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Predicting flow boiling heat transfer for refrigerants in microfin tubes.

Author(s) : KANDLIKAR S. G., RAYKOFF T.

Summary

Kandlikar presented a correlation scheme to correlate flow boiling data for augmented tubes and compact evaporators. This correlation was based on the original correlation by Kandlikar for smooth tubes which accurately represented various trends in heat transfer coefficient with important system parameters. In the present work, the augmented tube correlation scheme is applied to five sets of microfin tube flow boiling data available in literature. A single set of constants is found to correlate data sets for different refrigerants for a given microfin tube geometry. From the correlation, parametric trends in heat transfer coefficients for microfin tubes are studied. It has been found that the role of nucleate boiling in microfin tubes is influenced by the tube geometry. As a result of this work, a need for experimental data is identified for single-phase performance of microfin tubes over a wide range of Reynolds number.

Details

  • Original title: Predicting flow boiling heat transfer for refrigerants in microfin tubes.
  • Record ID : 1997-0742
  • Languages: English
  • Source: Proceedings of the 2nd European Thermal-Sciences (EUROTHERM) and 14th UIT National Heat Transfer Conference 1996.
  • Publication date: 1996/05/29
  • Document available for consultation in the library of the IIR headquarters only.

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