Advances in Shall Joule-Thomson Coolers

  • Ralph C. Longsworth
Part of the Advances in Cryogenic Engineering book series (ACRE, volume 35)


Considerable work has been done on the development of a new type of heat exchanger for Joule Thomson, JT, coolers which is referred to as a matrix-tube heat exchanger. This has permitted coolers to be built that are smaller than conventional finned tube heat exchangers and has made it easier to build multistage and multi circuit heat exchangers.

This paper discusses some characteristics of JT cooling and describes a number of different types of heat exchangers along with typical applications. Specific information is given on the size and cooling characteristic of matrix tube type heat exchangers.


Heat Exchanger Finned Tube Tube Heat Exchanger Demand Flow Stirling Cycle 
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  1. 1.
    R.C. Longsworth and B.K. Gibson “Characteristics of Open-Cycle Coolers as Applied to Lightweight IR Detector Systems” Proc. of 17th National Infrared Information Symposium, Monterey, CA May 1969.Google Scholar
  2. 2.
    AFFDL-TR-73–149 Vol. 1 Proc. of Cryogenic Cooler Conference, USAF Academy, Colorado Springs, CO, October 1973.Google Scholar
  3. 3.
    C.K. Chan “Performance of Long Life Joule Thomson Cryocoolers” Proc. of Second Interagency Meeting on Cryocoolers, David Taylor NSR&D Center, Annapolis, MD July 1987, p. 135–143.Google Scholar
  4. 4.
    B. Benedict “Inspect Power Requirements for Several Hybrid J-T Cryocooler Configurations Designed for Long Lifetime Space Applications” Proc of the Second Interagency Meeting on Cryocoolers, David Taylor, NSR&D Center Annapolis, MD July 1987, p. 261–273.Google Scholar
  5. 5.
    J.H. Geist & P.K. Lashmet, “Miniature Joule Thomson Refrigeration Systems” Vol. 5, Plenum Press, NY 1960 p. 324–331.Google Scholar
  6. 6.
    APD Cryogenics Inc., Allentown, PA.Google Scholar
  7. 7.
    MMR Technologies, Inc. Mountain View, CA.Google Scholar
  8. 8.
    J.L. Hughes and K.C. Herr. Hughes and K.C. Herr, “Mariner Mars 1969 Infrared Spectrometer: Gas Delivery System and Joule-Thomson Cryostat ” Cryogenics, p. 513–519, Sept. 1973Google Scholar
  9. 9.
    W.A. Little, “Scaling of Miniature Cryocoolers to Microminiature Size”, Applications of Closed-Cycle Cryocoolers to Small Superconductivity Devices, NBS SP-508, April 1978, p. 75–80.Google Scholar
  10. 10.
    W.A. Steyert and R.C. Longsworth, “Heat Exchanger For a Fast Cooldown Cryostat”, US Patent, 4,781,033, Nov. 1988.Google Scholar

Copyright information

© Springer Science+Business Media New York 1990

Authors and Affiliations

  • Ralph C. Longsworth
    • 1
  1. 1.APD Cryogenics IncAllentownUSA

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