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Influence de la forme de l'orifice de refoulement sur la performance d'un compresseur à vis et sur les pulsations de gaz.

The influence of the discharge port shape on screw compressor performance and gas pulsations.

Auteurs : MUJIC E., KOVACEVIC A., STOSIC N., et al.

Résumé

In a screw compressor, both pressure pulsations in the discharge chamber and performance are affected by the design of the discharge port. A function for calculating the real flow area of the discharge port has been included in two analytical models for evaluating this. The predicted results, thus obtained, showed that this function varies according to the shape of the discharge port in a manner that influences the amplitude of the gas pulsations and hence the noise generated in the discharge chamber. With the aid of the model, a port shape was designed to minimise these pulsations and thereby reduce noise levels by up to 5 decibels. However, reducing sound emissions by this means, slightly lowered the compressor efficiency. An experimental programme was then carried out to investigate this and good agreement was obtained between the predicted and measured values.

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  • Prix public

    20 €

  • Prix membre*

    15 €

* meilleur tarif applicable selon le type d'adhésion (voir le détail des avantages des adhésions individuelles et collectives)

Détails

  • Titre original : The influence of the discharge port shape on screw compressor performance and gas pulsations.
  • Identifiant de la fiche : 2008-2479
  • Langues : Anglais
  • Source : 2008 Purdue Conferences. 19th International Compressor Engineering Conference at Purdue & 12th International Refrigeration and Air-Conditioning Conference at Purdue [CD-ROM].
  • Date d'édition : 14/07/2008

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