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Document IIF

Conception de l'éjecteur et étude théorique d'un cycle frigorifique au R134a à éjecteur.

Ejector design and theoretical study of R134a ejector refrigeration cycle.

Auteurs : KHALIL A., FATOUH M., ELGENDY E.

Type d'article : Article, Article de la RIF

Résumé

In this paper, a mathematical model is developed to design R134a ejector and to predict the performance characteristics of a vapor jet refrigeration system over a wide range of the investigated parameters. These parameters include boiling temperature (65-85°C), condensing temperature (25-40°C), evaporating temperature (0-10°C), degrees of superheat (0-15°C), nozzle efficiency (0.75-0.95) and diffuser efficiency (0.75-0.95). Simulated results showed that the present model data are in good agreement with experimental data in the literature with an average error of 6%. It is found that the ejector area ratio at boiling temperature of 85°C is about double that at boiling temperature of 65°C for various evaporating and condensing temperatures. The present results confirm that waste heat sources of temperature ranging from 65 to 85 °C are adequate to operate vapor jet refrigeration system for air-conditioning applications.

Documents disponibles

Format PDF

Pages : 1684-1698

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 : Ejector design and theoretical study of R134a ejector refrigeration cycle.
  • Identifiant de la fiche : 30001681
  • Langues : Anglais
  • Source : International Journal of Refrigeration - Revue Internationale du Froid - vol. 34 - n. 7
  • Date d'édition : 11/2011

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