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Optimisation de la densité des ailettes d'un échangeur refroidi à l'air.

Optimization of fin density for air cooled heat exchanger.

Numéro : pap. n. R9, 2313

Auteurs : QIAO H., SINGH V., AUTE V., et al.

Résumé

A combination of uniform-thickness fins evenly spaced along a round tube is a common use for current heat exchanger configuration because of ease of manufacturing. Unfortunately, more often than not, the air velocity distribution is not uniform and subject to the influence of many factors such as the structure of the duct and the heat exchanger's orientation with respect to the fan. This necessitates the investigation of optimizing fin distribution under non-uniform air distribution. In this paper, with the aid of a heat exchanger simulation tool, the effect of non-uniform air distribution is investigated. Genetic algorithms are applied to study the optimal distribution of fin density. The optimization results show that no capacity gain is obtained with non-uniform fin density for uniform air distribution. However, for proportionally varied air flw, more than 2% of capacity gain can be achieved. For the parabolic air distribution, capacity gain is between 1.5% and 2%. The potential of fon material savings by using non-uniform fin density can be as high as 10%.

Documents disponibles

Format PDF

Pages : 8 p.

Disponible

  • Prix public

    20 €

  • Prix membre*

    15 €

* meilleur tarif applicable selon le type d'adhésion (voir le détail des avantages des adhésions individuelles et collectives)

Détails

  • Titre original : Optimization of fin density for air cooled heat exchanger.
  • Identifiant de la fiche : 30000643
  • Langues : Anglais
  • Source : 2010 Purdue Conferences. 13th International Refrigeration and Air-Conditioning Conference at Purdue.
  • Date d'édition : 12/07/2010

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