Partager

Document IIF

Analyse et optimisation de différents cycles biétagés au dioxyde de carbone transcritique pour des applications de chauffage.

Analysis and optimization of different two-stage transcritical carbon dioxide cycles for heating applications.

Auteurs : PITARCH M., NAVARRO-PERIS E., GONZÁLVEZ J., et al.

Type d'article : Article, Article de la RIF

Résumé

Increased interest in the environmental impact of refrigeration technology is leading toward design solutions aimed at improving the energy efficiency and use of eco-friendly refrigerants with low GWP. The aim of this paper is to theoretically analyse R744 air to water heat pump cycles for heating applications up to 80 °C. This work studies the following cycle configurations: two-stage with injection (with and without intermediated cooling between compressors) and a single-stage circuit coupled with an auxiliary circuit. Internal heat transfer among the different streams of refrigerant is included, and the cycles have been optimized with regards to COP in terms of the intermediate conditions and gas cooler pressure. Finally, these cycles have been compared and analysed among each other and with a subcritical injection cycle working with R134a and a single-stage R744 cycle. The improved cycle with R744 can represent a global improvement of 15% in terms of COP.

Documents disponibles

Format PDF

Pages : 235-242

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 : Analysis and optimization of different two-stage transcritical carbon dioxide cycles for heating applications.
  • Identifiant de la fiche : 30018698
  • Langues : Anglais
  • Source : International Journal of Refrigeration - Revue Internationale du Froid - vol. 70
  • Date d'édition : 10/2016

Liens


Voir d'autres articles du même numéro (25)
Voir la source

Indexation