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Development of a scroll expander for the CO2 refrigeration cycle.

Développement d'un détendeur à spirale pour le cycle frigorifique au CO2.

Numéro : pap. NS15

Auteurs : NAGATA H., KAKUDA M., SEKIYA S., et al.

Résumé

In this study, a scroll expander was developed to recover the throttling loss in CO2 cycles. In cycles with an intercooler, the expander drives directly the second-stage compressor using the energy recovered from the expansion process. To carry out this function, a back-to-back scroll mechanism was applied to the expansion and sub-compression processes. A prototype of the expander/sub-compressor was designed by calculating the gas pressure in the chambers and estimating the gas forces. The prototype was built and tested. According to the experimental results of the prototype device, the sub-compressor increased the pressure by 1.30 MPa, while the pressure drop between the inlet and outlet of the expander was 3.19 MPa. Based on the gas state at the expander inlet, the volumetric efficiency was about 104%.

Documents disponibles

Format PDF

Pages : 8 p.

Disponible

  • Prix public

    15 €

  • Prix membre*

    11 €

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

Détails

  • Titre original : Development of a scroll expander for the CO2 refrigeration cycle.
  • Identifiant de la fiche : 30000530
  • Langues : Anglais
  • Source : Measures to address climate change. 2010 International Symposium on Next-generation Air Conditioning and Refrigeration Technology: February 17-19, Tokyo, Japan.
  • Date d'édition : 17/02/2010

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