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Evaluation et comparaison des performances des frigorigènes HC et HFC dans un système optimisé.

Comparable performance evaluation of HC and HFC refrigerants in an optimized system.

Auteurs : DOMANSKI P. A., YASHAR D.

Résumé

The paper presents an analytical evaluation of isobutane (R-600a), propane (R-290), R-134a, R-22, R-410A, and R-32 in a vapour compression system used for comfort cooling applications. The evaluation method was based on a system simulation model that was complimented with an evolutionary computation module for the optimization of refrigerant circuitries in the evaporator and condenser. The evaluation showed the COP for the studied refrigerants to be within 13%, with R-32 and R-290 having the highest system COPs. This evaluation produced a vastly different ranking of the compared fluids than that obtained from a theoretical cycle analysis based on thermodynamic properties alone. In the system simulations, the high pressure refrigerants overcame the thermodynamic disadvantage associated with their low critical temperature and had higher COPs than the low-pressure R-134a and R-600a, which were ranked the highest by the thermodynamic cycle analysis. The presented results include entropy generation information for complete systems and individual system components.

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Pages : 2006-2

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Détails

  • Titre original : Comparable performance evaluation of HC and HFC refrigerants in an optimized system.
  • Identifiant de la fiche : 2008-0056
  • Langues : Anglais
  • Source : 7th IIR-Gustav Lorentzen Conference on Natural Working Fluids (GL2006). Proceedings
  • Date d'édition : 29/05/2006

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