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Document IIF

Récupération d'énergie aux moyens d'un détendeur à piston radial dans un système frigorifique au CO2.

Energy recovery by means of a radial piston expander in a CO2 refrigeration system.

Auteurs : FERRARA G., FERRARI L., FIASCHI D., et al.

Type d'article : Article, Article de la RIF

Résumé

Natural refrigeration fluids as CO2 represent a very promising alternative to hydrofluorocarbons (HFCs) but they generally entail lower COP values. The possibility of recovering the large throttling losses by using an expander could give a substantial contribution to the performance improvement. In this work, a reciprocating expander developed from a hydraulic motor was experimentally analyzed. Despite of the mechanical losses due to the different original application of the machine, the thermodynamic cycles showed very promising results with the adoption of this solution. The machine isentropic efficiency was 19%, while the indicated efficiency was 66%, showing a very interesting potential of the expander. Thus, by considering a reasonable value of mechanical efficiency about 65%, the isentropic efficiency would be around 40%. Consequently, the entailed COP potential improvement, compared to a refrigeration system with simple throttling valve is currently at 7.4%, while it might overcome 20%.

Documents disponibles

Format PDF

Pages : 147-155

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 : Energy recovery by means of a radial piston expander in a CO2 refrigeration system.
  • Identifiant de la fiche : 30019873
  • Langues : Anglais
  • Source : International Journal of Refrigeration - Revue Internationale du Froid - vol. 72
  • Date d'édition : 12/2016

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