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Evaluation numérique de la performance d'éjecteurs avec un modèle de type dynamique numérique des fluides.

Numerical assessment of steam ejector efficiencies using CFD.

Auteurs : VARGA S., OLIVEIRA A. C., DIACONU B.

Type d'article : Article, Article de la RIF

Résumé

Ejector efficiencies for the primary nozzle, suction, mixing and diffuser were determined for the first time, according to their definitions, using an axi-symmetric CFD model. Water was considered as working fluid and the operating conditions were selected in a range that would be suitable for an air-conditioner powered by solar thermal energy. Ejector performance was estimated for different nozzle throat to constant section area ratios. The results indicated the existence of an optimal ratio, depending on operating conditions. Ejector efficiencies were calculated for different operating conditions. It was found that while nozzle efficiency can be considered as constant, the efficiencies related to the suction, mixing and diffuser sections of the ejector depend on operating conditions.

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Pages : pp. 1203-1211

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    20 €

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Détails

  • Titre original : Numerical assessment of steam ejector efficiencies using CFD.
  • Identifiant de la fiche : 2009-2041
  • Langues : Anglais
  • Source : International Journal of Refrigeration - Revue Internationale du Froid - vol. 32 - n. 6
  • Date d'édition : 09/2009

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