Partager

Document IIF

Évaluation des caractéristiques du transfert de chaleur optimal côté air par unité de puissance de friction des échangeurs de chaleur compacts.

An assessment of optimal airside heat transfer per unit friction power characteristics of compact heat exchangers.

Auteurs : QASEM N. A. A., AL-GHAMDI A., ZUBAIR S. M.

Type d'article : Article, Article de la RIF

Résumé

This paper evaluates an optimal airside thermal-hydraulic performance of compact heat exchangers. Seventy-five airside surfaces have been chosen, i.e. standard reference of Kays and London, to represent louver-fin, strip-fin, wavy-fin, plain-fin, pin-fin, finned circular tubes and finned flat tubes. A robust evaluation method is implemented by an estimation of the heat transfer rate per unit pumping power with and without considering the heat exchanger compactness. Experimental data of Colburn j-factor and Fanning friction factor (f) are used to estimate both the heat transfer rates and the friction power, respectively. The results demonstrate that strip-fin surface 1/10-27.03 shows an optimal heat transfer values per unit friction power when the compactness is taken into consideration. Nonetheless, pin-fin surface PF-4(F) shows an optimal heat transfer rate per pumping power when neglecting the importance of the compactness. The geometries having an optimal thermal-hydraulic performance for each airside type (with or without considering the compactness) are recommended as benchmarks to assess the performance of similar airside surfaces.

Documents disponibles

Format PDF

Pages : 479-489

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 assessment of optimal airside heat transfer per unit friction power characteristics of compact heat exchangers.
  • Identifiant de la fiche : 30025529
  • Langues : Anglais
  • Source : International Journal of Refrigeration - Revue Internationale du Froid - vol. 99
  • Date d'édition : 03/2019
  • DOI : http://dx.doi.org/10.1016/j.ijrefrig.2018.12.030

Liens


Voir d'autres articles du même numéro (45)
Voir la source

Indexation