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AUGMENTATION OF IN-TUBE CONDENSATION OF R113 BY MEANS OF SURFACE ROUGHNESS.

Author(s) : LUU M., BERGLES A. E.

Summary

EXPERIMENTAL RESULTS ARE PRESENTED FOR CONDENSATION OF R113 IN TWO TUBES WITH HELICAL REPEATED-RIB INTERNAL ROUGHNESS AND FOR A THIRD SPIRALLY FLUTED TUBE. THE REPEATED-RIB TUBES INCREASED AVERAGE HEAT TRANSFER COEFFICIENTS ABOUT 80% ABOVE SMOOTH TUBE VALUES, WHILE IMPROVEMENTS IN HEAT TRANSFER COEFFICIENTS FOR THE SPIRALLY FLUTED TUBE WERE APPROXIMATELY 50%. THE PRESSURE DROP INCREASE IN BOTH TYPES OF TUBES WAS LESS THAN 50%. A CORRELATION IS DEVELOPED FOR THE REPEATED-RIB TUBE DATA.

Details

  • Original title: AUGMENTATION OF IN-TUBE CONDENSATION OF R113 BY MEANS OF SURFACE ROUGHNESS.
  • Record ID : 1984-0918
  • Languages: English
  • Publication date: 1981
  • Source: Source: ASHRAE Trans.
    vol. 87; n. 2; 33-50; 14 fig.; 1 tabl.; 34 ref.
  • Document available for consultation in the library of the IIR headquarters only.

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