室温磁制冷机的实验性能研究  

Experimental study on a room temperature magnetic refrigerator

作　　者：姚冠辉[1] 公茂琼[1] 吴剑峰[1] 

机构地区：[1]中国科学院理化技术研究所

出　　处：《低温工程》2006年第3期12-15,32,共5页Cryogenics

基　　金：国家863项目(2002AA324010);中国科学院重要方向性项目(KJCX2-SW-W12-2)资助

摘　　要：介绍了利用1.5 T永磁体提供磁场、选取氦气作为换热流体、采用主动式磁回热器的室温磁制冷机的实验性能研究情况。应用现有实验装置,通过调节气体压力与循环频率,最大达到了30.93 K的高低温端温差,在高低温端温差为10.97 K达到了25.20 W制冷量。研究结果表明室温磁制冷机的制冷能力显著,并且为室温磁制冷机的设计以及进一步的发展提供了有益的参考。An investigation of an active magnetic refrigerator has been carried out for the room temperature refrigeration with an average 1.5 T magnetic field supplied by permanent magnets. Helium gas was used as a heat transfer fluid. Using this prototype, a preliminary maximal temperature span of 30.93 K was achieved by adjusting the pressure of gas and the operating frequency, The refrigerator can produce a cooling power of 25.20 W at a 10.97 K temperature span. The results show that the refrigerating capacity of the active magnetic refrigerator is remarkable, and the useful data for the future room temperature magnetic refrigerator design and development are provided.

关 键 词：室温磁制冷机 磁性材料 永磁体 

分 类 号：TB651[一般工业技术—制冷工程]