Thermodynamic analysis and performance assessment of a cascade active magnetic regenerative refrigeration system


Genceli H. , Dincer İ. , Güngör A.

INTERNATIONAL JOURNAL OF AIR-CONDITIONING AND REFRIGERATION, vol.21, no.3, pp.1350016, 2013 (Journal Indexed in SCI Expanded)

  • Publication Type: Article / Article
  • Volume: 21 Issue: 3
  • Publication Date: 2013
  • Title of Journal : INTERNATIONAL JOURNAL OF AIR-CONDITIONING AND REFRIGERATION
  • Page Numbers: pp.1350016

Abstract

In the present study, a thermodynamic model is proposed to analyze and assess the performance, through energy and exergy, of a cascade active magnetic regenerative (AMR) refrigerator operation a regenerative Brayton cycle. This cascade refrigeration system works with GdxTb1–x alloys as magnetic materials where the composition of the alloy varies for different stages. In this model, the heat transfer fluid considered is a water– glycol mixture (50% by weight). The refrigeration capacity, total power consumption, coefficients of performance (COP), exergy efficiency and exergy destruction rate of a cascade AMR refrigeration (AMRR) system are determined. To understand the system performance more comprehensively, a parametric study is performed to investigate the effects of several important design parameters on COP and exergy efficiency of the system.