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A Liquid-Nitrogen-Operated Refrigerator for Temperatures Below 77°K

  • F. F. Chellis
  • W. H. Hogan
Part of the Advances in Cryogenic Engineering book series (ACRE, volume 9)

Abstract

Most devices refrigerated to below 20°K are provided with radiation shielding at some higher temperature, say 77°K, to intercept the radiation heat load from normally room-temperature bounding surfaces, and the refrigeration required at the radiation shield is generally many times that required at the lower temperatures. This is, of course, the reason for using a shield. In many applications, such as cryopumped space simulation chambers or helium liquefiera, the refrigeration for the radiation shield is provided by a liquid-nitrogen phase change.

Keywords

Heat Exchanger Heat Input Pressure Vessel Radiation Shield Intermediate Volume 
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.
    E. F. Yendall, in Advances in Cryogenic Engineering, Vol. 2, Plenum Press, New York (1960), p. 188.CrossRefGoogle Scholar

Copyright information

© Springer Science+Business Media New York 1964

Authors and Affiliations

  • F. F. Chellis
    • 1
  • W. H. Hogan
    • 1
  1. 1.Arthur D. Little, Inc.CambridgeUSA

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