Abstract
The first-order magnetic transition material LaFeSiMn(H) is used to create multi-stage regenerators to investigate the importance of regenerator and magnet design on magnetocaloric refrigeration performance. Aspect ratio, magnetic field strength, particle size, and staging are varied while keeping overall span and material mass at a constant level. Tests carried out on these regenerators show that the regenerator and magnetic systems play a key role in determining the performance of a magnetocaloric refrigerator. A one-dimensional numerical machine model using both measured material data and data reconstructed from a mathematical material model is used to predict test results. The machine model and material model make predictions with less than 5% average error over the range of experimental parameters.
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