Partager

Document IIF

Amélioration de l'écoulement et de la performance en termes de transfert de chaleur des condenseurs à plusieurs serpentins à l'aide de différentes configurations des serpentins.

An improvement of airflow and heat transfer performance of multi-coil condensers by different coil configurations.

Auteurs : LEE T. S., WU W. C., CHUAH Y. K., et al.

Type d'article : Article, Article de la RIF

Résumé

Mal-distribution of airflow is an important factor for the performance of air-cooled multi-coil air-cooled condensers. This study is an attempt to investigate the effects of different included angles between the coils of the condenser. It has been found in this study that it can be a mean to improve the performance of multi-coil condensers without using larger heat transfer surfaces. A commercially used four-coil condenser of an air-cooled water chiller was used as the base case in the tests and analysis. The results show that the variation of the included angle can increase the airflow rate by 7.85%, which corresponds to 5.29% increase in heat transfer. The improvements were found to be due to the reduction of the stagnant flow regions of the heat exchanger coils, and more even flow distribution through the coils. Test data were used to verify the computer model of the four-coil heat exchanger. The same tested fan performance characteristic was used in all of the analyses. The research results are important as air-cooled condensing units can be designed to better performance merely by changing the configuration of the coil arrangements.

Documents disponibles

Format PDF

Pages : pp. 1370-1376

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 : An improvement of airflow and heat transfer performance of multi-coil condensers by different coil configurations.
  • Identifiant de la fiche : 2010-1070
  • Langues : Anglais
  • Source : International Journal of Refrigeration - Revue Internationale du Froid - vol. 33 - n. 7
  • Date d'édition : 11/2010

Liens


Voir d'autres articles du même numéro (24)
Voir la source

Indexation