NUMERICAL AND EXPERIMENTAL STUDIESONAN ACTIVE MAGNETIC REGENERATIONREFRIGERATOR OPERATING NEAR ROOM TEMPERATURE

摘要

In this paper, numerical and experimental investigations on a magnetic refrigerator based upon thernactive magnetic regeneration (AMR) cycle operating near room temperature are presented. Arnnumerical 1D model based on the transient energy equations is proposed for modeling the heatrnexchange between the magnetocaloric material and the carrier fluid in the regenerator bed. Differentrnsteps of the AMR refrigeration cycle are analyzed in details. A simple case using gadolinium isrnevaluated. The obtained results including the temperature span, the coefficient of performance and therncooling power are presented and discussed. The experimental and numerical results are analyzed andrncompared with the data available in the literature.