Design concepts for a continuously rotating active magnetic regenerator

Christian Robert Haffenden Bahl, Kurt Engelbrecht, Rasmus Bjørk, Dan Eriksen, Anders Smith, Kaspar Kirstein Nielsen, Nini Pryds

    Research output: Contribution to journalConference articleResearchpeer-review

    Abstract

    Design considerations for a prototype magnetic refrigeration device with a continuously rotating AMR are presented. Building the active magnetic regenerator (AMR) from stacks of elongated plates of the perovskite oxide material La0.67Ca0.33−xSrxMn1.05O3, gives both a low pressure drop and allows grading of the Curie temperature along the plates. This may be accomplished by a novel technique where a compositionally-graded material is tape cast in one piece. The magnet assembly is based on a novel design strategy, to create alternating high- and low magnetic field regions within a magnet assembly. Focus is on maximising the magnetic field in the high field regions but also, importantly, minimising the flux in the low field regions. The design is iteratively optimised through 3D finite element magnetostatic modelling.
    Original languageEnglish
    JournalInternational Journal of Refrigeration
    Volume34
    Issue number8
    Pages (from-to)1792-1796
    ISSN0140-7007
    DOIs
    Publication statusPublished - Dec 2011
    Event23rd IIR International Congress of Refrigeration - Prague, Czech Republic
    Duration: 21 Aug 201126 Aug 2011
    Conference number: 23
    http://www.icr2011.org/

    Conference

    Conference23rd IIR International Congress of Refrigeration
    Number23
    Country/TerritoryCzech Republic
    CityPrague
    Period21/08/201126/08/2011
    Internet address

    Keywords

    • Magnetic refrigeration
    • Magnet
    • Design
    • Optimization
    • Model

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