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Analyse théorique d’un cycle frigorifique à double détente par éjecteur en auto-cascade fonctionnant avec un mélange d’hydrocarbures R290/R170.

Theoretical analysis of a double ejector-expansion autocascade refrigeration cycle using hydrocarbon mixture R290/R170.

Auteurs : LIU Y., YU J., YAN G.

Type d'article : Article, Article de la RIF

Résumé

This paper proposed a double ejector-expansion autocascade refrigeration cycle (DEARC) using hydrocarbon mixture R290/R170 for applications in low-temperature freezers. In DEARC, the two ejectors are introduced to reduce the thermodynamic loss in throttling process. The performances of the traditional autocascade refrigeration cycle (ARC), single ejector-expansion autocascade refrigeration cycle (EARC) and DEARC are compared, and several important parameters for DEARC are also discussed in detail. The results indicate that DEARC is feasible and there are obvious performances improvements on theCOP, volumetric refrigeration capacity and exergic efficiency. Especially, in DEARC, the COP increases by 97.9% and 29.6% at most compared to that of ARC and EARC, respectively, the volumetric refrigeration capacity is 334.8% and 188.6% higher than that of the two cycles. In general, the DEARC provides obvious performance improvement and produces better actual operation benefit. The potential practical advantages may be worth further attention in future studies.

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Format PDF

Pages : 33-39

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 analysis of a double ejector-expansion autocascade refrigeration cycle using hydrocarbon mixture R290/R170.
  • Identifiant de la fiche : 30024998
  • Langues : Anglais
  • Source : International Journal of Refrigeration - Revue Internationale du Froid - vol. 94
  • Date d'édition : 10/2018
  • DOI : http://dx.doi.org/10.1016/j.ijrefrig.2018.07.025

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