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Optimal Temperature -Entropy Curves for Magnetic Refrigeration

  • C. R. Cross
  • J. A. Barclay
  • A. J. DeGregoria
  • S. R. Jaeger
  • J. W. Johnson
Part of the A Cryogenic Engineering Conference Publication book series (ACRE, volume 33)

Abstract

Magnetic refrigeration utilizes the temperature dependent entropy change produced in a ferromagnetic or paramagnetic material when subjected to a change in magnetic field. By blending different materials together the temperature-entropy (T-S) behavior of the refrigerant may be tailored to maximize system performance. Optimal T-S diagrams for magnetic refrigerators using Carnot, Ericsson and Brayton cycles were determined and compared to results of thermodynamic numerical models.

Keywords

Heat Transfer Fluid Refrigeration Cycle Magnetic Refrigerant Heat Rejection Gadolinium Gallium Garnet 
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

  1. 1.
    T. Hasimoto et al, New application of complex type of magnetic materials to the magnetic refrigerant in the Ericsson magnetic refrigerator, preprint, to be published in J. of APIA. Physics (1987)Google Scholar
  2. 2.
    J. A. Barclay, The theory of an active magnetic regenerative refrigerator, in: NASA report NASA-CP2287 (1983).Google Scholar
  3. 3.
    Taussig et al, Magnetic refrigeration based on magnetically active regeneration, in: “Proc. 4th Intl. Cryocooler Conf., Easton, Maryland (1986).Google Scholar
  4. 4.
    Frank W. Schmidt and A. John Willmott, chapter 8, in: “Thermal Energy Storage and Regeneration”, Hemisphere Publishing Corporation, Washington D.C. (1981).Google Scholar

Copyright information

© Springer Science+Business Media New York 1988

Authors and Affiliations

  • C. R. Cross
    • 1
  • J. A. Barclay
    • 1
  • A. J. DeGregoria
    • 1
  • S. R. Jaeger
    • 1
  • J. W. Johnson
    • 1
  1. 1.Astronautics Technology CenterMadisonUSA

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