Journal
JOURNAL OF MAGNETISM AND MAGNETIC MATERIALS
Volume 322, Issue 21, Pages 3324-3328Publisher
ELSEVIER SCIENCE BV
DOI: 10.1016/j.jmmm.2010.06.017
Keywords
Halbach cylinder; Magnetic field; Permanent magnet flux source; Magnetic refrigeration
Funding
- Danish Council for Strategic Research [2104-06-0032]
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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. (C) 2010 Elsevier B.V. All rights reserved.
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