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Un modèle thermique à paramètres agrégés pour des compresseurs à spirale incluant la solution de la distribution de température le long des enroulements de la spirale.

A lumped-parameter thermal model for scroll compressors including the solution for the temperature distribution along the scroll wraps.

Auteurs : DINIZ M. C., PEREIRA E. L. L., DESCHAMPS C. J.

Type d'article : Article, Article de la RIF

Résumé

A lumped-parameter thermal model is presented to predict the temperature in different chambers and components inside scroll compressors with particular attention to gas superheating in the suction process. Thermal resistances between the components are based on global heat transfer conductances, whereas conduction heat transfer through the scroll wraps is solved via a one-dimensional finite volume method. The thermal model was coupled to a thermodynamic model of the compression cycle and then applied to simulate the compressor performance under different conditions of speed and pressure ratio. The model was able to correctly predict the compressor temperature for operating conditions within the range of those adopted for its calibration. The results showed a strong coupling between the compressor thermal profile and the temperatures of the motor and lubricating oil. It has also been found that heat conduction through the scroll wraps reduces slightly the discharge temperature.

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Format PDF

Pages : 184-194

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Détails

  • Titre original : A lumped-parameter thermal model for scroll compressors including the solution for the temperature distribution along the scroll wraps.
  • Identifiant de la fiche : 30014487
  • Langues : Anglais
  • Source : International Journal of Refrigeration - Revue Internationale du Froid - vol. 53
  • Date d'édition : 05/2015

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