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Document IIF

Diminution de la performance d'un condenseur multitubulaire lorsqu'on remplace le R22 par des mélanges zéotropiques. 1. Analyse des données expérimentales.

Reasons for drop in shell-and-tube condenser performance when replacing R22 with zeotropic mixtures. 1. Analysis of experimental findings.

Auteurs : SAJJAN D., KARLSSON T., VAMLING L.

Type d'article : Article, Article de la RIF

Résumé

An experimental and theoretical investigation was made to find out the reasons for the drop in shell-and-tube condenser performance when replacing R22 with a zeotropic mixture R407C. Measurements show that at lower condenser loads the reduction in performance can be as large as 70% compared to the full condenser load. Calculation results are compared with experimental results for two different condensers, one with micro-finned tubes and one with 3-D finned tubes. Calculations show that the degree of mixing of the newly formed condensate on a tube and the drained condensate is a factor influential enough to explain the performance drop. 3-D finned tubes seem to have better mixing in the condensate than integral finned tubes.

Documents disponibles

Format PDF

Pages : 552-560

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 : Reasons for drop in shell-and-tube condenser performance when replacing R22 with zeotropic mixtures. 1. Analysis of experimental findings.
  • Identifiant de la fiche : 2004-2791
  • Langues : Anglais
  • Source : International Journal of Refrigeration - Revue Internationale du Froid - vol. 27 - n. 5
  • Date d'édition : 08/2004

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