期刊论文详细信息
JOURNAL OF MAGNETISM AND MAGNETIC MATERIALS 卷:322
An optimized magnet for magnetic refrigeration
Article
Bjork, R.1  Bahl, C. R. H.1  Smith, A.1  Christensen, D. V.1  Pryds, N.1 
[1] Tech Univ Denmark, Riso Natl Lab Sustainable Energy, Fuel Cells & Solid State Chem Div, DK-4000 Roskilde, Denmark
关键词: Halbach cylinder;    Magnetic field;    Permanent magnet flux source;    Magnetic refrigeration;   
DOI  :  10.1016/j.jmmm.2010.06.017
来源: Elsevier
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【 摘 要 】

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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