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Conversion d'un système commercial frigorifique en cascade (HFC134a/CO2) passant d'un mode direct à un mode indirect : analyse de l'impact énergétique.

Conversion of a direct to an indirect commercial (HFC134a/CO2) cascade refrigeration system: energy impact analysis.

Auteurs : SÁNCHEZ D., LLOPIS R., CABELLO R., et al.

Type d'article : Article, Article de la RIF

Résumé

Energy impact of conversion of a direct HFC134a/CO2 cascade refrigeration system to an indirect HFC134a-secondary fluid / CO2 cascade for commercial applications is experimentally analysed. Refrigeration systems, fully described, have been tested in laboratory conditions, at three condensing temperatures (25, 35 and 45?°C), providing the cooling needs to a cabinet for fresh product (2?°C) and to another for frozen product (-20?°C), both placed inside a climatic chamber simulating the indoor conditions of a supermarket. Energy evaluation considered 24 hour tests of stable operation in each test condition. A decrease from 1.9 to 3.5?K of the evaporation temperature of the high temperature cycle has been measured when using an indirect system. It resulted in a variation of the energy consumption of the whole system between 7.6 to 14.0% when using propylene-glycol/water and between -0.3 to 11.1% when using Temper -20® as secondary fluid.

Documents disponibles

Format PDF

Pages : 183-199

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 : Conversion of a direct to an indirect commercial (HFC134a/CO2) cascade refrigeration system: energy impact analysis.
  • Identifiant de la fiche : 30019844
  • Langues : Anglais
  • Source : International Journal of Refrigeration - Revue Internationale du Froid - vol. 73
  • Date d'édition : 01/2017

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