Abstract The effect of He-H2 mixtures on the cooling power and efficiency (COP) of a 20K two-stage pulse tube refrigerator is studied in this paper. According to our preliminary findings we have concluded that a properly composed He-H2 mixture can substantially increase the cooling capacity of a pulse tube refrigerator at 20 K. He-H2 mixtures with 7%–46% H2 were investigated and found to provide 18%–68% more cooling power than with pure helium at 20 K. The above are only preliminary results. In future research, we plan to conduct experiments with He-H2 mixtures with even higher hydrogen fractions.


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    Title :

    Experimental Study on Two-stage Pulse Tube Refrigeration with Mixtures of Helium and Hydrogen


    Contributors:
    Jiang, N. (author) / Gan, Z. H. (author) / Chen, G. B. (author) / Qiu, L. M. (author) / Jiang, Y. L. (author) / He, Y. L. (author) / Li, N. (author)

    Published in:

    Publication date :

    2003-01-01


    Size :

    5 pages




    Type of media :

    Article/Chapter (Book)


    Type of material :

    Electronic Resource


    Language :

    English




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