A MATERIAL SCREENING TECHNIQUE FOR OPTIMUM PERFORMANCE OF AN AMR

摘要

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