Partager

Document IIF

Analyses thermodynamiques et optimisation d'un cycle frigorifique au N2O transcritique.

Thermodynamic analyses and optimization of a transcritical N2O refrigeration cycle.

Auteurs : SARKAR J., BHATTACHARYYA S.

Type d'article : Article, Article de la RIF

Résumé

Thermodynamic analyses as well as optimization studies based on maximum cooling COP of a transcritical N2O cycle and both energetic and exergetic comparisons with CO2 cycle are presented in this article. Effects of superheating, internal heat exchanger and expansion turbine are studied as well. An expression for optimum discharge pressure has been developed. Variation trends of optimal parameters for the N2O system are similar to that of a CO2 system. The N2O cycle exhibits higher cooling COP, lower compressor pressure ratio and lower discharge pressure and temperature, and higher second law efficiency when compared to CO2 based systems; however, it is inferior in term of volumetric cooling capacity at the optimum condition. Effect of superheating in evaporator is negligible and effect of introducing an internal heat exchanger is moderate whereas effect of employing a work recovery turbine is significant on COP improvement and discharge pressure reduction at the optimal condition for both working fluids.

Documents disponibles

Format PDF

Pages : pp. 33-40

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 : Thermodynamic analyses and optimization of a transcritical N2O refrigeration cycle.
  • Identifiant de la fiche : 2009-2255
  • Langues : Anglais
  • Source : International Journal of Refrigeration - Revue Internationale du Froid - vol. 33 - n. 1
  • Date d'édition : 01/2010

Liens


Voir d'autres articles du même numéro (20)
Voir la source

Indexation