Partager

Document IIF

Système frigorifique au R744 transcritique intégrant un échangeur de pression pour la récupération de chaleur : nouvelle analyse dynamique pour les supermarchés.

A transcritical R744 refrigeration system integrated with pressure exchanger for heat recovery – A novel dynamic analysis for supermarket application.

Numéro : 1127

Auteurs : SENGUPTA A., DASGUPTA M. S.

Résumé

Heat recovery potential of a R744 refrigeration system integrated with Pressure Exchanger (PX) is explored through dynamic analysis. A mathematical model of PX, developed using CFD simulation and validated using published experimental data, is then utilized to construct a state-of-the-art model of the PX using the standard Thermal Systems library in Dymola©. An Italian supermarket referred in MultiPACK project having low and medium temperature display cabinets total average cooling load of 132 kW is simulated. The effect of load fluctuation on the flow distribution between the PX and a high pressure expansion valve operating in parallel are assessed to get a better insight. The proposed configuration delivers an average heat load of 160 kW and a pressure lift of 44 bar for a rotor speed of 1000 RPM, which is significantly higher than a conventional work recovery device like an ejector. The heating COP varies between 4.5 to 5.75.

Documents disponibles

Format PDF

Pages : 12 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 : A transcritical R744 refrigeration system integrated with pressure exchanger for heat recovery – A novel dynamic analysis for supermarket application.
  • Identifiant de la fiche : 30032660
  • Langues : Anglais
  • Source : 16th IIR-Gustav Lorentzen Conference on Natural Refrigerants (GL2024). Proceedings. University of Maryland, College Park, Maryland, USA, August 11-14 2024
  • Date d'édition : 08/2024
  • DOI : http://dx.doi.org/10.18462/iir.gl2024.1127

Liens


Voir d'autres communications du même compte rendu (62)
Voir le compte rendu de la conférence

Indexation