中文摘要：

设计并搭建了一台小型室温磁制冷系统，进行了初步性能实验研究。系统采用双层同轴Halbaeh永磁组，磁体旋转后可在中心处获得最大1．3T磁场；在主动磁回热器两端设计了双通道流路，可有效避免系统流体死体积；驱动控制系统利用多轴伺服驱动器对磁体和水力活塞运动进行控制。样机采用了直径0．55—0．80mm钆球作为制冷工质、pH值为11的氢氧化钠溶液为换热流体．进行了初步实验研究，考察了利用系数对制冷温跨的影响等。在高低温端绝热与运行频率0．60Hz的情况下，实验获得13．3K的最大无负荷制冷温跨；在运行频率为0．4Hz时最佳利用系数为0．35，此时无负荷制冷温跨为12．1K。

英文摘要：

Magnetic refrigeration shows great characteristic for refrigeration applications due to its merits of environmental friendliness,potential high efficiency, low noise and low vibration. A compact room-tem- perature magnetic refrigerator is established with rotating Halbaehpermanent magnetgroup and duo-flow channel design, and system performance have been preliminarily tested. The motion of rotating magnet and hydraulic piston are controlled by Multi-axis servo drivers. With 0.55-0.80 mm gadolinium spheres as mag- netic material,pH value 11 NaOH solution as the heat transfer fluid and 1.3 T maximu mmagnetie field, maximum no-load temperature span is 13.3 K at 0.6 Hz operation frequency. When it operates at 0.40 Hz frequency,the optimum utilization factor is 0.35. And maximum no-load temperature span is 12.1 K.