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A general heat transfer correlation for flow condensation in single port mini and macro channels using genetic programming.

Author(s) : HOSSEINI S. H., MORADKHANI M. A., VALIZADEH M., ZENDEHBOUDI A., OLAZAR M.

Type of article: IJR article

Summary

A new general explicit correlation is proposed to predict the heat transfer coefficient of fluids condensing in conventional and mini channels. The expression has been developed by correlating the Numix number with Remix, Prmix, phase density ratio, Pres, WeGT, and FrL using genetic programming for the two-phase flow. The model has been validated with a big dataset consisting of 6521 data samples, covering a wide range of fluids used in refrigeration and heat pump industries, cross-sectional geometries (different diameters), mass fluxes, and saturation temperatures. The new generalized correlation fits the wide range of data points used with an average relative error of 17.82 %. The same database has been used to compare predictions of eight correlations available in the literature, but they failed to give a reasonable estimation of the present experimental results.

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Pages: 376-389

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Details

  • Original title: A general heat transfer correlation for flow condensation in single port mini and macro channels using genetic programming.
  • Record ID : 30027813
  • Languages: English
  • Source: International Journal of Refrigeration - Revue Internationale du Froid - vol. 119
  • Publication date: 2020/11
  • DOI: http://dx.doi.org/10.1016/j.ijrefrig.2020.06.021
  • Document available for consultation in the library of the IIR headquarters only.

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