一级相变材料LaFe11.6Si1.4是磁制冷应用中的重要磁热材料,其固有的磁滞和热滞对实际制冷循环性能有较大影响,然而现有文献对此尚未研究.本文基于考虑热滞影响的材料LaFe1 1.68i1.4的等场热容实验数据,建立考虑热滞效应的回热Ericsson制冷循环,揭示热滞、非平衡回热和冷热源温度等对制冷循环主要热力学性能参量的影响,应用数值计算方法,比较了考虑热滞与否时制冷循环的净制冷量、性能系数等性能参量.研究结果能为磁制冷机循环的优化参数设计提供有益的参考.
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