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Une solution exacte pour la conduction de chaleur dans une dalle à deux dimensions sur une ailette à une dimension en régime permanent : application aux échangeurs de chaleur givrés.

An exact solution to steady heat conduction in a two-dimensional slab on a one-dimensional fin: application to frosted heat exchangers.

Auteurs : XIA Y., JACOBI A. M.

Type d'article : Article

Résumé

The thermal conditions for frost forming on a metallic fin are considered, and a numerical solution to the two-dimensional conduction problem is used to identify the parametric space for which the problem reduces to a two-dimensional slab on a one-dimensional fin. An analytical solution gives rise to an eigen value problem that requires an unusual scalar product definition. A one-term approximation to the new analytical solution provides fin efficiency calculations useful for a range of conditions, including most frosted-coated metallic fins. The series solution and the one-term approximation are of general applicability to low-conductivity coatings on high-conductivity fins.

Détails

  • Titre original : An exact solution to steady heat conduction in a two-dimensional slab on a one-dimensional fin: application to frosted heat exchangers.
  • Identifiant de la fiche : 2005-0098
  • Langues : Anglais
  • Source : International Journal of Heat and Mass Transfer - vol. 47 - n. 14-16
  • Date d'édition : 07/2004

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