中文摘要：

据朗之万理论导出铁磁材料的磁化强度和熵表式,构建以铁磁材料为工质的不可逆回热Ericsson制冷循环,分析和评估该制冷循环的热经济及热力学性能,揭示有限热源、回热器效率、外磁场强度等参量对循环热经济性能及其相应的制冷率和性能系数等的定量影响。所得结果为实际磁制冷机循环参数优化设计提供参考。

英文摘要：

According to the Langevin theory,the expressions of magnetization and entropy of ferromagnetic material were derived and then an irreversible regenerative Ericsson refrigeration cycle using ferromagnetic material as the working substance is set up.The thermoeconomic and thermodynamic performance of the refrigeration cycle are analyzed and evaluated.The influences of finite heat capacity rate of the low temperature heat reservoir,the regenerator efficiency,applied magnetic field on the thermoeconomic performance as well as and the corresponding cooling rate and coefficient of performance are revealed.The results obtained may provide some parameter reference for the optimal design of actual magnetic refrigerators.