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Document IIF

Modélisation des absorbeurs à faisceaux de tubes horizontaux dans les refroidisseurs à absorption.

Modelling of horizontal tube-bundle absorbers of absorption cooling systems.

Auteurs : SULTANA P., WIJEYSUNDERA N. E., HO J. C., et al.

Type d'article : Article, Article de la RIF

Résumé

A simplified-coupled model was developed for the analysis and design of horizontal tubular absorbers. The analysis included film-flow over tubes, drop and jet flow between tubes and the serpentine flow of the coolant. The predictions of the model were compared with experimental data and the predictions of a numerical simulation model. Both models included inter-tube flow and absorption. There is good agreement between the predictions of the two models, particularly when spatially varying heat and mass transfer coefficients are used in the simplified model. There is reasonable trend-wise agreement between the predictions of the two models and the experimental data. The simplified model was used to extract heat and mass transfer coefficients from published experimental data. The approximate expressions obtained for the exponents in the simplified model agreed well with exact analysis. The modeling of round tubes as vertical plate segments result in significant deviations in the predictions of the solution temperature and concentration. Partial wetting of the absorber tubes by the solution has a marked effect on the predictions of the two models.

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Format PDF

Pages : 709-723

Disponible

  • Prix public

    20 €

  • Prix membre*

    Gratuit

* meilleur tarif applicable selon le type d'adhésion (voir le détail des avantages des adhésions individuelles et collectives)

Détails

  • Titre original : Modelling of horizontal tube-bundle absorbers of absorption cooling systems.
  • Identifiant de la fiche : 2007-1091
  • Langues : Anglais
  • Source : International Journal of Refrigeration - Revue Internationale du Froid - vol. 30 - n. 4
  • Date d'édition : 06/2007

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