室温磁制冷技术的研究进展

发布时间：2018-08-28 10:16

【摘要】：室温磁制冷具有绿色环保、内禀高效、低噪音与低振动等优点,有望成为室温制冷领域中的一种重要选择.本文首先简述了磁热效应等基本概念,阐述了磁制冷热力学循环,重点介绍由基本循环构成的复合式磁制冷循环、主动磁制冷循环以及耦合气体回热式制冷的主动磁制冷循环等.随后描述了室温磁制冷系统的不同维度数值模型的特点,介绍了模型中磁热效应、多层主动磁回热器、退磁效应等重要项的表述方式及其他因子对系统性能的影响.根据室温系统运动部件和运动方式的不同,将室温磁制冷样机细化为四类系统,包括往复磁体式、往复回热器式、旋转磁体式和旋转回热器式.结合样机的近期实验进展,分析了不同类别室温系统的结构、运行和性能等特性.最后,总结了室温磁制冷技术的未来发展趋势.
[Abstract]:Room temperature magnetic refrigeration has the advantages of green environmental protection, intrinsic high efficiency, low noise and low vibration. It is expected to be an important choice in the field of room temperature refrigeration. In this paper, the basic concepts such as magnetocaloric effect are briefly introduced, the thermodynamic cycle of magnetic refrigeration is expounded, and the compound magnetic refrigeration cycle composed of basic cycle is introduced emphatically. Active magnetic refrigeration cycle and coupled gas regenerative refrigeration active magnetic refrigeration cycle. Then, the characteristics of different dimensional numerical models of room temperature magnetic refrigeration system are described. The expressions of important terms such as magnetocaloric effect, multi-layer active magnetic regenerator and demagnetization effect in the model are introduced, as well as the influence of other factors on the performance of the system. According to the different moving parts and motion modes of room temperature system, the room temperature magnetic refrigeration prototype is divided into four kinds of systems, including reciprocating magnet type, reciprocating regenerator type, rotating magnet type and rotary regenerator type. Based on the recent experimental progress of the prototype, the structure, operation and performance of different room temperature systems are analyzed. Finally, the future development trend of room temperature magnetic refrigeration technology is summarized.
【作者单位】：中国科学院理化技术研究所低温工程学重点实验室;中国科学院大学;
【基金】：国家自然科学基金(批准号:51322605,51676198)资助的课题~~
【分类号】：TB66

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