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Performance evaluation of an active magnetic regenerator for cooling applications. 1. Experimental analysis and thermodynamic performance.

Author(s) : TREVIZOLI P. V., NAKASHIMA A. T., PEIXER G. F., et al.

Type of article: Article, IJR article

Summary

In this first part of a two-part paper, a new active magnetic regenerator (AMR) laboratory apparatus is presented and evaluated. The setup is composed of a nested Halbach cylinder magnetic circuit (maximum magnetic flux density of 1.69 T) assembled in phase with a double effect displacer that provides the cold and hot blows to the regenerator. A single packed-bed regenerator with 195.5?g of gadolinium spheres is used in a discontinuous (i.e., reciprocating) cycle. The system performance is evaluated in terms of characteristic curves (i.e., cooling capacity as a function of temperature span), coefficient of performance and second-law efficiency as a function of the utilization factor and operating frequency. Maximum values of COP have been identified for a given temperature span. The maximum values of second-law efficiency were obtained at system temperature spans between 15 and 20?K.

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Pages: 192-205

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Details

  • Original title: Performance evaluation of an active magnetic regenerator for cooling applications. 1. Experimental analysis and thermodynamic performance.
  • Record ID : 30019905
  • Languages: English
  • Source: International Journal of Refrigeration - Revue Internationale du Froid - vol. 72
  • Publication date: 2016/12

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