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Document IIF

L’effet du fractionnement à l’intérieur du réservoir de stockage et l’impact de l’architecture du cycle sur la performance du système à éjecteur avec un mélange zéotrope de R1234yf/R32 à faible PRP.

The effect of fractionation inside the storage vessel and the impact of cycle architecture on the performance of ejector system with low-GWP zeotropic mixture of R1234yf/R32.

Numéro : 0373

Auteurs : HAIDER M.

Résumé

This study numerically evaluates the performance gain potentials of different cycle architectures using low-GWP zeotropic mixtures of R1234yf/R32. Heat exchangers are modelled using a finite volume approach, ejector is modelled using modified Kornhauser model, and the variable speed compressor is modelled using 10-coefficient polynomials. The study finds that the fractionation inside the storage vessel and its location in the cycle can have a significant impact on the system performance. The COP of systems like conventional system and condenser outlet split system that employ a receiver and have the same circulating composition, improves by 12-22 % when a small amount of high-volatile substance is added. However, COP of the standard ejector cycle having a separator, and thus, two different circulating compositions for high and low-sides, decreases by almost 15 %. Capacity can almost be doubled for all the system by modulating the composition. These results are significantly helpful in designing future experiments.

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Format PDF

Pages : 10

Disponible

  • Prix public

    20 €

  • Prix membre*

    Gratuit

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Détails

  • Titre original : The effect of fractionation inside the storage vessel and the impact of cycle architecture on the performance of ejector system with low-GWP zeotropic mixture of R1234yf/R32.
  • Identifiant de la fiche : 30031795
  • Langues : Anglais
  • Sujet : Technologie
  • Source : Proceedings of the 26th IIR International Congress of Refrigeration: Paris , France, August 21-25, 2023.
  • Date d'édition : 21/08/2023
  • DOI : http://dx.doi.org/10.18462/iir.icr.2023.0373

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