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Document IIF

Expérimentation et analyse à l'aide du diagramme P-V d'une machine de détente à piston roulant au CO2.

Testing and analyzing on P-V diagram of CO2 a rolling piston expander.

Auteurs : ZENG X., MA Y., LIU S., et al.

Résumé

Developing high efficient expander replacing throttle valve is one of the effective methods of improving performance of CO2 transcritical refrigeration cycle. Testing on P-T and P-V diagram of CO2 rolling piston expander is discussed. The results show that expansion work in P-V diagram agree with practical recovery power. It is also shown that three different expansion processes can be occurred in expander. Owing to the theoretical expansion Vr in expander is constant after manufacturing, the expander will normal expand if the expansion ratio in practical working conditions equals to Vr; while the expansion ratio is larger than Vr, over-expansion will be produced; under-expansion may be generated as the expansion ratio is lower than Vr. Therefore, some measures that overcoming over-expansion and under-expansion to match the practical work condition of expander are discussed.

Documents disponibles

Format PDF

Pages : ICR07-B2-431

Disponible

  • 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 : Testing and analyzing on P-V diagram of CO2 a rolling piston expander.
  • Identifiant de la fiche : 2007-2572
  • Langues : Anglais
  • Source : ICR 2007. Refrigeration Creates the Future. Proceedings of the 22nd IIR International Congress of Refrigeration.
  • Date d'édition : 21/08/2007

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