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Experimental study on condensation heat transfer and pressure drop of low GWP refrigerant HFO-1234yf in a horizontal tube.

Etude expérimentale sur le transfert de chaleur lors de la condensation et la chute de pression du frigorigène HFO-1234yf à faible GWP à l'intérieur d'un tube horizontal.

Auteurs : WANG L., DANG C., HIHARA E.

Type d'article : Article, Article de la RIF

Résumé

Condensation heat transfer of low GWP refrigerant HFO-1234yf was measured in a horizontal tube (inner diameter: 4 mm) at a mass flux range of 100–400 kg/m2.s and different saturation temperatures (40, 45, and 50°C), and the results were compared with that of R134a and R32. Effects of mass flux, vapor quality, saturation temperature, and thermophysical properties on the heat transfer coefficient were analyzed. Mass flux and vapor quality were presented to primarily affect the heat transfer coefficient in shear-force dominated flow regimes, whereas the thermal conductivity and density ratio are the primary parameters as thermophysical properties influencing the heat transfer coefficient. Observed annular flow regimes agreed with Tandon’s flow pattern map. The measured pressure drop compared with that predicted by the Lockhart–Matinelli correlation, Huang correlation and Haraguchi correlation. And, when comparing the experimental heat transfer coefficient with four heat transfer coefficient correlations, the Haraguchi correlation fairly agreed with the experimental data, with a 10.8% mean deviation.

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Format PDF

Pages : 1418-1429

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Détails

  • Titre original : Experimental study on condensation heat transfer and pressure drop of low GWP refrigerant HFO-1234yf in a horizontal tube.
  • Identifiant de la fiche : 30004398
  • Langues : Anglais
  • Source : International Journal of Refrigeration - Revue Internationale du Froid - vol. 35 - n. 5
  • Date d'édition : 08/2012

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