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Optimisation du cycle frigorifique muni d'un compresseur centrifuge biétagé et un refroidisseur intermédiaire.

Optimising the refrigeration cycle with a two-stage centrifugal compressor and a flash intercooler.

Auteurs : RÖYTTÄ P., TURUNEN-SAARESTI T., HONKATUKIA J.

Type d'article : Article, Article de la RIF

Résumé

The optimisation of a refrigeration process with a two-stage centrifugal compressor and flash intercooler is presented in this paper. The two-stage centrifugal compressor stages are on the same shaft and the electric motor is cooled with the refrigerant. The performance of the centrifugal compressor is evaluated based on semi-empirical specific-speed curves and the effect of the Reynolds number, surface roughness and tip clearance have also been taken into account. The thermodynamic and transport properties of the working fluids are modelled with a real-gas model. The condensing and evaporation temperatures, the temperature after the flash intercooler, and cooling power have been chosen as fixed values in the process. The aim is to gain a maximum COP. The method of optimisation, the operation of the compressor and flash intercooler, and the method for estimating the electric motor cooling are also discussed in the article.

Documents disponibles

Format PDF

Pages : pp. 1366-1375

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 : Optimising the refrigeration cycle with a two-stage centrifugal compressor and a flash intercooler.
  • Identifiant de la fiche : 2009-1999
  • Langues : Anglais
  • Source : International Journal of Refrigeration - Revue Internationale du Froid - vol. 32 - n. 6
  • Date d'édition : 09/2009

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