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Effets du lubrifiant sur le transfert de chaleur du dioxyde de carbone dans les cycles frigorifiques transcritiques.

Effects of lubricant on carbon dioxide heat transfer in transcritical refrigerating cycles.

Auteurs : ZILIO C., MANCIN S.

Résumé

The working fluid in refrigerating or heat pump units consists of a zeotropic mixture including the refrigerant (pure or mixture) and a blend of several molecules constituting the lubricant (oil). The analysis of the actual behaviour of the mentioned oil + refrigerant mixture inside each circuit component is rather complicated, since the presence of the lubricant strongly affects the thermophysical properties of the flowing fluid and thus plays a key role in the heat transfer process. The impact of lubricant on both gas-cooling and evaporation processes is reported in this paper, with reference to research work appeared in the open literature.

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Détails

  • Titre original : Effects of lubricant on carbon dioxide heat transfer in transcritical refrigerating cycles.
  • Identifiant de la fiche : 2010-0029
  • Langues : Anglais
  • Source : Latest technologies in refrigeration and air conditioning: energy issues and climate change, new refrigerants, new European regulations, new plants, the cold chain. XIII European Conference: June 12-13, 2009, Milan.
  • Date d'édition : 12/06/2009

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