Partager

Document IIF

Analyse expérimentale de divers dispositifs de détente pour les unités de condensation fonctionnant au CO2 subcritique.

Experimental analysis of various expansion devices for subcritical CO2 condensing units.

Numéro : 1002

Auteurs : GULLO P., KÆRN M. R.

Résumé

The aim of this investigation is to experimentally compare the performance of three different expansion devices operating in subcritical CO2 condensing units. The first considered expansion device was the conventional high pressure expansion valve (baseline). The second evaluated expansion device was an ejector relying on the novel pulse-width modulation (PWM) technique to modulate the refrigerant flow effectively. Finally, the PWM approach was used for controlling the ejector motive nozzle while the refrigerant was not allowed to be drawn by the ejector suction nozzle. The results showed that the PWM motive nozzle offers similar effectiveness to a conventional high pressure valve in subcritical regime. Also, it was observed that the PWM ejector could control the high pressure effectively as well as increase the energy efficiency by up to 5.3 % compared to the baseline in transition regime. No need for the installation of the conventional high pressure valve was observed.

Documents disponibles

Format PDF

Pages : 7 p.

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 : Experimental analysis of various expansion devices for subcritical CO2 condensing units.
  • Identifiant de la fiche : 30032519
  • Langues : Anglais
  • Source : 8th IIR International Conference on Sustainability and the Cold Chain. Proceedings: June 9-11 2024
  • Date d'édition : 11/06/2024
  • DOI : http://dx.doi.org/10.18462/iir.iccc2024.1002

Liens


Voir d'autres communications du même compte rendu (84)
Voir le compte rendu de la conférence

Indexation