A material screening technique for optimum performance of an AMR.

The selection of an optimum magnetocaloric material is a challenge in the development of magnetic refrigeration systems. In this study, two MnFeP1-xAsx alloys with the same transition temperature, but different specific heat and adiabatic temperature change are investigated. The two alloys are used to create active regenerators and subsequently tested, experimentally and numerically, over a wide range of operating parameters. The results show that the material with smaller peak and wider magnetic entropy change curve, outperforms the material with larger peak but narrower magnetic entropy change curve. To further investigate impacts of material properties on performance, a range of material metrics are compared against simulated performance. A strong linear correlation is observed between the maximum RCP and the maximum exergetic cooling power of 12 materials tested in this study.