Partager

Document IIF

Modèle dynamique d'un système frigorifique au CO2 transcritique à détente par éjecteur.

Dynamic model of a transcritical CO2 ejector expansion refrigeration system.

Auteurs : ZHENG L., DENG J., HE Y., et al.

Type d'article : Article, Article de la RIF

Résumé

This paper presents a dynamic model of a transcritical CO2 ejector expansion refrigeration cycle (EERC) which is a promising refrigeration system due to its environment-benign nature and low throttling loss. The mathematical models for gas cooler, evaporator and separator are formulated by using the mass and energy conservation equations. Based on the real properties of CO2, the ejector model is developed and the variable ejector component efficiencies are taken into account because they vary with operation conditions. The compressor and expansive valve are modeled in a set of algebraic equations. The presented transient simulation results are in good agreement with the experimental data. The dynamic behaviors of the system undergoing the change of expansion valve opening and ejector area ratio are observed by the developed model, which helps to understand the characteristics of the EERC and guide the system control.

Documents disponibles

Format PDF

Pages : 247-260

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 : Dynamic model of a transcritical CO2 ejector expansion refrigeration system.
  • Identifiant de la fiche : 30016354
  • Langues : Anglais
  • Source : International Journal of Refrigeration - Revue Internationale du Froid - vol. 60
  • Date d'édition : 12/2015

Liens


Voir d'autres articles du même numéro (26)
Voir la source

Indexation