Partager

Document IIF

Modèle analytique pour la prévision de l’efficacité des ailettes [suite à un dépôt de particules].

An analytical model for predicting the particle-deposited fin efficiency.

Auteurs : ZHAN F., ZHUANG D., DING G.

Type d'article : Article, Article de la RIF

Résumé

Fins of heat exchangers are gradually deposited by dust particles in most application scenarios, and so a model of particle-deposited fin efficiency is needed for heat transfer prediction. In this study, the expression of fin efficiency for a particle-deposited annular fin was developed by simplifying the fin as two two-dimensional coating layers on a one-dimensional clean fin firstly, and then this expression was extended to rectangular fins with circular holes by the equivalent radius transformation. The analytical solutions for a typical rectangular fin show that the attenuation rate of fin efficiency may increase up to 23.9% if the fin surface is covered by a fouling layer with an average thickness of 4.0?mm. This model can be used to predict the heat transfer rate of fouled heat exchanger with multi-fins, and the validation results show that the accuracy of the proposed model is acceptable in engineering applications.

Documents disponibles

Format PDF

Pages : 265-245

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 analytical model for predicting the particle-deposited fin efficiency.
  • Identifiant de la fiche : 30024321
  • Langues : Anglais
  • Source : International Journal of Refrigeration - Revue Internationale du Froid - vol. 92
  • Date d'édition : 08/2018
  • DOI : http://dx.doi.org/10.1016/j.ijrefrig.2018.03.021

Liens


Voir d'autres articles du même numéro (21)
Voir la source

Indexation