Size and Power Requirements of 4.2°K Refrigerators

  • T. R. Strobridge
  • D. B. Chelton
Part of the Advances in Cryogenic Engineering book series (ACRE, volume 12)


Liquid helium in an open system frequently is used to provide cooling at 4.2°K. In lieu of liquid helium supply systems which may be impractical for many applications (particularly, mobile, airborne, and space requirements), a refrigerator may be required to maintain the temperature of the apparatus. A survey has been made to determine the physical characteristics of such refrigerators. These characteristics are important because in practice they may limit the applicability and operating time of the equipment. Although the data acquired through the survey show considerable scatter, the expected trends can be detected and attempts have been made to establish guides by which the weight, volume, and power requirements may be estimated.


Liquid Helium Power Requirement Thermodynamic Cycle Refrigeration Capacity Cryogenic Engineer 
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Copyright information

© Springer Science+Business Media New York 1967

Authors and Affiliations

  • T. R. Strobridge
    • 1
  • D. B. Chelton
    • 1
  1. 1.Cryogenics Division-NBS Institute for Materials ResearchBoulderUSA

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