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Document IIF

Un nouveau système frigorifique à éjecteur utilisant des mélanges zéotropiques.

A new ejector refrigeration system with zeotropic mixtures.

Numéro : pap. ID: 500

Auteurs : CHEN J. Y., PALM B., LUNDQVIST P.

Résumé

A new ejector refrigeration system (NERS) using zeotropic mixture is theoretical studied in the paper. R32/R134a, R32/R152a, R134a/R142b, R152a/R142b, R290/R600a and R600a/R600 are selected as the working fluids in the analysis. The comparison between this NERS and the conventional ejector refrigeration system (CERS) is made under the same operating condition. It is found that this new system has higher COPs than the CERS. The effect of operating conditions and the composition on the performance of this new system are presented. An exergy analysis is carried out to study the loss within each component of the system. It is observed that the irreversibility in the ejector represents more than 50% of the total exergy loss. This also emphasizes the necessity for good ejector design and manufacture.

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Pages : 8 p.

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Détails

  • Titre original : A new ejector refrigeration system with zeotropic mixtures.
  • Identifiant de la fiche : 30003219
  • Langues : Anglais
  • Source : Proceedings of the 23rd IIR International Congress of Refrigeration: Prague, Czech Republic, August 21-26, 2011. Overarching theme: Refrigeration for Sustainable Development.
  • Date d'édition : 21/08/2011

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