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Document IIF

Effets de l'encrassage biologique du côté air sur le transfert de chaleur et la chute de pression dans les échangeurs de chaleur à tubes ailetés.

Effects of biofouling on air-side heat transfer and pressure drop for finned tube heat exchangers.

Auteurs : PU H., DING G. L., MA X. K., et al.

Type d'article : Article, Article de la RIF

Résumé

Experimental investigations on the effects of biofouling on air-side heat transfer and pressure drop for three biofouled finned tube heat exchangers and one clean finned tube heat exchanger were performed. Artificial accelerated method of microorganism growth on the fin surface was used for simulating the biofouled finned tube heat exchangers. Experimental results indicate that the effects of biofouling on the air-side heat transfer coefficient decreases 7.2% at 2.0 m/s when the biofouled area ratio is 10%, while it decreases 15.9% at 2.0 m/s when the biofouled area ratio is 60%, and biofouling causes a 21.8 to about 41.3% increase in pressure drop when the air velocity is between 0.5 and 2.0 m/s. The increase of inlet air velocity is helpful to improve the long-term performance of finned tube heat exchanger. Biofouling makes the hydrophilic coating failure, and the condensation water easily converges on the fin surface where biofouling grows.

Documents disponibles

Format PDF

Pages : 1032-1040

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 : Effects of biofouling on air-side heat transfer and pressure drop for finned tube heat exchangers.
  • Identifiant de la fiche : 2009-1510
  • Langues : Anglais
  • Source : International Journal of Refrigeration - Revue Internationale du Froid - vol. 32 - n. 5
  • Date d'édition : 08/2009

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