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Développement d'un absorbeur à ammoniac/eau à écoulement turbulent intermittent. Partie II. Caractérisation du transfert local de masse et de chaleur à l'aide de la réduction des données.

Development of a slug flow absorber working with ammonia-water mixture. Part II. Data reduction model for local heat and mass transfer characterization.

Auteurs : KIM H. Y., SAHA B. B., KOYAMA S.

Type d'article : Article, Article de la RIF

Résumé

This study deals with a data reduction model for clarifying experimental results of a counter-current slug flow absorber, working with ammonia-water mixture, for significantly low solution flow rate conditions. A data reduction model to obtain the local heat and mass transfer coefficient on the liquid side is proposed by using the drift flux model to analyse the flow characteristics. The control volume method and heat and mass transfer analogy are employed to solve the combined heat and mass transfer problem. As a result, it is found that the local heat and mass transfer coefficient on the liquid side of the absorber is greatly influenced by the flow pattern. The heat and mass transfer coefficient at the frost flow region is higher than that at the slug flow region due to flow disturbance and random fluctuation. The solution flow rate and gas flow rate have an influence on the local heat and mass transfer coefficient at the frost flow region. However, it is insignificant at the slug flow region.

Documents disponibles

Format PDF

Pages : 698-706

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 : Development of a slug flow absorber working with ammonia-water mixture. Part II. Data reduction model for local heat and mass transfer characterization.
  • Identifiant de la fiche : 2004-0085
  • Langues : Anglais
  • Source : International Journal of Refrigeration - Revue Internationale du Froid - vol. 26 - n. 6
  • Date d'édition : 09/2003

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