Variable Density MLI Test Results

  • R. J. Stochl
  • P. J. Dempsey
  • K. R. Leonard
  • G. E. McIntosh
Part of the A Cryogenic Engineering Conference Publication book series (ACRE, volume 41)

Abstract

A previous CEC paper reviewed MLI fundamentals and discussed a layer by layer computational method set up to take advantage of variable density separators to optimize performance. The work has advanced both conceptually and experimentally since 1993 and appears to be nearing commercial feasibility. In this paper we update and focus the MLI review, discuss current variable configurations, and compare experimental and predicted Q/A values.

Keywords

Layer Density Heat Leak Solid Conduction NASA Lewis Research Commercial Feasibility 
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

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    G.E. McIntosh, Layer by layer MLI calculation using a separated mode equation, in: “Advances in Cryo. Eng.,” Vol. 39B, Plenum Press, New York (1994).Google Scholar
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    E.M.W. Leung et al, Techniques for reducing radiation heat transfer between 77 and 4.2 K, in: “Advances in Cryo. Eng.,” Vol. 25, Plenum Press, New York (1980).Google Scholar
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    I.E. Spradley et al. Experimental studies of MLI systems at very low boundary temperatures, in: “Advances in Cryo. Eng.,” Vol 35A, Plenum Press, New York (1990).Google Scholar
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    D.C. Hamilton & W.R. Morgan, “Radiant Interchange Configuration Factors,” NACA TN 2836 (1952).Google Scholar

Copyright information

© Plenum Press, New York 1996

Authors and Affiliations

  • R. J. Stochl
    • 1
  • P. J. Dempsey
    • 1
  • K. R. Leonard
    • 2
  • G. E. McIntosh
    • 2
  1. 1.NASA Lewis Research CenterClevelandUSA
  2. 2.Cryogenic Technical Services, Inc.BoulderUSA

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