【摘要】 本文借助COMSOL多物理场耦合软件，构建了二维瞬态平板磁制冷微元模型和热电磁复合制冷微元模型，考察了热电臂厚度、电流、运行频率、外界对流换热系数对复合制冷性能的影响。模拟结果显示，在大多数工况下热电磁复合模型的比制冷功均大于磁制冷模型的比制冷功率；改变不同几何和运行参数对复合制冷性能有不同的影响。在研究工况范围内，改变热电臂厚度（0.05～0.5 mm）、电流（0.4～0.8 A）、运行频率（0.5～4 Hz）和对流换热系数(500～2000 W·m^-2·K^-1)，热电磁复合制冷微元模型相比于平板磁制冷微元模型，制冷功率密度最大提高分别为2.05倍、2.12倍、2.68倍、1.87倍。本研究对后续开展热电磁复合制冷系统机理研究提供重要指导。更多还原

【Abstract】 In this paper, a two-dimensional transient flat-plate magnetic refrigeration micro-element model and a hybrid refrigeration micro-element model combining thermoelectric refrigeration with magnetic refrigeration are constructed by means of COMSOL Multiphysics 5.5. The effects of thermocouple thickness, input current, operating frequency, and external convection heat transfer coefficient on the performance of the hybrid refrigeration were investigated. The simulation results show that, under most operating conditions, the specific cooling power of the hybrid refrigeration model is greater than that of the magnetic refrigeration model. Changing different geometric and operating parameters has different effects on the performance of hybrid refrigeration. Within the research conditions, by changing the thickness of the thermocouple（0.05～0.5 mm）, input current（0.4～0.8 A）, operating frequency（0.5～4 Hz）, and convective heat transfer coefficient(500～2000W·m^-2·K^-1), compared with the flat-plate magnetic refrigeration, the hybrid refrigeration has the maximum increase in cooling power density is 2.05 times, 2.12 times, 2.68 times, and 1.87times, respectively. This study has an important reference value for the follow-up research on the mechanism of the hybrid refrigeration system combining thermoelectric refrigeration with magnetic refrigeration.更多还原