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Analyse d'un éjecteur utilisant des frigorigènes écologiques.

Analysis of an ejector using environmentally friendly refrigerants.

Auteurs : SELVARAJU A., MANI A.

Type d'article : Article

Résumé

When an ejector is operated in choking mode, it gives a better performance with a higher entrainment ratio. To obtain this better performance under different operating conditions, the area ratio of the ejector is varied. A computer code based on existing one-dimensional ejector theory was written to analyse performance of the ejector. The code includes the effects of friction in the constant-area mixing chamber and changes in the specific heat of the working fluid besides internal irreversibility of the ejector. The simulated performance was compared with the available experimental data from the literature for validation. The effects of operating parameters on the critical ejector area ratio and the critical entrainment ratio were studied. Comparison of the performance of the ejector with the environmentally friendly refrigerants R134a, R152a, R290, R600a and R717 was made.

Détails

  • Titre original : Analysis of an ejector using environmentally friendly refrigerants.
  • Identifiant de la fiche : 2004-2242
  • Langues : Anglais
  • Source : Applied Thermal Engineering - vol. 24 - n. 5-6
  • Date d'édition : 04/2004

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