High Performance Cryogenic Turboexpanders

  • R. R. Agahi
  • B. Ershaghi
  • M. C. Lin
Part of the A Cryogenic Engineering Conference Publication book series (ACRE, volume 41)


The use of turboexpanders for deep cryogenic temperatures has been constrained because of thermal efficiency limitations. This limited thermal efficiency was mostly due to mechanical constraints. Recent improvements in analytical techniques, bearing technology, and design features have made it possible to design and operate turboexpanders at more favorable conditions, such as of higher rotational speeds. Several turboexpander installations in helium and hydrogen processes have shown a significant improvement in plant performance over non-turboexpander options.


Thermal Efficiency Electric Discharge Machine Wire Electric Discharge Machine High Rotational Speed Labyrinth Seal 
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  1. 1.
    Davis, Marcel; Physical Principals of Gas Liquefaction and Low Temperature Rectification, London (1949).Google Scholar
  2. 2.
    ASHRE Data Book (The American Society of Refrigeration Engineers), Vol.1, No.1, Section 45 (1959).Google Scholar
  3. 3.
    R. L. Powell, W. A. Blanpied, and D. O. Coffin, Journal of Research, National Bureau of Standards, Vol. 59, (1957).Google Scholar
  4. 4.
    J. C. Slater, Quantum Theory of Matter, McGraw-Hill Book Co., New York (1968).Google Scholar
  5. 5.
    R. R Agahi, B. Ershaghi, M. C. Lin, and A. Mansoori, Thermodynamic Behavior of Hydrogen/Natural Gas Mixture, 74th Annual GPA Convention, March 13, 1995.Google Scholar
  6. 6.
    J. S. Swearingen and J. Holm, Application of Turboexpanders for Energy Conservation, ASME 77-Pet-17, June 8, 1977.Google Scholar
  7. 7.
    F. Y. Zeidan, The Use of Flexure Pivot Bearings in High Speed and High Performance Turboexpanders, Turboexpander user Council, Houston, Texas, June 1995.Google Scholar

Copyright information

© Plenum Press, New York 1996

Authors and Affiliations

  • R. R. Agahi
    • 1
  • B. Ershaghi
    • 1
  • M. C. Lin
    • 1
  1. 1.Atlas Copco RotoflowGardenaUSA

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