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Design concepts for a continuously rotating active magnetic regenerator.

Author(s) : BAHL C. R. H., ENGELBRECHT K., BJØRK R., et al.

Summary

Design considerations for a prototype magnetic refrigeration device with a continuously rotating AMR are presented. Building the AMR from stacks of elongated plates of the perovskite oxide material La(0.67)Ca(0.33-x)Sr(x)Mn(1.05)O(3), 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 may be 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.

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Pages: 2010-4

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Details

  • Original title: Design concepts for a continuously rotating active magnetic regenerator.
  • Record ID : 2011-0190
  • Languages: English
  • Source: 4th International Conference on Magnetic Refrigeration at Room Temperature (Thermag IV). Proceedings: Baotou, China, August 23-27, 2010.
  • Publication date: 2010/08/23

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