| 摘要: |
| 电卡效应制冷是一种新兴的绿色固态制冷技术，由于其具有成本低、COP高及可微型化等优点被认为是取代传统压缩机制冷的选择之一。现今阻碍电卡制冷器件应用的主要问题是电卡材料单片温变不足，在器件设计中采用回热式或串联式结构可将材料温变放大至工程应用量级。本文介绍了串联式电卡制冷器件中热开关装置的概念、性能指标及目前国内外相关研究成果并结合电卡效应原理分析了不同种类热开关在电卡制冷器件中的适配性。介绍了回热式和串联式电卡制冷原型器件的研究成果，基于串联式电卡制冷器件进行模拟计算分析热开关装置的性能对制冷器件性能的影响。作者认为，串联式结构理论上更适配于电卡制冷器件，利用电场驱动流体介质的热开关装置响应速度快、断开热阻大的特点可以帮助串联式电卡制冷器件突破现今技术瓶颈，从而发挥电卡制冷技术在各制冷系统领域的技术潜力。 |
| 关键词: 热开关 电卡效应 固态制冷技术 热管理技术 |
| DOI： |
| Received:May 18, 2023Revised:July 10, 2023 |
| 基金项目:国家自然科学基金(51872053, 52272105)；国家自然科学基金–广东省联合基金(U1501246)；广东省自然科学基金重大基础研究培育项目(2015A030308004)；广东省教育厅重大基础研究培育项目(2014GKXM039)；东莞市核心技术攻关前沿项目（2019622101006）；先进能源科学与技术广东省实验室佛山分中心佛山仙湖实验室开放基金重点项目(XHT2020-011) |
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| Research progresses of thermal switch device and its applications in the prototype devices of electrocaloric refrigeration |
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| Abstract: |
| Electrocaloric effect is a kind of novel solid-state refrigeration technology, which is considered one of the options to replace traditional compressor refrigeration due to its advantages such as low cost, high COP and miniaturization. The main problem that hinders the application of electrocaloric refrigeration devices nowadays is the insufficient temperature change of single chip electrocaloric effect material. In device design, using a regenerative or series structure can amplify the temperature change of materials to the level of engineering applications. This paper introduces the concept, performance indicators, and current research achievements of thermal switch devices in series electrocaloric refrigeration devices. Based on the principle of electrocaloric effect, the adaptability of different types of thermal switches in electrocaloric refrigeration devices is analyzed, and the research results of regenerative and series of electrocaloric refrigeration prototype devices are introduced. Simulation and analyses of the impact of the thermal switching devices on the performance of the refrigeration device based on the series of electrocaloric refrigeration were carried out. .The authors believe that the series structure is theoretically more suitable for electrocaloric refrigeration devices. The use of the fast response speed and high thermal resistance of the thermal switch device driven by an electric field to drive the fluid medium can help the series electrocaloric refrigeration devices break through the current technological bottleneck, and thus unleash the technical potential of electrocaloric refrigeration technology in various refrigeration system fields. |
| Key words: thermal switch electrocaloric effect solid state refrigeration technology thermal management technology |
