Partager

Une nouvelle approche pertinente pour le coefficient de transfert de chaleur total, y compris l'effet du rayonnement et de la convection au plafond dans une pièce à plafond rafraîchissant.

New approach relevant to total heat transfer coefficient including the effect of radiation and convection at the ceiling in a cooled ceiling room.

Auteurs : KARADAG R.

Type d'article : Article

Résumé

In this study, radiative and convective heat transfer coefficients at the ceiling are determined for a cooled ceiling room. Firstly, convective heat transfer is simulated numerically neglecting the radiative heat transfer at the surfaces, then, radiative heat transfer is calculated theoretically for different surface emissivities for different room dimensions (3 x 3 x 3, 4 x 3 x 4 and 6 x 3 x 4 m) and thermal conditions: T(f) = 25°C, T(w) = 28-36°C and T(c) = 0-25°C. Numerical data is compared with the results of correlations based on experimental data given in literature. New equations related to convective and total (including the effect of convection and radiation) heat transfer coefficients for ceiling are found in the current study. [Reprinted with permission from Elsevier. Copyright, 2008].

Détails

  • Titre original : New approach relevant to total heat transfer coefficient including the effect of radiation and convection at the ceiling in a cooled ceiling room.
  • Identifiant de la fiche : 2009-2107
  • Langues : Anglais
  • Source : Applied Thermal Engineering - vol. 29 - n. 8-9
  • Date d'édition : 06/2009
  • DOI : http://dx.doi.org/10.1016/j.applthermaleng.2008.07.005

Liens


Voir d'autres articles du même numéro (13)
Voir la source

Indexation