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Document IIF

Évaluation expérimentale d'une installation frigorifique transcritique au CO2 avec un sous-refroidissement mécanique dédié.

Experimental evaluation of a CO2 transcritical refrigeration plant with dedicated mechanical subcooling.

Auteurs : LLOPIS R., NEBOT-ANDRÉS L., CABELLO R., et al.

Type d'article : Article, Article de la RIF

Résumé

CO2 transcritical refrigeration cycles require optimization to reach the performance of conventional solutions at high ambient temperatures. Theoretical studies demonstrated that the combination of a transcritical cycle with a mechanical subcooling cycle improves its performance; however, any experimentation with CO2 has been found. This work presents the energy improvements of the use of a mechanical subcooling cycle in combination with a CO2 transcritical refrigeration plant, experimentally. It tested the combination of a R1234yf single-stage refrigeration cycle with a semihermetic compressor for the mechanical subcooling cycle, with a single-stage CO2 transcritical refrigeration plant with a semihermetic compressor. The combination is evaluated at two evaporating levels of the CO2 cycle (0 and -10 °C) and three heat rejection temperatures (24, 30 and 40 °C). The optimum operating conditions and capacity and COP improvements are analysed with maximum increments on capacity of 55.7% and 30.3% on COP.

Documents disponibles

Format PDF

Pages : 361-368

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 : Experimental evaluation of a CO2 transcritical refrigeration plant with dedicated mechanical subcooling.
  • Identifiant de la fiche : 30018602
  • Langues : Anglais
  • Source : International Journal of Refrigeration - Revue Internationale du Froid - vol. 69
  • Date d'édition : 09/2016

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