| He-H_2 mixture and Er_3NiH_χ packing for the refrigeration enhancement of pulse tube refrigerator |
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| 引用本文： | CHEN Guobang,TANG Ke,HUANG Yonghua,GAN Zhihua & BAO RuiCryogenics Laboratory,Zhejiang University,Hang/hou 310027,China. He-H_2 mixture and Er_3NiH_χ packing for the refrigeration enhancement of pulse tube refrigerator[J]. 科学通报(英文版), 2004, 0(5) |
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| 作者姓名： | CHEN Guobang TANG Ke HUANG Yonghua GAN Zhihua & BAO RuiCryogenics Laboratory Zhejiang University Hang/hou 310027 China |
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| 作者单位： | CHEN Guobang，TANG Ke，HUANG Yonghua，GAN Zhihua & BAO RuiCryogenics Laboratory，Zhejiang University，Hang/hou 310027，China |
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| 摘 要： | The computation with the theory of modified Brayton Cycle indicates that higher cooling power and coefficient of performance for a pulse tube refrigerator can be achieved with He-H_2 mixture as working gas than those with pure He in the temperature region of 30 K. In addition, it is found that Er_3Ni, a regenerative material, is able to absorb H_2 and produces Er_3NiH_x. The computation presents that the regenerative performance of Er_3NiH_x is better than that of Er_3Ni due to its higher volume specific heat. Experimental results show that the pulse tube refrigeration performance in 30 K temperature region is enhanced greatly with He-H_2 mixture and Er_3NiH_x packing.
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He-H_2 mixture and packing for the refrigeration enhancement of pulse tube refrigerator |
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| CHEN Guobang,TANG Ke,HUANG Yonghua,GAN Zhihua , BAO RuiCryogenics Laboratory,Zhejiang University,Hang/hou ,China. He-H_2 mixture and packing for the refrigeration enhancement of pulse tube refrigerator[J]. Chinese science bulletin, 2004, 0(5) |
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| Authors: | CHEN Guobang TANG Ke HUANG Yonghua GAN Zhihua & BAO RuiCryogenics Laboratory Zhejiang University Hang/hou China |
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| Affiliation: | CHEN Guobang,TANG Ke,HUANG Yonghua,GAN Zhihua & BAO RuiCryogenics Laboratory,Zhejiang University,Hang/hou 310027,China |
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| Abstract: | The computation with the theory of modified Brayton Cycle indicates that higher cooling power and coefficient of performance for a pulse tube refrigerator can be achieved with He-H2 mixture as working gas than those with pure He in the temperature region of 30 K. In addition, it is found that Er3Ni, a regenerative material, is able to absorb H2 and produces Er3NiHx. The computation presents that the regenerative performance of Er3NiHx is better than that of Er3Ni due to its higher volume specific heat. Experimental results show that the pulse tube refrigeration performance in 30 K temperature region is enhanced greatly with He-H2 mixture and Er3NiHx packing. |
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| Keywords: | pulse tube refrigerator mixture metallic hydride. |
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