2]. This paper describes a new modified Claude-cycle helium refrigerator, in which a single reciprocating expansion engine is the sole source of refrigeration, Refrigeration capacity is at least 1 W at 4.0°K, with additional refrigeration at 30° K. available for heat stationing. After initial system charging and clean-up, operation of the refrigerator is completely automatic, both for cooldowa and for steady-state operation. The system was designed to provide for redundancy of the expander and/or compressor, with automatic switchover in case of component degradation. That is, a spare component can be installed in the system, ready for immediate use when required. Where redundancy is not required, the system can be operated at full load without a redundant expander or compressor.

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References

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    C.E. Witter, in; Advances in Crvogenic Engineering, Vol. 11, Plenum Press, New York (1966), p. 107.Google Scholar
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    K. Zeitz and R. N. Meier, in: Low Temperature Refrigeration, W. H. Hogan and G. Klipping, ed., Boston Technical Publishers, Inc., Cambridge, Mass. (1967).Google Scholar
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    B. K. Woolfenden, Proc. IRIS, 7(1):69 (1962).Google Scholar
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    J. M. Geist and P. K. Lashmet, in: Advances in Cryogenic Engineering, Vol. 6, Plenum-Press, New York (1961), p. 73.Google Scholar

Copyright information

© Springer Science+Business Media New York 1995

Authors and Affiliations

  • R. N. Meier
    • 1
  • R. B. Currie
    • 1
  1. 1.Air Products and Chemicals, Inc.AllentownUSA

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