An optimized magnet for magnetic refrigeration

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    A magnet designed for use in a magnetic refrigeration device is presented. The magnet is designed by applying two general schemes for improving a magnet design to a concentric Halbach cylinder magnet design and dimensioning and segmenting this design in an optimum way followed by the construction of the actual magnet. The final design generates a peak value of 1.24 T, an average flux density of 0.9 T in a volume of 2 L using only 7.3 L of magnet, and has an average low flux density of 0.08 T also in a 2 L volume. The working point of all the permanent magnet blocks in the design is very close to the maximum energy density. The final design is characterized in terms of a performance parameter, and it is shown that it is one of the best performing magnet designs published for magnetic refrigeration.
    Original languageEnglish
    JournalJournal of Magnetism and Magnetic Materials
    Issue number21
    Pages (from-to)3324-3328
    Publication statusPublished - 2010


    • Magnetic refrigeration
    • Fuel Cells and hydrogen


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