Document IIF

Condensation de frigorigènes à faible potentiel de réchauffement planétaire à l’intérieur d’un tube axial en aluminium à micro-ailettes.

In tube condensation of low global warming potential refrigerants in an axial micro-fin aluminum tube.

Auteurs : HU Y., JAJJA S. A., YANG C.-M., YANA MOTTA S., FRICKE B. A., NAWAZ K.

Type d'article : Article de la RIF

Résumé

Environmental regulations have driven the development of refrigerants with low global warming potential (GWP). To design heat exchangers using these new refrigerants, data are needed concerning the heat transfer coefficient and pressure drop in two-phase flow. Another change is the increasing use of aluminum tubes rather than copper tubes to reduce heat exchanger cost. Hence, this study presents an experimental investigation of flow condensation using an expanded axial micro-fin aluminum tube with a fin-tip diameter of 5.96 mm. The experiments included single compounds R-32, R-1234yf, and R-1234ze(E), zeotropic mixtures with low glide (R-454B), and zeotropic mixtures with high-glide (R-454C and R-455A). Experiments were conducted at condensation temperatures ranging from 40 °C to 50 °C, reduced pressures ranging from 0.21 to 0.55, and mass fluxes ranging from 150 to 350 kg/(m2 s). Data obtained for these refrigerants constitute one of the first reports for high-glide refrigerants using axial micro-fin aluminum tubes. An evaluation of heat transfer degradation of zeotropic mixtures due to mass transfer resistance at the liquid/vapor interface is presented. This information can be used to design heat exchangers for next generation air conditioning and refrigeration systems.

Documents disponibles

Format PDF

Pages : 221-241

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 : In tube condensation of low global warming potential refrigerants in an axial micro-fin aluminum tube.
  • Identifiant de la fiche : 30032323
  • Langues : Anglais
  • Sujet : Alternatives aux HFC
  • Source : International Journal of Refrigeration - Revue Internationale du Froid - vol. 161
  • Date d'édition : 05/2024
  • DOI : http://dx.doi.org/10.1016/j.ijrefrig.2024.03.001

Liens


Voir d'autres articles du même numéro (20)
Voir la source