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Analyse d'un éjecteur à l'aide de la mécanique des fluides numérique pour les applications de refroidissement.

CFD analysis of an ejector for cooling applications.

Numéro : pap. ID: 374

Auteurs : SCOTT D. A, AIDOUN Z.

Résumé

Vapour-jet ejectors have been used in cooling/refrigeration applications since the early 1900s. Recent efforts to reduce energy consumption by harnessing energy from low grade industrial waste heat or renewable energy sources have resulted in a renewed interest in this technology. This aper resents the results of computational fluid dynamics (CFD) simulations of a vapour-jet ejector operating with R245fa as the working fluid. The impact of varying operating conditions on ejector erformance (measured by the entrainment ratio and the critical condenser ressure) is resented. Also considered in this study is the impact of varying three geometrical arameters on ejector erformance: the mixing section length and radius, and the rimary nozzle exit radius (representative of the velocity of the motive stream). The results of this study show that CFD is a useful tool in the design and optimization of ejectors for refrigeration devices.

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Pages : 8 p.

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Détails

  • Titre original : CFD analysis of an ejector for cooling applications.
  • Identifiant de la fiche : 30002779
  • Langues : Anglais
  • Source : Proceedings of the 23rd IIR International Congress of Refrigeration: Prague, Czech Republic, August 21-26, 2011. Overarching theme: Refrigeration for Sustainable Development.
  • Date d'édition : 21/08/2011

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