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Modelling and design of magnetic refrigeration systems operating at room temperature.

Modélisation et conception de systèmes de réfrigération magnétique autour de la température ambiante.

Author(s) : ROUDAUT J.

Type of monograph: Thesis

Summary

PhD thesis in the electrical engineering field, University of Grenoble. Magnetic refrigeration is breakthrough technology used to produce cold, does not use greenhouse gases and is mre efficient than vapour-compression refrigeration. Magnetic refrigeration is based on the magnetocaloric effect, which is a property enabling certain materials to change temperature when subjected to a variation in the magnetic field. Critical analysis of existing prototypes was performed, and new performance criteria enabling effective comparison of such prototypes were put forward. A digital model for heat transfer inside magnetic refrigerators was developed in order to investigate the behaviour of the refrigerators under transient and steady state conditions. Refined analysis of the source of the magnetic field and its interaction with the material made it possible to propose design and sizing rules with a view to obtaining a high-performance system.
Extract from the table of contents: Magnetic refrigeration: magnetocaloric effect and materials; magnetic refrigeration systems; investigation of active magnetic regenerators; investigation of magnetic field sources; towards design of a magnetic refrigeration system.

Details

  • Original title: Modélisation et conception de systèmes de réfrigération magnétique autour de la température ambiante.
  • Record ID : 30003705
  • Languages: French
  • Publication: Université de grenoble, eeats - France/France
  • Publication date: 2012/03/27

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