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Document IIF

Évaluation des fluides actifs pour le système frigorifique à éjecteur.

Screening of working fluids for the ejector refrigeration system.

Auteurs : CHEN J., HAVTUN H., PALM B.

Type d'article : Article, Article de la RIF

Résumé

For an ejector refrigeration system, the working fluid significantly influences the ejector behavior and system performance as well as ejector design. There are three categories of working fluids: wet ?uids, dry ?uids and isentropic ?uids. Four wet fluids (R134a, R152a, R290 and R430A), four dry fluids (R245fa, R600, R600a and R1234ze) and one isentropic fluid (R436B) are selected in the paper. Special consideration is paid to the superheat of the ejector primary flow. This superheat is needed not only for wet fluids, but also for dry fluids and isentropic fluids at some cases, to eliminate droplets inside the ejector. A minimum superheat is found, and it is dependent on the used working fluid and the operating temperatures as well as the ejector nozzle efficiency. The comparison among these nine candidates indicates that R600 is a good candidate for the ejector refrigeration system due to a relatively high COP and its low environmental impact.

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Pages : 1-14

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    20 €

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    Gratuit

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Détails

  • Titre original : Screening of working fluids for the ejector refrigeration system.
  • Identifiant de la fiche : 30012489
  • Langues : Anglais
  • Source : International Journal of Refrigeration - Revue Internationale du Froid - vol. 47
  • Date d'édition : 11/2014

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