应用lAngEVIn函数的近似解、最优控制论及热力学分析方法对以铁磁材料为工质的回热ErICSSOn制冷循环性能参数进行优化分析,揭示有限速率热传导、不平衡回热、回热器效率及热源间热漏等多种不可逆因素对制冷循环性能的影响,所得结论可为室温磁制冷机的优化设计提供理论参考.Based on approximate solution of the Langevin function,the optimal control theory and thermodynamic analysis methods,the optimal performance characteristics of regenerative Ericsson refrigeration cycle using ferromagnetic materials as the working substance is investigated and the influence of irreversibilities including finite-rate heat transfer,nonperfect regeneration,regenerator's efficiency,heat leak between the heat sources and so on are revealed.The conclusion obtained can provide some theoretical reference for the optimal design of room-temperature magnetic refrigerators.国家自然科学基金(No.50776074
