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Document IIF

L'oxyde nitreux en tant que frigorigène naturel : un candidat potentiel pour remplacer les frigorigènes synthétiques à basse température.

The natural fluid nitrous oxide: an option as substitute for low temperature synthetic refrigerants.

Auteurs : KRUSE H., RÜSSMANN H.

Type d'article : Article, Article de la RIF

Résumé

A theoretical investigation was performed concerning the COP of cascade refrigerating systems using N2O as refrigerant for the low temperature cascade stage and various natural refrigerants like ammonia, propane, propene, carbon dioxide and nitrous oxide itself for the high temperature stage. The basis of the comparison was a conventional R23/R134a-cascade refrigerating system for heat rejection temperatures of 55, 35 and 25°C for air cooling, cooling tower water cooling, and city water cooling, respectively. It can be stated that such an application of N2O at the primary stage and ammonia or hydrocarbons as refrigerants at the secondary stage in refrigerating systems achieves similar COP-values compared to the R23/R134a-cascade refrigerating system, whereas CO2 and N2O in a transcritical cycle in general perform worse. An application of N2O in a two-stage compression cycle with interstage injection and city water cooling at low and high interstage temperatures has a nearly equal COP as a conventional R23/R134a-cascade refrigerating system and is an interesting alternative for small laboratory refrigerating systems.

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Format PDF

Pages : 799-806

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 : The natural fluid nitrous oxide: an option as substitute for low temperature synthetic refrigerants.
  • Identifiant de la fiche : 2006-1621
  • Langues : Anglais
  • Source : International Journal of Refrigeration - Revue Internationale du Froid - vol. 29 - n. 5
  • Date d'édition : 08/2006

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