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Echangeur de chaleur à courant croisé à tubes ailetés eau chaude-air : solution précise de l'équation différentielle partielle.

Exact solution to the governing partial differential equation (PDE) of a hot water-to-air finned tube cross-flow heat exchanger.

Auteurs : DELNERO C. C., DREISIGMEYER D., HITTLE D. C., et al.

Type d'article : Article

Résumé

A new dynamic coil model is presented. This model is developed via the exact solution of a previously unsolved partial differential equation that governs the coil dynamics for a step change in water flow rate. This new model is the first step toward developing a future model that can accurately predict the coil dynamics for several varying coil inlet conditions expected to occur under multi-input multi-output control. The new model is compared with previously published simplified PDE coil models, which used an approximation to this exact solution, and against actual measured coil dynamics. The new coil model is shown to have superior performance in predicting the actual coil behaviour.

Détails

  • Titre original : Exact solution to the governing partial differential equation (PDE) of a hot water-to-air finned tube cross-flow heat exchanger.
  • Identifiant de la fiche : 2004-1087
  • Langues : Anglais
  • Source : HVAC&R Research - vol. 10 - n. 1
  • Date d'édition : 01/2004
  • Document disponible en consultation à la bibliothèque du siège de l'IIF uniquement.

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