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HEAT TRANSFER AUGMENTATION IN POOL BOILING BY AID OF PERFORATED METAL FOILS.

Author(s) : PALM B. E.

Summary

IN THIS EXPERIMENTAL STUDY, IT IS SHOWN THAT THE HEAT TRANSFER COEFFICIENT IN POOL BOILING ON A SINGLE SMOOTH TUBE CAN BE INCREASED CONSIDERABLY BY WRAPPING A PERFORATED METAL FOIL TIGHTLY AROUND THE SMOOTH TUBE. SEVEN FOILS WITH DIFFERENT PERFORATIONS WERE TESTED AND THE FOLLOWING PARAMETERS WERE CHANGED: HOLE DENSITY, HOLE DIAMETER, DISTANCE BETWEEN FOIL AND SURFACE, EVAPORATION TEMPERATURE AND OIL CONCENTRATION. R22 AND R134A WERE USED AS REFRIGERANTS. IN EACH TEST THE HEAT FLUX WAS CHANGED FROM 0 TO 50 KILOWATTS/M2 AND THE COEFFICIENT OF HEAT TRANSFER WAS MEASURED BOTH FOR INCREASING AND DECREASING HEAT FLUX.

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Pages: 489-493

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Details

  • Original title: HEAT TRANSFER AUGMENTATION IN POOL BOILING BY AID OF PERFORATED METAL FOILS.
  • Record ID : 1992-2132
  • 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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