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磁制冷是一种节能环保的制冷技术, 具有广阔的应用前景. 目前, 基于主动磁回热循环的磁制冷系统被广泛研究并诞生了多个原型制冷机. 然而, 这些系统主要采用流体换热, 导致系统存在工作频率低、回热损失大、子部件设计复杂等问题, 使得制冷机成本升高和效率降低. 针对上述问题和难点, 引入固态传热增强机制和全固态磁制冷系统模型设计及优化已成为近年来研究的热点. 本文综述了全固态磁制冷系统的两类物理模型的研究进展, 即基于热二极管(电控热二极管和磁控热二极管)的全固态磁制冷模型和基于高热导率材料元件的全固态磁制冷模型. 与传统主动磁回热制冷模型进行比较分析, 表明全固态磁制冷具有更大的应用潜力. 最后, 对未来全固态磁制冷技术的研究进行了分析和展望.Magnetic refrigeration is a kind of energy-saving, environment-friendly and intrinsically-high-efficient refrigeration technology, which has a wide application prospect. At present, the magnetic refrigeration systems based on active magnetic regenerator cycle have been widely studied and many prototypes of refrigerators have been developed. However, fluids and gases are mainly applied to heat exchange in these systems, which brings some problems such as low operating frequency, large regenerative loss, and complicated sub-component design. These problems increase the cost and reduce the efficiency of magnetic refrigerators. In view of the above problems and challenges, researchers try to introduce the solid-state heat transfer enhancement mechanism, and to design and optimize the full-solid-state magnetic refrigeration system model. In this paper, the development process of magnetic refrigeration technology at room temperature is briefly introduced at first. And the reasons for the low operating frequency and efficiency of the magnetic refrigerator, caused by using fluids for heat exchange, are analyzed. Then, two types of solid-state heat exchange media are briefly described, which are thermal diodes (i.e., electric-field-controlled thermal diode and magnetic-field-controlled thermal diode) and high thermal-conductivity material elements. In this paper we review the research progress of the full-solid-state magnetic refrigeration model based on thermal diodes and high thermal-conductivity material elements. Some key items for these models are described in detail, such as the architectural design concept, physical mechanism and working principle, the main performance simulation results of these systems and their physical change rules. Then, the main performances (i.e. operating frequency, specific cooling power, temperature span, and coefficient of performance) of the full-solid-state magnetic refrigeration model and the AMR model are summarized and comparatively analyzed. It shows that the full-solid-state magnetic refrigeration system can work at high frequency and has greater specific-cooling-power. Meanwhile the design of full-solid-state magnetic refrigeration system is more compact and simpler. The characteristics and problems of the two types of solid heat exchange media are also analyzed. Due to the strong thermal transport capability, easy access and integration of thermoelectric elements, the full-solid-state magnetic refrigeration technology based on thermoelectric thermal diodes has greater application potential. Finally, the main research directions and key scientific problems for further studying the full-solid-state magnetic refrigeration field are discussed and analyzed.
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Keywords:
- full solid state magnetic refrigeration/
- physical model/
- thermal diode/
- high thermal conductivity material element
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配置 温跨/K 最大SCP/W·kg–1 增加
百分比/%铜块 Peltier元件 平行板 5 67.6 133.8 98 10 26.1 64.9 149 拓扑优
化结构5 88.5 160.9 82 10 35.7 79.8 124 
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类型 磁工质 传热介质 工作频率/Hz 温跨/K SCP/W·kg–1 COP 参考文献 全固态MR 准2D全固态MR Gd Peltier元件 0—225 5—15 1 × 104 — [21] 全固态MR Gd Peltier元件 10 50 1.5 × 104 2.8 [27] 2D全固态MR Gd Peltier元件 20 — — 5.3—6.5 [28] 全固态MR Gd Peltier元件 20—200 60 — 4.0 [30] 1D全固态MR Gd Peltier元件 — 5 — 0.96—9.21 [23] 准2D全固态MR Gd Peltier元件 — 10 79.8 — [31] 1D全固态MR Gd kH元件 0—500 2.5 — 1.5 [32] 1D全固态MR Gd kH元件 — 11.5 — 4.0 [33] 准2D全固态MR Gd Cu块 — 5—50.9 2.6—105.8 1.5—4.2 [24] 传统AMR 1D AMR Gd 水 — 15 — 1.49—5.27 [42] 2D AMR Gd 水 — 3 — 5.4 [43] 1D AMR Gd 水 0.125 6 — 12.16 [44] AMR/旋转床 Gd 水+乙二醇 0~10 < 18.9 — — [45] 2D AMR Gd 水+乙二醇 0.75 10.2 60.59 3.1 [46] 2D AMR Gd 水 1.5 14.5 — ~2 [47] AMR/旋转床 Gd 水+乙二醇 0.8 7.1 — 0.54 [48] 1D AMR Gd 水+乙二醇 0.3—10 20 100 7.6—11.2 [49] 2D AMR ${\rm Gd_5(Si}_x{\rm Ge}_{1-x})_4 $ 水 1.25 ~10—16 — ~5 [50] AMR/平行板床 ${\rm MnFeP}_{1-x}{\rm As}_x $ 水+乙二醇 0.8 32 — — [51] 1D AMR LaFeSiMnHy 水+乙二醇 0.15 19.8 12.4 — [52] 下载:
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