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Document IIF

Système frigorifique d'un supermarché au NH3/CO2 avec du CO2 dans les secteurs de refroidissement et de congélation : aspects techniques, énergétiques et économiques.

NH3/CO2 supermarket refrigeration system with CO2 in the cooling and freezing section: technical, energetic and economical issues.

Auteurs : RIESSEN G. J. van

Résumé

The first supermarket refrigeration system in the Netherlands with only natural refrigerants became operational in March 2004 and is located in Bunschoten. The NH3/CO2 cascade system has NH3 as primary refrigerant evaporating at -16 °C in two parallel cascade heat exchangers, where CO2 is condensing at -12 °C. One CO2 circuit is used for the cooling, which is an innovation for supermarket refrigeration. From the cascade heat exchanger, CO2 is pumped into the cooling section. In the other CO2 circuit, direct expansion and a CO2 compressor provides the freezing section with CO2 of -30 °C. The most experiments with CO2 in supermarkets in Europe have been restricted to the application of CO2 in the freezing section. Therefore, the application of CO2 as a phase-changing secondary refrigerant in the cooling section is an interesting innovation. The technical, energetic and economical aspects of the installation are considered. The technical operation of the cascade refrigeration system in a supermarket is discussed. The energy savings are calculated and the installation and running costs evaluated. Experiences and problems during the installation and control of the installation are discussed.

Documents disponibles

Format PDF

Pages : 2004-2

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 : NH3/CO2 supermarket refrigeration system with CO2 in the cooling and freezing section: technical, energetic and economical issues.
  • Identifiant de la fiche : 2005-1896
  • Langues : Anglais
  • Source : Natural Working Fluids 2004: 6th IIR-Gustav Lorentzen Conference
  • Date d'édition : 01/08/2004

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