Review on numerical modeling of active magnetic regenerators for room temperature applications

Kaspar Kirstein Nielsen, Jaka Tusek, Kurt Engelbrecht, Sandro Schopfer, Andrej Kitanovski, Christian Robert Haffenden Bahl, Anders Smith, Nini Pryds, Alojz Poredos

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    Abstract

    The active magnetic regenerator (AMR) is an alternative refrigeration cycle with a potential gain of energy efficiency compared to conventional refrigeration techniques. The AMR poses a complex problem of heat transfer, fluid dynamics and magnetic fields, which requires detailed and robust modeling. This paper reviews the existing numerical modeling of room temperature AMR to date. The governing equations, implementation of the magnetocaloric effect (MCE), fluid flow and magnetic field profiles, thermal conduction etc. are discussed in detail as is their impact on the AMR cycle. Flow channeling effects, hysteresis, thermal losses and demagnetizing fields are discussed and it is concluded that more detailed modeling of these phenomena is required to obtain a better understanding of the AMR cycle.
    Original languageEnglish
    JournalInternational Journal of Refrigeration
    Volume34
    Issue number3
    Pages (from-to)603-616
    ISSN0140-7007
    DOIs
    Publication statusPublished - 2011

    Keywords

    • Magnetic refrigeration
    • Fuel Cells and Hydrogen

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