Abstract
Active Magnetic Refrigeration (AMR) is a complex multiphysical process that requires optimisation. A revised description of the analytical formulations is proposed, starting from the essentials of the magnetocaloric effect. Each physical aspect has been extensively investigated, including the actual magnetic field inside the ferromagnetic domain. An AMR test bench was modelled using a 3D magnetostatic finite-element model, thermofluidic finite-volume models (2D and 3D), and a 1.5D semi-analytical model. Different boundary conditions were simulated to understand the operation of the AMR system. Based on the temperature histories, an agreement was found between the models and the experimental results. In addition to its flexibility and simplicity, the 1.5D model had the lowest computation time of approximately 1.2 s cycle-1. This makes it an excellent tool for the optimal design of an active magnetocaloric device.
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