Partager

Document IIF

Développement et cartographie de performance du pack de récupération du travail de détente à multi éjecteur pour des unités de compression de vapeur de R744.

Development and performance mapping of a multi-ejector expansion work recovery pack for R744 vapour compression units.

Auteurs : BANASIAK K., HAFNER A., KRIEZI E. E., et al.

Type d'article : Article, Article de la RIF

Résumé

A multi-ejector expansion pack, intended as a substitute for a standard high-pressure electronic expansion valve (HPV), was designed, manufactured and experimentally investigated. Four different ejector cartridges were sized to enable a discrete opening characteristic with a binary profile for a parallel-compression R744 system. The system is rated for 70 kW at a 35°C gas cooler outlet temperature and a -3°C evaporation temperature. High values of ejector efficiency, exceeding 0.3 over a broad operation range, were recorded for all four of the cartridges tested under vapour compression conditions. The applicability of the multi-ejector pack as a main flashing device was verified experimentally. Similar profiles of the discharge pressure control error were recorded for both alternative options: expansion purely in the HPV vs. HPV-assisted expansion in the multi-ejector pack.

Documents disponibles

Format PDF

Pages : 265-276

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 : Development and performance mapping of a multi-ejector expansion work recovery pack for R744 vapour compression units.
  • Identifiant de la fiche : 30015237
  • Langues : Anglais
  • Source : International Journal of Refrigeration - Revue Internationale du Froid - vol. 57
  • Date d'édition : 09/2015

Liens


Voir d'autres articles du même numéro (25)
Voir la source

Indexation