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Evaporation par contact direct lors des régimes d'ébullition homogènes et hétérogènes. 2. Simulation dynamique.

Direct-contact evaporation in the homogeneous and heterogeneous bubbling regimes. 2. Dynamic simulation.

Auteurs : RIBEIRO C. P. Jr, LAGE P. L. C.

Type d'article : Article

Résumé

Considering the bimodal feature of the bubble size distribution in the heterogeneous regime, a recently developed model for simulating direct-contact evaporators operating in the homogeneous regime was extended to the heterogeneous bubbling regime, enabling, thereby, the simulation of a direct-contact evaporator for any bubbling regime. The proposed model includes a correction factor for isothermal gas hold-up correlations to account for heat and mass transfer effects which arise in non-isothermal bubbling. The model predictions were shown to be in good agreement with literature experimental data for the air-water system, considering four different gas superficial velocities. (See also this Bulletin, reference 2005-0627.)

Détails

  • Titre original : Direct-contact evaporation in the homogeneous and heterogeneous bubbling regimes. 2. Dynamic simulation.
  • Identifiant de la fiche : 2005-0628
  • Langues : Anglais
  • Source : International Journal of Heat and Mass Transfer - vol. 47 - n. 17-18
  • Date d'édition : 08/2004

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