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Caractéristiques d'écoulement, modélisation et simulation d'éjecteurs monophasiques et diphasiques.

Strujne karakteristike, modeliranje i simulacija jednofaznih i dvofaznih ejektora.

Numéro : 15

Auteurs : SAREVSKI V., SAREVSKI M.

Résumé

A review on implementation of the ejector thermo compression in refrigeration systems and heat pumps is presented in this paper. Thermal, flow and performance characteristics of the refrigeration single-phase and two-phase ejectors are analyzed. A calculating procedure for estimation of the main parameters and performance characteristics of the ejectors is presented. The two main sources of thermodynamic irreversibility: the process of momentum transfer in the mixing section and shock waves, or dispersed shock waves, or pseudo-shock waves in the fluid flow field are discussed. The shock waves are feature for gas and dry vapor fluid flow; dispersed shock waves are feature for dominantly vapor two-phase fluid flow; pseudo-shock waves are feature for dominantly liquid two-phase fluid flow. With appropriate choice of refrigerant and with optimal design of the ejector flow field elements the ejector systems can be successfully applied in various refrigeration / heat pump systems, and in combined (hybrid) and polygeneration thermal systems for utilization of low temperature heat, geothermal energy, solar energy and waste heat.

Documents disponibles

Format PDF

Pages : 11 p.

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  • Prix public

    20 €

  • Prix membre*

    15 €

* meilleur tarif applicable selon le type d'adhésion (voir le détail des avantages des adhésions individuelles et collectives)

Détails

  • Titre original : Strujne karakteristike, modeliranje i simulacija jednofaznih i dvofaznih ejektora.
  • Identifiant de la fiche : 30013421
  • Langues : Anglais
  • Source : Zbornik radova. 45. Medunarodnikongres i izložba o grejanju hladenju i klimatizaciji./ Proceedings. 45th International congress and exhibition on heating, refrigeration and air conditioning (HVAC&R).
  • Date d'édition : 03/12/2014

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