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Caractéristiques du transfert de chaleur lors de la condensation et de la chute de pression des frigorigènes à base d'hydrocarbures.

Condensing heat transfer and pressure drop characteristics of hydrocarbon refrigerants.

Auteurs : LEE H. S., YOON J. I., KIM J. D., et al.

Type d'article : Article

Résumé

This paper presents the experimental results of condensing heat transfer coefficients and pressure gradients of HC refrigerants (e.g. R1270, R290 and R600a) and R22 in horizontal double pipe heat exchangers, having two different internal diameters of 12.70 mm and 9.52 mm (OD), respectively. Both the local condensing heat transfer coefficients and pressure drops (inside the tube) of hydrocarbon refrigerants were higher than R22. The average condensing heat transfer coefficient increased with the mass flux. The experimental heat transfer coefficients agreed with the correlations of Shah, Travis and Cavallini-Zecchin's to within plus or minus 20%. These results can be useful in the design of new heat exchangers involving hydrocarbon refrigerants for future air-conditioning systems. [Reprinted with permission from Elsevier. Copyright, 2005].

Détails

  • Titre original : Condensing heat transfer and pressure drop characteristics of hydrocarbon refrigerants.
  • Identifiant de la fiche : 2006-2216
  • Langues : Anglais
  • Source : International Journal of Heat and Mass Transfer - vol. 49 - n. 11-12
  • Date d'édition : 06/2006

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