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Mécanisme d'amélioration d'absorption avec emploi d'un agent de surface.

Mechanism of absorption enhancement by surfactant.

Auteurs : DAIGUJI H., HIHARA E., SAITO T.

Type d'article : Article

Résumé

In absorption refrigeration technology, it is well known that the water vapour absorption into the lithium bromide aqueous solution is enhanced by the addition of surfactant. The Marangoni effect plays a role but its mechanism is not clearly understood yet. In the study, the existence of instability due to the Marangoni effect was investigated using the linear stability analysis, based on the salting out effect. Then the vapour absorption augmentation was estimated by the numerical simulation of cellular convection. Both theoretical results qualitatively agree well with the experimental ones.

Détails

  • Titre original : Mechanism of absorption enhancement by surfactant.
  • Identifiant de la fiche : 1998-0876
  • Langues : Anglais
  • Source : International Journal of Heat and Mass Transfer - vol. 40 - n. 8
  • Date d'édition : 05/1997

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