Partager

Document IIF

Analyse de la performance du cycle frigorifique à détente par éjecteur utilisant des mélanges zéotropiques.

Performance analysis of the ejector-expansion refrigeration cycle using zeotropic mixtures.

Auteurs : ZHAO L., YANG X., DENG S., et al.

Type d'article : Article, Article de la RIF

Résumé

To evaluate the performance of the ejector-expansion refrigeration cycle (EERC) using zeotropic mixtures, a numerical study is conducted. A constant-pressure two-phase ejector model for zeotropic mixtures is established. The effects of both the fluid composition and the working conditions are investigated. Mixture R134a/R143a is selected as the working and the simulation results reveal that, the cycle COP increases first and then decreases as MFt (the mass fraction of R134a) increases in the researched condition. The COP gets a maximum value of 4.18 with MFt of 0.9 and yields a minimum value of 3.66 with MFt of 0.5. With mixture 0.9/0.1, the COP improvement reaches a maximum value of 10.47%. This improvement rises at high condensing temperature or low evaporating temperature. The exergy analysis shows that the compressor and ejector contribute the most exergy destruction, and the cycle exergy efficiency achieves a maximum value with MFt of 0.7.

Documents disponibles

Format PDF

Pages : 197-207

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 : Performance analysis of the ejector-expansion refrigeration cycle using zeotropic mixtures.
  • Identifiant de la fiche : 30015231
  • Langues : Anglais
  • Source : International Journal of Refrigeration - Revue Internationale du Froid - vol. 57
  • Date d'édition : 09/2015

Liens


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

Indexation