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R22 et R410A : chute de pression diphasique dans un tube continu avec coudes en U.

Two-phase pressure drop of R22 and R410A in a consecutive U-type wavy tube.

Auteurs : CHEN I. Y., HU R., SHYU H. J., et al.

Résumé

The influence of return bend on the frictional performance of R410A and R22 in a 5-mm diameter wavy tube was examined in the study. For the single-phase results, the existing correlations give fairly good agreements with the data. Conversely, the existing two-phase correlations of the return bend fail to predict the data. The frictional two-phase multiplier in U bend can be fairly correlated by using the Chisholm correlation. By introducing the Martinelly parameter to the Chisholm correlation, a new correlation could be obtained to describe the data if more experimental data are available.

Détails

  • Titre original : Two-phase pressure drop of R22 and R410A in a consecutive U-type wavy tube.
  • Identifiant de la fiche : 2006-1422
  • Langues : Anglais
  • Source : Green breeze from Asia: frontiers of refrigerants, heat transfer and system.. ACRA-2002. Proceedings of the Asian conference on refrigeration and air conditioning.
  • Date d'édition : 04/12/2002

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