两有限热源间的不可逆磁Ericsson制冷循环的优化分析  

Optimal Analysis of an Irreversible Magnetic Ericsson Refrigeration Cycle with Finite Thermal Sources

作　　者：叶兴梅 张丽敏 方玉宏 陈景东 YE Xing-mei;ZHANG Li-min;FANG Yu-hong;CHEN Jing-dong(College of Physics and Information Engineering,Minnan Normal University,Zhangzhou 363000,China)

机构地区：[1]闽南师范大学物理与信息工程学院,福建漳州363000

出　　处：《长春师范大学学报》2022年第10期24-31,共8页Journal of Changchun Normal University

基　　金：漳州市自然科学基金项目“基于连续域束缚态的高Q值超构表面研究”(ZZ2021J11);福建省教育厅中青年教师教育科研项目“肾脏缺血再灌注的光学相干层析成像监测”(JAT190379);闽南师范大学科技项目“超表面光学性质研究”(KJ19020);福建省大学生创新创业训练计划项目“紫外光LED固化光学系统设计和热稳定性研究”。

摘　　要：建立不可逆磁Ericsson制冷循环模型,探索有限热源、热阻、非理想回热、附加回热损失、热漏及工质内不可逆性等对循环性能的影响。应用有限时间热力学方法,导出制冷率和制冷系数的数学表达式。在给定相关参数的情况下,获得了磁Ericsson制冷循环的性能特性曲线,得出重要性能参数的优化工作区间,并详细分析了各种不可逆性对制冷率和制冷系数的影响。所得结论对实际磁Ericsson制冷机的优化设计具有一定的参考价值。An irreversible cycle model of magnetic Ericsson refrigeration is established, in which the influence of finite heat capacities of external reservoirs, thermal resistance, inherent regenerative losses, additional regenerative losses, heat loss and irreversibility inside the working substances are taken into account. By using the method of finite-time thermodynamics, mathematical expressions of the cooling rate and coefficient of performance of the Ericsson refrigeration cycle are derived. The performance characteristic curses of the Ericsson refrigeration cycle are presented with given relevant parameter values. The optimal operating regions of some important parameters are determined. Moreover, the influences of multi-irreversibilities on the cooling rate and coefficient of performance are discussed in detail. The results obtained here can provide certain reference value for the optimal design of real magnetic refrigerators.

关 键 词：Ericsson循环 磁制冷 不可逆性 优化分析 

分 类 号：O414[理学—理论物理] TK123[理学—物理]