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A STUDY OF FLOW BOILING HEAT TRANSFER WITH REFRIGERANT MIXTURES.

Author(s) : JUNG D. S.

Type of article: Article

Summary

MORE THAN 2,000 LOCAL HEAT TRANSFER COEFFICIENTS ARE OBTAINED WITH THE AZEOTROPIC R12-R152A MIXTURE AND COMPARED AGAINST THE PREVIOUSLY MEASURED DATA WITH THE NON-AZEOTROPIC R22-R114 MIXTURE. THE VARIATION OF PHYSICAL PROPERTIES DUE TO MIXING IS RESPONSIBLE FOR ALMOST ALL OF THE HEAT TRANSFER DEGRADATION. IN A PARTIAL BOILING REGION, SEVERE DEGRADATION OF HEAT TRANSFER WITH MIXTURES IS FOUND. A SUPPRESSION OF NUCLEATE BOILING AT LOWER QUALITIES DUE TO LOSS OF WALL SUPERHEAT WITH MIXTURES IS RESPONSIBLE FOR THIS DEGRADATION. THE PREDICTION AGREED WELL WITH OBSERVED TRANSITION QUALITIES FOR BOTH PURE AND MIXED REFRIGERANTS.

Details

  • Original title: A STUDY OF FLOW BOILING HEAT TRANSFER WITH REFRIGERANT MIXTURES.
  • Record ID : 1990-0545
  • Languages: English
  • Source: International Journal of Heat and Mass Transfer - vol. 32 - n. 9
  • Publication date: 1989

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