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Transfert de chaleur par condensation de R1234yf dans un tube lisse et à micro-ailettes de faible diamètre et développement d'une corrélation.

Condensation heat transfer of R1234yf in a small diameter smooth and microfin tube and development of correlation.

Auteurs : BASHAR M. K., NAKAMURA K., KARIYA K., MIYARA A.

Type d'article : Article de la RIF

Résumé

Condensation heat transfer of R1234yf inside smooth and microfin tube with 2.5 mm outer diameter are studied experimentally. The experiments are carried out at a saturation temperature of 20°C and 30°C, mass velocity ranging from 50 to 200 kg m−2s−1 and vapor quality ranging from 0-1. The effects of mass velocity, vapor quality, and saturation temperature on condensation heat transfer coefficient are analyzed with R1234yf and R134a. Condensation heat transfer correlation for smooth tube is developed considering present experimental data and other researchers’ data. Correlation is developed using experimental data for 2.5 mm to 10 mm outer diameter tubes and refrigerants are R134a, R1234yf, R123 and R1234ze (E) by including other researchers’ data. Newly developed correlation is successfully predicted experimental data and other sources data within mean deviation of 15 %. Experimental data are also compared with previous correlations proposed for smooth and microfin tube.

Documents disponibles

Format PDF

Pages : 331-339

Disponible

  • Prix public

    20 €

  • Prix membre*

    Gratuit

* meilleur tarif applicable selon le type d'adhésion (voir le détail des avantages des adhésions individuelles et collectives)

Détails

  • Titre original : Condensation heat transfer of R1234yf in a small diameter smooth and microfin tube and development of correlation.
  • Identifiant de la fiche : 30027875
  • Langues : Anglais
  • Sujet : Alternatives aux HFC
  • Source : International Journal of Refrigeration - Revue Internationale du Froid - vol. 120
  • Date d'édition : 12/2020
  • DOI : http://dx.doi.org/10.1016/j.ijrefrig.2020.09.002
  • Document disponible en consultation à la bibliothèque du siège de l'IIF uniquement.

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