不同换热时间对旋转式磁制冷性能影响  

Effect of different heat exchange time on performance of the rotary magnetic refrigeration

作　　者：王齐 赵松松 刘斌[1] 王骁扬 Wang Qi;Zhao Songsong;Liu Bin;Wang Xiaoyang(Tianjin Key Laboratory of Refrigeration Technology,Tianjin University of Commerce,Tianjin 300134,China;School of Naval Architecture,Ocean and Energy Power Engineering,Wuhan University of Technology,Wuhan 430070,China;Guangdong Nada Robot Co.,Ltd,Jiangmen 529080,China)

机构地区：[1]天津商业大学天津市制冷技术重点实验室,天津300134 [2]武汉理工大学船海与能源动力工程学院,武汉430070 [3]广东南大机器人有限公司,江门529080

出　　处：《低温与超导》2022年第3期78-83,98,共7页Cryogenics and Superconductivity

基　　金：中国博士后科学基金(2021M702541);江门市创新实践博士后研究课题(JMBSH2021A05)资助。

摘　　要：为分析不同换热时间对旋转式室温磁制冷系统制冷性能的影响,设计了一套以Gd颗粒钆(粒径:0.3-0.5 mm)为磁工质的双永磁旋转式室温磁制冷系统。通过对该系统制冷性能的试验研究,绘制出了不同工况下系统冷端温度的变化曲线,计算出其理想COP和实际COP。试验得出:在换热时间为2 s时冷端保温箱与环境温差最大为10℃,系统制冷系数最高,性能最好。In order to analyze the effect of different heat exchange time on the refrigeration performance of the rotating room temperature magnetic refrigeration system, a double permanent magnet rotating magnetic refrigeration system at room temperature with Gd particles(particle size: 0.3-0.5 mm) as the magnetic working medium was designed in this paper. Through the experimental study of the refrigeration performance of this system, the variation curve of the cold end temperature of the system under different working conditions was plotted, and the ideal COP and actual COP were calculated. The experimental results show that when the heat exchange time is 2 s, the maximum temperature difference between the cold end incubator and the environment is 10 ℃, the system has the highest cooling coefficient and the best performance.

关 键 词：双永磁 磁制冷 旋转式 活性蓄冷器 磁工质 

分 类 号：TB66[一般工业技术—制冷工程]