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Document IIF

Evaluation de la performance des frigorigènes de remplacement quasi-azéotropiques R-502.

Performance evaluation of near-azeotropic R-502 alternative refrigerants.

Auteurs : SHIN J. S., KIM M. H.

Résumé

As a long-term alternative for R-502, environmentally friendly refrigerant mixtures were proposed and performance evaluations of refrigeration system with alternatives were conducted. Two newly proposed refrigerants are near-azeotropic binary mixtures, R-152a/R-1270 (35/65 by wt.%) and R-290/DME (35/65 by wt.%). These two alternatives have zero ODP (Ozone Depletion Potential) and much less GWP (Global Warming Potential) than R-502 and R-404A. They have excellent thermodynamic and transport properties. In this study, thermodynamic refrigeration cycle analysis was performed, and cycle characteristics such as cooling capacity, coefficient of performance, suction and discharge pressures and temperatures are compared to those for the baseline R-502 and the R-404A systems. In addition, performance evaluation tests were conducted with evaporation temperature of 5°C, condensation temperature of 45°C, subcooling temperature of 5°C, superheating temperature of 5°C. Comparisons between R-404A and R-290/DME (35/65 by wt.%) were carried out on the same cooling capacity. The system performance of newly proposed refrigerant mixture showed promising results.

Documents disponibles

Format PDF

Pages : 2006-2

Disponible

  • Prix public

    20 €

  • Prix membre*

    Gratuit

* meilleur tarif applicable selon le type d'adhésion (voir le détail des avantages des adhésions individuelles et collectives)

Détails

  • Titre original : Performance evaluation of near-azeotropic R-502 alternative refrigerants.
  • Identifiant de la fiche : 2008-0069
  • Langues : Anglais
  • Source : 7th IIR-Gustav Lorentzen Conference on Natural Working Fluids (GL2006). Proceedings
  • Date d'édition : 29/05/2006

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