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Effets combinés de la conduction thermique longitudinale, de l'écoulement du fluide non uniforme à l'entrée et la température non uniforme dans des échangeurs compacts à tubes à ailettes : méthode des éléments finis.

The combined effects of wall longitudinal heat conduction, inlet fluid flow nonuniformity and temperature nonuniformity in compact tube-fin heat exchangers: a finite element method.

Auteurs : RANGANAYAKULU C., SEETHARAMU K. N.

Type d'article : Article

Résumé

A finite element analysis of a crossflow tube-fin compact heat exchanger is presented (water in tube, air outside). The analysis takes into account the combined effects of one-dimensional longitudinal heat conduction through the exchanger wall and nonuniform inlet fluid flow and temperature distributions on both hot and cold fluid sides. A mathematical equation is developed to generate different types of fluid flow/temperature maldistribution models. Using these models, the exchanger effectiveness and its deterioration due to the combined effects of longitudinal heat conduction and flow/temperature nonuniformity are calculated for various design and operating conditions of the exchanger.

Détails

  • Titre original : The combined effects of wall longitudinal heat conduction, inlet fluid flow nonuniformity and temperature nonuniformity in compact tube-fin heat exchangers: a finite element method.
  • Identifiant de la fiche : 2000-0685
  • Langues : Anglais
  • Source : International Journal of Heat and Mass Transfer - vol. 42 - n. 2
  • Date d'édition : 01/1999

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