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Document IIF

Refroidisseur d'eau avec des compresseurs secs à vitesse variable.

Air-conditioning water chiller with variable speed and totally oil-free compressors.

Auteurs : MINEA V.

Résumé

The energy performances of a 440-kW air-conditioning factory-assembled water chiller with two totally oil-free, variable-speed compressors are presented. The new water chiller has been designed for an institutional HVAC system with mostly process air-conditioning charges. Several thermodynamic and electrical parameters allowed calculating the non-standard part-load values for summer operation in a cold climate. The results prove that variable-speed compressors with magnetic bearings and digital electronic controls for air-cooled water chillers achieve high energy efficiencies. Compared to the replaced 25-years old water chiller, the part-load efficiency has been improved by 49%, while ensuring similar indoor thermal conditions for process equipment and occupants, and generating less noise.

Documents disponibles

Format PDF

Pages : ICR07-B2-192

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 : Air-conditioning water chiller with variable speed and totally oil-free compressors.
  • Identifiant de la fiche : 2007-2230
  • Langues : Anglais
  • Source : ICR 2007. Refrigeration Creates the Future. Proceedings of the 22nd IIR International Congress of Refrigeration.
  • Date d'édition : 21/08/2007

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