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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© 2003 Kluwer Academic Publishers
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Jiang, N. et al. (2003). Experimental Study on Two-stage Pulse Tube Refrigeration with Mixtures of Helium and Hydrogen. In: Ross, R.G. (eds) Cryocoolers 12. Springer, Boston, MA. https://doi.org/10.1007/0-306-47919-2_43
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DOI: https://doi.org/10.1007/0-306-47919-2_43
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