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NUMERICAL ANALYSIS ON FLOW OF STRATOSPHERICALLY SAFE HFC134A THROUGH CAPILLARY TUBE.

Author(s) : LI R. Y., et al.

Summary

THE PAPER REPORTS ON THE NUMERICAL ANALYSIS CARRIED OUT ON THE LIQUID SINGLE AND LIQUID-VAPOUR TWO-PHASE FLOWS OF THE STRATOSPHERICALLY SAFE REFRIGERANT R134A. BY COMPARING THE CALCULATED RESULTS FROM TESTS USING R134A AND R12 AS THE WORKING FLUID, IT WAS OBSERVED THAT THE TOTAL PRESSURE DROP OF A WHOLE CAPILLARY TUBE USING R134A IS ABOUT 52% HIGHER, THE MASS FLUX ABOUT 6% LOWER AND THE TUBE LENGTH ABOUT 10% SHORTER THAN THOSE USING R12 UNDER THE SAME CALCULATION CONDITIONS, RESPECTIVELY. THEREFORE, IT IS SUGGESTED THAT SOME MODIFICATIONS SHOULD BE MADE TOTHE STANDARDS LISTED IN REFRIGERATION HANDBOOKS ON THE ASPECTS OF THE SUBSTITUTION OF R12 BY R134A.

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Details

  • Original title: NUMERICAL ANALYSIS ON FLOW OF STRATOSPHERICALLY SAFE HFC134A THROUGH CAPILLARY TUBE.
  • Record ID : 1992-2202
  • Languages: English
  • Source: New challenges in refrigeration. Proceedings of the XVIIIth International Congress of Refrigeration, August 10-17, 1991, Montreal, Quebec, Canada.
  • Publication date: 1991/08/10
  • Document available for consultation in the library of the IIR headquarters only.

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