Partager

Interprétation des données côté air et analyse de la performance d'échangeurs de chaleur avec transfert simultané de chaleur et de masse : surfaces mouillées et givrées.

Air-side data interpretation and performance analysis for heat exchangers with simultaneous heat and mass transfer: wet and frosted surfaces.

Auteurs : XIA Y., JACOBI A. M.

Type d'article : Article

Résumé

Data reduction methods for wet- and frosted-surface heat exchangers are reviewed, and logarithmic-mean temperature difference (LMTD) and logarithmic-mean enthalpy difference (LMED) methods for data interpretation are formulated, including fin efficiency expressions for flat-tube heat exchangers with constant-area fins. With these improved formulations for data interpretation in place, the two methods are compared using a numerical simulation of a flat-plate heat exchanger. For all conditions considered - spanning wet and frosted surfaces - the new UA-LMTD method provides the air-side convective heat transfer coefficient to within 3% and is more accurate than the HA-LMED method, which results in large errors under some conditions. [Reprinted with permission from Elsevier, Copyright, 2005].

Détails

  • Titre original : Air-side data interpretation and performance analysis for heat exchangers with simultaneous heat and mass transfer: wet and frosted surfaces.
  • Identifiant de la fiche : 2006-1658
  • Langues : Anglais
  • Source : International Journal of Heat and Mass Transfer - vol. 48 - n. 25-26
  • Date d'édition : 04/2006

Liens


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

Indexation