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Système frigorifique à détente par éjecteur : conception d'éjecteur et évaluation de performance.

Ejector expansion refrigeration system: ejector design and performance evaluation.

Auteurs : HASSANAIN M., ELGENDY E., FATOUH M.

Type d'article : Article, Article de la RIF

Résumé

Use of a two-phase flow ejector as an expansion device in vapor compression refrigeration systems is one of the efficient ways to enhance its performance. The present work aims to design a constant-area two phase flow ejector and to evaluate performance characteristics of the ejector expansion refrigeration system working with R134a. In order to achieve these objectives, a simulation program is developed and effects of operating conditions and ejector internal efficiencies on the system performance are investigated using EES software. Comparison between present results and published experimental data revealed that the developed model can predict the system COP with a maximum error of 2.3%. The system COP increased by 87.5% as evaporation temperature changed from -10 °C to 10 °C. Finally, correlations to size ejector main diameters as a function of operating conditions, system cooling capacity and ejector internal efficiencies are reported.

Documents disponibles

Format PDF

Pages : 1-13

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 expansion refrigeration system: ejector design and performance evaluation.
  • Identifiant de la fiche : 30015388
  • Langues : Anglais
  • Source : International Journal of Refrigeration - Revue Internationale du Froid - vol. 58
  • Date d'édition : 10/2015

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