【作者】 陈国邦； 汤珂； 黄永华； 邱利民； 甘智华；

【Author】 Chen Guobang Tang Ke Huang Yonghua Qiu Limin Gan Zhihua (Cryogenics Laboratory, Zhejiang University, 310027)

【机构】 浙江大学制冷与低温研究所；

【摘要】 在采用He-H2混合工质脉管制冷实验中发现回热材料Er3Ni具有吸收(附) H2的性质,初步估算表明吸氢后形成的氢化物Er3NiHx具有比Er3Ni更大的体积比热容, 回热性能更加优越。实验结果表明,由于He-H2混合工质和Er3NiHx填料的共同作用, 显著提高了30K温区脉管制冷机的性能。更多还原

【Abstract】 In the experiment of pulse tube refrigeration with He-H2 mixtures, it is found that Er3Ni, the regenerative material, is able to absorb H2 and produce Er3NiHx. The computation indicates that the regenerative performance of Er3NiHx is better than that of Er3Ni due to its higher volume specific heat. Experimental results show that the performance of pulse tube refrigeration in 30K temperature region is enhanced greatly with He-H2 mixtures and Er3NiHx packing.更多还原