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Analysis of binary cryogenic mixtures containing nitrogen and "Freon" in cryocoolers.

Author(s) : XU M., HE Y., CHEN Z.

Type of article: Article

Summary

Several new non-inflammable binary cryogenic mixtures of nitrogen and "Freon" are suggested in the paper. The working mechanism of using these mixtures in a Joule-Thomson cryocooler is analysed according to thermodynamic theory. The Peng-Robinson equation of state is used to calculate the mixed free enthalpy of these mixtures and a method to calculate the mutual solubility is also suggested. Finally, the vapour-liquid equilibria, liquid-liquid equilibria and vapour-liquid-liquid equilibria of these mixtures are analysed. It is shown that the suggested mixtures can be used as alternatives to mixtures of nitrogen and alkanes or alkenes.

Details

  • Original title: Analysis of binary cryogenic mixtures containing nitrogen and "Freon" in cryocoolers.
  • Record ID : 1997-0004
  • Languages: English
  • Source: Cryogenics - vol. 36 - n. 4
  • Publication date: 1996/04

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