Numerical evaluation of a kilowatt-level rotary electrocaloric refrigeration system
Numerical evaluation of a kilowatt-level rotary electrocaloric refrigeration system
复制标题
千瓦级旋转电热制冷系统的数值评估
DOI：
10.1016/j.ijrefrig.2020.09.011
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发表时间：
2021
影响因子：
3.9
通讯作者：
Xiaoshi Qian
中科院分区：
文献类型：
--
作者：
Junye Shi;Qiang Li;Tianyuan Gao;Donglin Han;Yuanyuan Li;Jiangping Chen;Xiaoshi Qian
近年来，电热制冷技术得到了迅速的发展，并得到了学术界和工业界的广泛关注。目前，多年来只有少数研究报道了EC冷却装置，其中大多数都集中在小规模的冷却应用。然而，对于实际应用，EC装置必须实现千瓦级的冷却功率。在这项工作中，我们开发了一个旋转EC装置，其中的工作体是在平面内旋转，和传热流体流过的工作体在面外的方向。该设计允许连续的流体-固体共轭传热，并表现出千瓦级的冷却功率。通过数值模拟研究了该装置工作状态的关键参数与装置性能之间的内在联系。对于一个给定的EC工作体，电诱导的热生成/吸收被发现显着影响的冷却功率。同时，对系统的温度跨度和循环周期进行了参数研究。通过微调操作参数，系统实现了优化的总体性能，即，当在10 K的温度跨度和10 s的循环周期上操作时，冷却功率为1729.90 W。该工作提供了一个通用的拓扑设计的旋转装置，采用流固耦合传热，并指导优化的操作参数，以实现巨大的冷却功率。
Electrocaloric (EC) cooling technology has rejuvenated rapidly in recent years and gained the great attention in both academia and industrial. Currently, there are only handful studies of EC cooling devices reported over the years, and most of them are focusing on small-scale cooling applications. For practical application, however, it is essential for an EC device to achieve a kilowatt level of cooling power. In this work, we develop a rotary EC device, in which the working bodies are rotating in-plane, and the heat transfer fluid flow through the working bodies in out-of-plane direction. The design allows the continuous fluid–solid conjugated heat transfer and exhibits kilowatt level of cooling power. Numerical study has been performed to explore the internal correlation between the key parameters of the working condition and performance of the device. For a given EC working body, the electric-induced heat generation/absorption is found to significantly affect the cooling power. Meanwhile, parametric studies on the temperature span and cyclic period of the system are conducted. By fine-tuning the operation parameters, the system achieves an optimized overall performance,i.e., a cooling power of 1729.90 W, when operated over a temperature span of 10 K and cyclic period of 10 s. This work provides a general topological design of a rotary device that employs fluid–solid conjugated heat transfer, and guides the optimization of operation parameters to achieve giant cooling power.
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影响因子：
4.6
作者：
Chen, Xiang-Zhong;Li, Xinyu;Zhang, Q. M.
通讯作者：
Zhang, Q. M.
DOI：
10.1016/j.ijrefrig.2017.06.026
发表时间：
2017-10
期刊：
International Journal of Refrigeration-revue Internationale Du Froid
影响因子：
--
作者：
A. Mota-Babiloni;Pavel Makhnatch;Rahmatollah Khodabandeh
通讯作者：
A. Mota-Babiloni;Pavel Makhnatch;Rahmatollah Khodabandeh
影响因子：
4
作者：
Hareesh Godaba;C. C. Foo-C.;Zhi-qian Zhang;B. Khoo;Jian Zhu
通讯作者：
Hareesh Godaba;C. C. Foo-C.;Zhi-qian Zhang;B. Khoo;Jian Zhu
DOI：
10.1080/23744731.2016.1171630
发表时间：
2016-01-01
影响因子：
1.9
作者：
Qian, Suxin;Geng, Yunlong;Takeuchi, Ichiro
通讯作者：
Takeuchi, Ichiro
DOI：
10.1016/j.ijrefrig.2015.06.008
发表时间：
2015-09-01
期刊：
INTERNATIONAL JOURNAL OF REFRIGERATION-REVUE INTERNATIONALE DU FROID
影响因子：
--
作者：
Kitanovski, Andrej;Plaznik, Uros;Poredos, Alojz
通讯作者：
Poredos, Alojz