Partager

Document IIF

Modélisation thermique du moteur d'un compresseur frigorifique à vis semi-hermétique sous conditions de charge partielle.

Thermal modeling for the motor in semi-hermetic screw refrigeration compressors under part-load conditions.

Auteurs : CHEN W., XING Z., SHEN J., et al.

Type d'article : Article, Article de la RIF

Résumé

In the semi-hermetic screw refrigeration compressor, the motor is mostly cooled down by suction refrigerant before it flows into the compressor suction port. To investigate cooling effects of the motor and performance of the compressor under part-load conditions, a lumped parameter model describing heat-transfer characteristics inside the motor and a part-load model of screw refrigeration compressor are developed and validated. Heating effects at compressor suction end and heat conduction from the male rotor screw to the motor shaft are taken into account. Nodes representing refrigerant inside the motor cooling passages are modeled separately. Temperature rise of refrigerant through the motor increases when the compressor load drops by either suction volume variation or speed variation. With drop of the compressor load, stator winding temperature goes up in the case of suction volume variation by slide valve motion, but it lowers in the case of speed variation by frequency conversion.

Documents disponibles

Format PDF

Pages : 1874-1882

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 : Thermal modeling for the motor in semi-hermetic screw refrigeration compressors under part-load conditions.
  • Identifiant de la fiche : 30009779
  • Langues : Anglais
  • Source : International Journal of Refrigeration - Revue Internationale du Froid - vol. 36 - n. 7
  • Date d'édition : 11/2013

Liens


Voir d'autres articles du même numéro (18)
Voir la source

Indexation