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Étude expérimentale sur la fraction de vide lors de l’écoulement diphasique de R1234yf dans des tubes lisses horizontaux.

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

Auteurs : GARCIA PABON J. J., PEREIRA L. C., HUMIA G., et al.

Type d'article : Article, Article de la RIF

Résumé

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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Format PDF

Pages : 103-112

Disponible

  • Prix public

    20 €

  • Prix membre*

    Gratuit

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Détails

  • Titre original : Experimental study on the void fraction during two-phase flow of R1234yf in smooth horizontal tubes.
  • Identifiant de la fiche : 30026568
  • Langues : Anglais
  • Source : International Journal of Refrigeration - Revue Internationale du Froid - vol. 104
  • Date d'édition : 08/2019
  • DOI : http://dx.doi.org/10.1016/j.ijrefrig.2019.05.007

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