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Comparaison de la performance d'un cycle à compression simple au CO2 et d'un cycle à compression biétagé avec refroidisseur intermédiaire.

Performance comparison of transcritical CO2 single compression and two-stage compression cycle with intercooler.

Auteurs : WANG H., MA Y., LI M., et al.

Résumé

As a natural refrigerant, CO2 is a potential substitute for synthesized refrigerants with favourable environmental properties. In order to improve the performance of the transcritical CO2 compression cycle, the mathematical models of the single SCV cycle and the two stage TSCV+IC cycle were developed and the performance were analyzed based on the system constitution, basic principle and characteristics. Under the given calculation condition, the results showed the optimum high pressure of single stage SCV cycle is 8.8 MPa, and the maximal COP is 2.65. The optimum intermediate pressure of TSCV+IC cycle is 5.9 MPa, and the maximal COP is 3.08. Range of chilled water inlet temperature, COPc and COPh of two stage TSCV+IC cycle are about 24.5 and 21.5% higher than single stage SCV cycle, respectively. Range of cooling water inlet temperature, COPc and COPh of TSCV+IC cycle are about 26.5 and 21.4% higher than the SCV cycle.

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Pages : 2008-2

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    20 €

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    Gratuit

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Détails

  • Titre original : Performance comparison of transcritical CO2 single compression and two-stage compression cycle with intercooler.
  • Identifiant de la fiche : 2009-0568
  • Langues : Anglais
  • Source : 8th IIR-Gustav Lorentzen Conference on Natural Working Fluids (GL2008)
  • Date d'édition : 07/09/2008

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