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Conference paper

Generating the optimal magnetic field for magnetic refrigeration

In Proceedings of the 7th Iif-iir International Conference on Magnetic Refrigeration — 2016

By Bjørk, Rasmus1,2; Insinga, Andrea Roberto1,2; Smith, Anders1; Bahl, Christian1,2

From

Department of Energy Conversion and Storage, Technical University of Denmark1

Electrofunctional materials, Department of Energy Conversion and Storage, Technical University of Denmark2

In a magnetic refrigeration device the magnet is the single most expensive component, and therefore it is crucially important to ensure that an effective magnetic field as possible is generated using the least amount of permanent magnets. Here we present a method for calculating the optimal remanence distribution for any desired magnetic field.

The method is based on the reciprocity theorem, which through the use of virtual magnets can be used to calculate the optimal remanence distribution. Furthermore, we present a method for segmenting a given magnet design that always results in the optimal segmentation, for any number of segments specified.

These two methods are used to determine the optimal magnet design of a 12-piece, two-pole concentric cylindrical magnet for use in a continuously rotating magnetic refrigeration device.

Language: English
Publisher: International Institute of Refrigeration
Year: 2016
Proceedings: 7th IIF-IIR International Conference on Magnetic Refrigeration
Types: Conference paper
ORCIDs: Bjørk, Rasmus , Insinga, Andrea Roberto , Smith, Anders and Bahl, Christian

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