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Document IIF

Performance du R-290 et du R-1270 pour les applications au R-22 avec des variations de la température au niveau de l'évaporateur et du condenseur.

Performance of R-290 and R-1270 for R-22 applications with evaporator and condenser temperature variation.

Auteurs : SHIM Y. B., BAEK I. C., PARK K. J., et al.

Résumé

In this study, thermal performance of 2 hydrocarbon refrigerants of R-290 and R-1270 is measured in an attempt to substitute R-22. They are tested in a heat pump bench tester of 1 ton capacity with a hermetic rotary compressor. Water and water/glycol mixture are employed as the secondary heat transfer fluids in the test bench. All tests are conducted under the same external conditions simulating 3 different air-conditioning and heat pumping conditions. Test results show that the coefficient of performance of these hydrocarbon refrigerants is up to 11.5% higher than that of R-22 under all conditions. Refrigeration capacity of R-290 is up to 8.2% lower than that of R-22 under normal air-conditioning and heat pumping conditions. Under extremely cold temperature condition, however, the capacity of R-290 is 5% higher than that of R-22. On the other hand, the capacity of R-1270 is similar to that of R-22 under all conditions. Compressor discharge temperatures of these hydrocarbons are reduced by 14-31°C as compared with R-22. The amount of charge is reduced up to 58% as compared with R-22. Overall, these hydrocarbons provide good performance with reasonable energy savings without any environmental problem and thus can be used as long term alternatives for residential air-conditioning and heat pumping applications.

Documents disponibles

Format PDF

Pages : ICR07-E1-492

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 of R-290 and R-1270 for R-22 applications with evaporator and condenser temperature variation.
  • Identifiant de la fiche : 2008-0515
  • Langues : Anglais
  • Source : ICR 2007. Refrigeration Creates the Future. Proceedings of the 22nd IIR International Congress of Refrigeration.
  • Date d'édition : 21/08/2007

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