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Investigation on condensation heat transfer for R-404A inside a microfin tube.

Author(s) : NAN X. H., LUO X. L.

Summary

Considering R-404A as a pure and mixture refrigerant respectively, the condensation heat transfer coefficients inside 9.52 mm o.d. microfin tube were predicted by Cavallini correlations for pure and mixture refrigerant. The difference between these two values increases with vapor quality and the maximum difference is less than 4%. It shows that R-404A can be treated as pure refrigerant when calculating its in-tube condensation heat transfer coefficients. Cavallini, Yu-Koyama and Kaushink-Azer correlations were analyzed and applied to predict condensation heat transfer coefficient for R-404A. Compared with the experimental data, Cavallini correlation illustrated the highest accuracy in predicting condensation heat transfer coefficients for R-404A inside microfin tube.

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Pages: ICR07-B1-1364

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Details

  • Original title: Investigation on condensation heat transfer for R-404A inside a microfin tube.
  • Record ID : 2007-2495
  • Languages: English
  • Source: ICR 2007. Refrigeration Creates the Future. Proceedings of the 22nd IIR International Congress of Refrigeration.
  • Publication date: 2007/08/21

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