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AUGMENTATION OF R113 IN-TUBE EVAPORATION WITH MICRO-FIN TUBES.

Author(s) : KHANPARA J. C., PATE M. B., BERGLES A. E.

Summary

THE EFFECTS OF GEOMETRICAL PARAMETERS OF MICRO-FINNED TUBES WERE EXPERIMENTALLY INVESTIGATED FOR SINGLE-PHASE AND EVAPORATION HEAT TRANSFER. SPECIFICALLY, THE GEOMETRICAL PARAMETERS STUDIED WERE PEAK SHAPE, VALLEY SHAPE, FIN HEIGHT, NUMBER OF FINS, AND SPIRAL ANGLE. THE SYSTEM PRESSURE WAS MAINTAINED AT ABOUT 35 PSI (241 KILOPASCALS). THE AVERAGE HEAT TRANSFER COEFFICIENT WAS INCREASED BY 30 TO 100%. THE MAXIMUM IN PRESSURE DROP WAS ABOUT 80%. THE TUBES WERE RANGED ACCORDING TO THEIR HEAT TRANSFER AND PRESSURE DROP PERFORMANCE. THE TUBE WITH 70 SPIRALED FINS HAVING A ROUND PEAK AND A ROUND VALLEY RESULTED IN THE BEST HEAT TRANSFER PERFORMANCE.

Details

  • Original title: AUGMENTATION OF R113 IN-TUBE EVAPORATION WITH MICRO-FIN TUBES.
  • Record ID : 1987-2146
  • Languages: English
  • Publication date: 1986
  • Source: Source: ASHRAE Trans.
    vol. 92; n. 2B; 506-524; 14 fig.; 7 tabl.; 15 ref.
  • Document available for consultation in the library of the IIR headquarters only.

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