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Experimental study on the void fraction during two-phase flow of R1234yf in smooth horizontal tubes.

Author(s) : GARCIA PABON J. J., PEREIRA L. C., HUMIA G., et al.

Type of article: Article, IJR article

Summary

Void fraction is an important parameter to design and simulate thermal systems involving two-phase flows. In this research, an experimental investigation of the void fraction in adiabatic two-phase flow of R1234yf in horizontal and smooth tubes with an internal diameter of 4.8 mm was carried out. For the experimental tests, the vapor quality ranges from 0.1 to 1 while two saturation temperatures (15 and 25 °C) and two mass flow rates (180 and 280 kg. m - 2 s -1 ) are investigated. The quick-closing valve(s)
method is used to measure the volumetric void fraction. Tests are also undertaken with R134a used as a reference in this study. The results highlight that the void fraction of R1234yf is 5% lower than that for R134a. In addition, the experimental data of R1234yf were compared against seven correlations from the literature: the Baroczy and the Hughmark correlations were shown to provide the best prediction, with a mean absolute error of 2% and 3.2%, respectively.

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Pages: 103-112

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Details

  • Original title: Experimental study on the void fraction during two-phase flow of R1234yf in smooth horizontal tubes.
  • Record ID : 30026568
  • Languages: English
  • Source: International Journal of Refrigeration - Revue Internationale du Froid - vol. 104
  • Publication date: 2019/08
  • DOI: http://dx.doi.org/10.1016/j.ijrefrig.2019.05.007

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