Partager

Document IIF

Experimental analysis of the performance of a semi-hermetic reciprocating compressor working with R744/R290 mixtures.

Auteurs : D'IGNAZI C., MOLINAROLI L.

Type d'article : Article de la RIF

Résumé

In this study, a semi-hermetic compressor designed for R744 is tested using R744/R290 mixtures with mass composition of 100/0% (pure R744, baseline), 95/5%, 90/10%, 85/15%, and 80/20%. Tests are conducted under steady-state conditions for various operating points, including different saturation suction temperatures
and gas cooler pressures, with a fixed superheat of 10 K and constant compressor frequency. The results show that the refrigerant mass flow rate decreases with increasing propane content. Power consumption exhibits a complex and non-linear behavior: at low propane concentrations no clear trend is observed, whereas at higher propane contents a reduction in power consumption is measured. The discharge temperature is higher for the R744/R290 mixtures compared to pure R744. Regarding performance, volumetric and global efficiencies show no significant differences up to 15% propane, while a noticeable increase is observed at 20% propane, indicating an overall improvement in compressor performance at higher propane concentrations.

Documents disponibles

Format PDF

Pages : 8 p.

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 : Experimental analysis of the performance of a semi-hermetic reciprocating compressor working with R744/R290 mixtures.
  • Identifiant de la fiche : 30034898
  • Langues : Anglais
  • Sujet : Technologie
  • Source : International Journal of Refrigeration - Revue Internationale du Froid - vol. 186
  • Date d'édition : 06/2026
  • DOI : http://dx.doi.org/https://doi.org/10.1016/j.ijrefrig.2026.106890

Liens


Voir d'autres articles du même numéro (27)
Voir la source

Indexation