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Transfert de chaleur et chute de pression lors de la condensation du frigorigène R134a dans un tube rainuré de façon axiale.

Heat transfer and pressure drop during condensation of refrigerant R134a in an axially grooved tube.

Auteurs : GRAHAM D., CHATO J. C., NEWELL T. A.

Type d'article : Article

Résumé

At 75 kg/(m2.s), the axially grooved tube performs marginally better than a smooth tube, but worse than a similarly grooved tube with an 18° helix angle. Mass fluxes at 150 kg/(m2.s) and greater show broad quality ranges in which the axially grooved tube performs significantly better than both smooth and helically grooved tubes. Pressure drop characteristics of the axially grooved tube are similar to those found in an 18° helix angle tube.

Détails

  • Titre original : Heat transfer and pressure drop during condensation of refrigerant R134a in an axially grooved tube.
  • Identifiant de la fiche : 2000-0655
  • Langues : Anglais
  • Source : International Journal of Heat and Mass Transfer - vol. 42 - n. 11
  • Date d'édition : 06/1999

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