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Prototype of a Gd-based rotating magnetic refrigerator for work around room temperature.

Author(s) : COELHO A. A., GAMA S., MAGNUS A., et al.

Summary

The authors built a prototype of a magnetic refrigerator with an active magnetic regenerator in a wheel form, using Gd as the magnetocaloric material and using an electromagnet as a field source. The wheel was built on PVC with 6 cavities connected to the the axis of the wheel through holes for the heat exchange fluid (ethyl alcohol). Holes and cavities on the axis direct the fluid to the regenerator cavities according to their angular position. This is a simple device built with low cost materials. Test of the prototype with null heat load for an applied field of 2.3 T allowed the authors to obtain a difference of temperature between the ambient and the cold heat exchanger of 11°C. Typical time interval for temperature lowering is 7 minutes, with full temperature stabilization being achieved after 20 minutes.

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Pages: 2009-3

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Details

  • Original title: Prototype of a Gd-based rotating magnetic refrigerator for work around room temperature.
  • Record ID : 2009-1625
  • Languages: English
  • Source: 3rd International Conference on Magnetic Refrigeration at Room Temperature
  • Publication date: 2009/05/11

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