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Performance hydraulique côté air des échangeurs de chaleur à ailettes en aluminium à persiennes (+ erratum).

Air-side thermal hydraulic performance of multi-louvered fin aluminium heat exchangers (+ erratum).

Auteurs : KIM M. H., BULLARD C. W.

Type d'article : Article, Article de la RIF

Résumé

An experimental study on the air-side heat transfer and pressure drop characteristics for multi-louvered fin and flat tube heat exchangers has been performed. For 45 heat exchangers with different louver angles (15-29°), fin pitches (1.0, 1.4 mm) and flow depths (16, 20, 24 mm), a series of tests were conducted for the air-side Reynolds numbers of 100-600, at a constant tube-side water flow rate of 0.32 m3/h. The inlet temperatures of the air and water for heat exchangers were 21 and 45 °C, respectively. The air-side thermal performance data were analyzed using effectiveness-NTU method for cross-flow heat exchanger with both fluid unmixed conditions. The heat transfer coefficient and pressure drop data for heat exchangers with different geometrical configurations were reported in terms of Colburn j-factors and Fanning friction factor f, as functions of Reynolds number based on louver pitch. The general correlations for j and f factors are developed and compared to other correlations. The f correlation indicates that the flow depth is one of the important parameters for the pressure drop.

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Format PDF

Pages : 390-400

Disponible

  • Prix public

    20 €

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    Gratuit

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Détails

  • Titre original : Air-side thermal hydraulic performance of multi-louvered fin aluminium heat exchangers (+ erratum).
  • Identifiant de la fiche : 2003-0103
  • Langues : Anglais
  • Source : International Journal of Refrigeration - Revue Internationale du Froid - vol. 25 - n. 3
  • Date d'édition : 05/2002

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