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Document IIF

Développement d'un compresseur semi-hermétique biétagé au CO2.

Development of two-stage semi-hermetic CO2 compressors.

Auteurs : NEKSÅ P., DORIN F., REKSTAD H., et al.

Résumé

A semi-hermetic CO2 compressor series in the range of 0.5-12.6 m3/h swept volume is under development (single- and two-stage compressors with two cylinders, running at nominal speeds of 2900 rpm). This corresponds to cooling capacities in the range of 0.6-15 kW at -35 °C evaporating temperature. Different design issues are being discussed. Measurements of compressor efficiencies, temperatures and pressures are presented for two-stage compressors in the 4-pole assembly (1450 rpm) and also for 2900 rpm. At this stage of the development, the performance is very acceptable. Compared to using a one-stage compressor for low-temperature supermarket refrigeration, a gain in COP of 20% could be realized and probably an additional 30% by using two-stage throttling.

Documents disponibles

Format PDF

Pages : 2000-1

Disponible

  • Prix public

    20 €

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    Gratuit

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Détails

  • Titre original : Development of two-stage semi-hermetic CO2 compressors.
  • Identifiant de la fiche : 2002-0040
  • Langues : Anglais
  • Source : Final proceedings of the 4th IIR-Gustav Lorentzen Conference on Natural Working Fluids at Purdue.
  • Date d'édition : 25/07/2000

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