Effective Thermal Conductivity and Multilayered Insulation

  • M. Adelberg
Part of the Advances in Cryogenic Engineering book series (ACRE, volume 12)


Multilayered insulation is receiving increasing attention because of the expanded interest in cryogens. Current practice employs an “effective thermal conductivity” parameter k eff for a number of applications. This parameter may be considered a logical extension of the thermophysical property known as thermal conductivity, such as used for solid, liquid or gaseous materials. Both are a measure of a material’s ability to transfer energy and may be defined for steady-state, one-dimensional flow by
$$k \equiv \frac{{q\delta }}{{A({T_{H}} - {T_{C}})}}$$
From (1), k may be also uniquely defined for multilayered insulators, since all terms for the right-hand side may be measured.


Heat Transfer Rate Effective Thermal Conductivity Effective Conductivity Parallel Conduction Gaseous Material 
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  1. 1.
    J. B. Romero, D. W. Smith, and R. E. Dod, in: Advances in Cryogenic Engineering, Vol. 11, Plenum Press, New York (1966), p. 231.CrossRefGoogle Scholar
  2. 2.
    J. B. Romero and D. W. Smith, Personal communication (Sept. 20, 1965).Google Scholar
  3. 3.
    M. Adelberg, in: Applied Cryogenic Engineering, J. Wiley & Sons, New York (1962), Chap. 13.Google Scholar

Copyright information

© Springer Science+Business Media New York 1967

Authors and Affiliations

  • M. Adelberg
    • 1
  1. 1.Sherman OaksUSA

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