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Analyse de sensibilité relative au choix des échangeurs de chaleur et à son influence sur l’efficacité d’un cycle transcritique au CO2 avec sous-refroidissement mécanique indirect dédié.

Sensitivity analysis on heat exchangers selection and its influence on the efficiency of a transcritical CO2 cycle with indirect dedicated mechanical subcooling.

Numéro : 2633

Auteurs : BIYOGO-OBONO R. E., ILLÁN-GÓMEZ F., GARCÍA-CASCALES J. R., VELASCO F. J. S.

Résumé

This work evaluates through numerical modeling, the efficiency of an air-to-water heat pump that operates using a transcritical CO2 cycle assisted by an indirect dedicated mechanical subcooling (IDMS) cycle, with R1234ze(E) as the refrigerant. The research aims to analyze how the size of the heat exchangers used as the evaporator and the condenser for the IDMS cycle affects the overall efficiency of the system. A numerical model previously developed in Matlab® is used to modify the refrigerant and compressor of the IDMS cycle and to determine the optimal number of evaporator and condenser plates that maximize the efficiency of the whole system. The compressor model is derived from manufacturer correlations, whereas the models for the heat exchangers are obtained through a parametric study developed using IMST-ART® to characterize their operating parameters based on their number of plates and the inlet conditions of water and refrigerant. Once the models are developed, they are integrated into the model of the overall system to find the heat exchanger sizes that maximize the efficiency of the system.

Documents disponibles

Format PDF

Pages : 6 p.

Disponible

  • 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 : Sensitivity analysis on heat exchangers selection and its influence on the efficiency of a transcritical CO2 cycle with indirect dedicated mechanical subcooling.
  • Identifiant de la fiche : 30033409
  • Langues : Anglais
  • Sujet : Environnement
  • Source : 12th CYTEF Congress - Ibero-American Congress of Refrigeration Science and Technology.
  • Date d'édition : 26/06/2024
  • DOI : http://dx.doi.org/10.21134/zawd5b64

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