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Analyse numérique d’un système frigorifique transitoire bi-étagé utilisant des fluides frigorigènes à faible PRP et à faible ODP.

A transient two-stage refrigeration system numerical analysis comprehending low-GWP and low-ODP refrigerant fluids.

Numéro : 0163

Auteurs : CARVALHO L. M., RIBEIRO G. B.

Résumé

This study presents a transient numerical analysis of a two-stage refrigeration system for a subcompact battery EV. It also compares the performance of refrigerant fluids with low Global Warming Potential (GWP) and low Ozone Depletion Potential (ODP), namely, R-1234yf, R-1234ze and R-32, over time, with R-134a, from the previous generation. The refrigeration system was modelled using one condenser, two evaporators, one expansion valve and one compressor. One evaporator was employed to regulate the climate within the cabin, and the other was responsible for cooling down the battery pack. The cabin evaporator comprises sensible and latent heat, whereas the battery pack evaporator embodies constant heat-flux boundary condition. This work concludes that the time necessary to reach steady-state indicates that the transient solution governs the system's operation, and it also presents an estimation for energy cost and consumption to run the air-conditioning system.

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Format PDF

Pages : 10 p.

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  • Prix public

    20 €

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    Gratuit

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Détails

  • Titre original : A transient two-stage refrigeration system numerical analysis comprehending low-GWP and low-ODP refrigerant fluids.
  • Identifiant de la fiche : 30031577
  • 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.2023.0163

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