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Étude théorique sur les performances d’un cycle frigorifique modifié au R170/R290 pour des applications de congélation.

Theoretical investigation on the performance of a modified refrigeration cycle with R170/R290 for freezers application.

Auteurs : CHEN Q., ZHOU L., YAN G., et al.

Type d'article : Article, Article de la RIF

Résumé

This study presents a modified vapor compression refrigeration cycle (MVRC) with zeotropic mixture R170/R290 for freezers. Different from the conventional vapor compression refrigeration cycle (CVRC), two separators and corresponding capillary tubes are employed into MVRC to achieve partial-condensation separation and flash separation for a composition shift effect, respectively. MVRC can provide the cycle performance improvement due to the composition shift effect of zeotropic mixture. The mathematical model based on energetic and exergetic methods is developed to evaluate the cycle operating perfor- mance of MVRC and compare with that of CVRC. The results show that MVRC is more promising for low-temperature cooling system over CVRC. Under the given operation condition, the cycle performance improvement of MVRC over CVRC in terms of coefficient of performance (COP), volumetric cooling capac- ity and exergy efficiency can reach up to 12.7%, 32.6% and 20%, respectively. The performance character- istics of the proposed cycle demonstrate its potential advantages for application in the freezers.

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Format PDF

Pages : 282-290

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 : Theoretical investigation on the performance of a modified refrigeration cycle with R170/R290 for freezers application.
  • Identifiant de la fiche : 30026587
  • Langues : Anglais
  • Source : International Journal of Refrigeration - Revue Internationale du Froid - vol. 104
  • Date d'édition : 08/2019
  • DOI : http://dx.doi.org/10.1016/j.ijrefrig.2019.05.037

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