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Performances des mélanges R32/R125/R134a utilisés dans les systèmes munis de bouteilles tampons ou d'évaporateurs noyés.

Performance of R32/R125/R134a mixtures in systems with accumulators or flooded evaporators.

Auteurs : BIVENS D. B., PATRON D. M., YOKOZEKI A.

Résumé

R32/R125/R134a mixtures are zeotropic, having vapour compositions that are different from the liquid compositions. These differences can lead to changes in refrigerant circulating compositions, depending on system design features such as suction line accumulators and refrigerant on the shell side of flooded evaporators. Values for inside-tube and outside-tube heat transfer coefficients are also affected by the different vapour/liquid compositions. These factors lead to the opportunity for increased heating capacity of heat pumps with accumulators but to reduced capacity and energy efficiency in water chillers having flooded evaporators.

Détails

  • Titre original : Performance of R32/R125/R134a mixtures in systems with accumulators or flooded evaporators.
  • Identifiant de la fiche : 1998-1532
  • Langues : Anglais
  • Source : ASHRAE Transactions.
  • Date d'édition : 1997
  • Document disponible en consultation à la bibliothèque du siège de l'IIF uniquement.

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