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Document IIF

Compresseur frigorifique à vis avec régulation de la charge partielle et réglage du Vi.

Refrigeration screw compressor with part load control and Vi adjustment.

Auteurs : MOSEMANN D.

Résumé

The paper deals with slide controlled screw compressors. In the housing of that new compressor, two parallel axial shiftable slide valves one for capacity control and one for Vi control in parallel to the rotors are arranged. The changeable position of the Vi-slide allows an adaptation of internal compression ratio under full load and under part load condition too. The position of capacity slide influences the refrigeration capacity of the refrigeration plant controlled by a capacity controller. The position of the new Vi slide influences the power consumption of the screw compressor at full load and part load, controlled depending on calculated Vi value. Resources for calculated Vi values are measured values depending on power consumption at full load and part load operation conditions measured with different refrigerants. The new compressor controller adjusts the Vi slide in the calculated position. Operation under part load down to 40% capacity is more efficient.

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  • 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 : Refrigeration screw compressor with part load control and Vi adjustment.
  • Identifiant de la fiche : 2000-1291
  • Langues : Anglais
  • Source : 20th International Congress of Refrigeration: Refrigeration into the Third Millennium.
  • Date d'édition : 19/09/1999

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