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Document IIF

Corrélation expérimentale entre le transfert de chaleur et de masse pour de l'absorption à l'ammoniac-eau à film tombant.

Experimental correlation of combined heat and mass transfer for ammonia-water falling film absorption.

Auteurs : KANG Y. T., AKISAWA A., KASHIWAGI T.

Type d'article : Article, Article de la RIF

Résumé

Experimental analysis was performed for ammonia-water falling film absorption process in a plate heat exchanger with enhanced surfaces such as offset strip fin. The article examines the effects of liquid and vapour flow characteristics, inlet subcooling of the liquid flow and inlet concentration difference on heat and mass transfer performance. The inlet liquid concentration was selected as 5, 10 and 15% of ammonia by mass while the inlet vapour concentration was varied from 64.7 to 79.7%. It was found that before absorption started, there was a rectification process as the top of the test section by the inlet subcooling effect. Water desorption phenomenon was found near the bottom of the test section. It was found that the lower inlet liquid temperature and the higher inlet vapour temperature, the higher Nusselt and Sherwood numbers are obtained.

Documents disponibles

Format PDF

Pages : 250-262

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 : Experimental correlation of combined heat and mass transfer for ammonia-water falling film absorption.
  • Identifiant de la fiche : 1999-2896
  • Langues : Anglais
  • Source : International Journal of Refrigeration - Revue Internationale du Froid - vol. 22 - n. 4
  • Date d'édition : 06/1999

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