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, cilt.21, sa.3, ss.1350016, 2013 (ESCI)

  • Yayın Türü: Makale / Tam Makale
  • Cilt numarası: 21 Sayı: 3
  • Basım Tarihi: 2013
  • Dergi Adı: INTERNATIONAL JOURNAL OF AIR-CONDITIONING AND REFRIGERATION
  • Derginin Tarandığı İndeksler: Emerging Sources Citation Index (ESCI), Scopus
  • Sayfa Sayıları: ss.1350016
  • Yıldız Teknik Üniversitesi Adresli: Evet

Özet

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.