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Thermodynamics of magnetic refrigeration.

Author(s) : KITANOVSKI A., EGOLF P. W.

Type of article: Article, IJR article

Summary

A comprehensive treatment of the thermodynamics of cyclic magnetic refrigeration processes is presented in this article. It first reviews the work, heat and internal energy of a magnetized specimen in a magnetic field, then it gives a list of the thermodynamic potentials. These are based on the very recent discovery of an alternative Kelvin force. It is shown that this force is compatible with the internal energy proposed by Landau and Lifshitz. New formulas for the specific enthalpies are presented. Cyclic processes are discussed in detail, e.g. the Brayton, Ericsson and Carnot cycles. Magnetic refrigeration and magnetic heat pump cycles are preferably designed by applying the cascade or/and regeneration principle. Cascade systems allow wider temperature ranges to be obtained. The main objective of this article is to yield a theoretical basis for an optimal design of new magnetic refrigeration and heat pump devices.

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Format PDF

Pages: 3-21

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Details

  • Original title: Thermodynamics of magnetic refrigeration.
  • Record ID : 2006-0773
  • Languages: English
  • Source: International Journal of Refrigeration - Revue Internationale du Froid - vol. 29 - n. 1
  • Publication date: 2006/01

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