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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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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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Indexing
- Themes: Mass transfer
- Keywords: R134a; Pool boiling; Heat transfer coefficient; Turbulator; Tube; Heat transfer; R22
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- Languages : English
- Source: New challenges in refrigeration. Proceedings of the XVIIIth International Congress of Refrigeration, August 10-17, 1991, Montreal, Quebec, Canada.
- Formats : PDF
View record