Ecological optimization for an irreversible magnetic Ericsson refrigeration cycle

doi:10.1088/1674-1056/22/8/087501

中国物理B ›› 2013, Vol. 22 ›› Issue (8): 87501-087501.doi: 10.1088/1674-1056/22/8/087501

• CONDENSED MATTER: ELECTRONIC STRUCTURE, ELECTRICAL, MAGNETIC, AND OPTICAL PROPERTIES • 上一篇下一篇

Ecological optimization for an irreversible magnetic Ericsson refrigeration cycle

汪浩, 吴国兴

Tianhua College, Shanghai Normal University, Shanghai 201815, China

收稿日期:2012-11-16 修回日期:2013-01-23 出版日期:2013-06-27 发布日期:2013-06-27
基金资助:
Project supported by the Program for Excellent Young Teachers Foundation of Shanghai in China (Grant No. thc-20100036).

Ecological optimization for an irreversible magnetic Ericsson refrigeration cycle

Wang Hao (汪浩), Wu Guo-Xing (吴国兴)

Tianhua College, Shanghai Normal University, Shanghai 201815, China

Received:2012-11-16 Revised:2013-01-23 Online:2013-06-27 Published:2013-06-27
Contact: Wang Hao E-mail:shnuwh@163.com
Supported by:
Project supported by the Program for Excellent Young Teachers Foundation of Shanghai in China (Grant No. thc-20100036).

摘要/Abstract

摘要： An irreversible Ericsson refrigeration cycle model is established, in which multi-irreversibilities such as finite-rate heat transfer, regenerative loss, heat leakage, and the efficiency of the regenerator are taken into account. Expressions for several important performance parameters, such as the cooling rate, coefficient of performance (COP), power input, exergy output rate, entropy generation rate, and ecological function are derived. The influences of the heat leakage and the time of the regenerative processes on the ecological performance of the refrigerator are analyzed. The optimal regions of the ecological function, cooling rate, and COP are determined and evaluated. Furthermore, some important parameter relations of the refrigerator are revealed and discussed in detail. The results obtained here have general significance and will be helpful in gaining a deep understanding of the magnetic Ericsson refrigeration cycle.

关键词: paramagnetic salt, Ericsson refrigerator, irreversibility, ecological function, parameter relations

Abstract: An irreversible Ericsson refrigeration cycle model is established, in which multi-irreversibilities such as finite-rate heat transfer, regenerative loss, heat leakage, and the efficiency of the regenerator are taken into account. Expressions for several important performance parameters, such as the cooling rate, coefficient of performance (COP), power input, exergy output rate, entropy generation rate, and ecological function are derived. The influences of the heat leakage and the time of the regenerative processes on the ecological performance of the refrigerator are analyzed. The optimal regions of the ecological function, cooling rate, and COP are determined and evaluated. Furthermore, some important parameter relations of the refrigerator are revealed and discussed in detail. The results obtained here have general significance and will be helpful in gaining a deep understanding of the magnetic Ericsson refrigeration cycle.

Key words: paramagnetic salt, Ericsson refrigerator, irreversibility, ecological function, parameter relations

中图分类号: (Magnetocaloric effect, magnetic cooling)

75.30.Sg

07.20.Mc (Cryogenics; refrigerators, low-temperature detectors, and other low-temperature equipment)

汪浩, 吴国兴. Ecological optimization for an irreversible magnetic Ericsson refrigeration cycle[J]. 中国物理B, 2013, 22(8): 87501-087501.

Wang Hao (汪浩), Wu Guo-Xing (吴国兴). Ecological optimization for an irreversible magnetic Ericsson refrigeration cycle[J]. Chin. Phys. B, 2013, 22(8): 87501-087501.

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Ecological optimization for an irreversible magnetic Ericsson refrigeration cycle

Ecological optimization for an irreversible magnetic Ericsson refrigeration cycle

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