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Compound enhancement of boiling heat transfer of R134a in a tube bundle.

Author(s) : CHEUNG K. H., OHADI M. M., DESSIATOUN S.

Summary

Heat transfer enhancement of R134a in a tube bundle for a pool boiling regime was studied experimentally utilizing the electrohydrodynamics (EHD) technique. A laboratory-scale tube bundle utilizing commercially available 40-fins-per inch (40 fpi) enhanced tubes was used in the experiments. R134a was chosen as the working fluid in all of the experiments. A nearly threefold enhancement in the boiling heat transfer coefficient of the bundle was obtained with maximum EHD power consumption of 1.2% of the bundle heat transfer rate. The effect of electric field polarity was studied and was found to have no pronounced effect on the enhancement mechanism for the application at hand.

Details

  • Original title: Compound enhancement of boiling heat transfer of R134a in a tube bundle.
  • Record ID : 1996-1518
  • Languages: English
  • Source: ASHRAE Transactions.
  • Publication date: 1995/01
  • Document available for consultation in the library of the IIR headquarters only.

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