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Étude expérimentale du processus d'absorption d'eau dans des tubes horizontaux à film tombant avec une solution d'eau/LiBr utilisant des liquides ioniques comme additif : résultats préliminaires.

Experimental study of water absorption process in falling film horizontal tubes with water/LiBr solution using ionic liquids as additive: preliminary results.

Numéro : 96

Auteurs : TARIQ H. A., PRIETO J., CORONAS A.

Résumé

The water/LiBr pair has been widely used in absorption chillers. However, its performance is limited to a certain range of concentrations, due to the risk of salt crystallization. This prevents it from operating at high temperatures in the absorber and does not allow it to produce useful heat at suitable temperatures when functioning as heat pump. This limitation might be overcome by using Ionic liquids (ILs) as additives in the water/LiBr mixture which can improve thermophysical properties. One of the drawbacks of falling-film tubes is the non-uniform distribution of the film on the tube surface. Thermophysical properties of the new mixture as viscosity and surface tension will be of special importance for good wetting. This is a preliminary study on the influence of wettability in the absorption process of water by water/LiBr solutions in a falling film over horizontal tubes and 1,3- Dimethylimidazolium Chloride [dmim][Cl] as additive for heating and cooling purposes.

Documents disponibles

Format PDF

Pages : 7

Disponible

  • Prix public

    20 €

  • Prix membre*

    15 €

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

Détails

  • Titre original : Experimental study of water absorption process in falling film horizontal tubes with water/LiBr solution using ionic liquids as additive: preliminary results.
  • Identifiant de la fiche : 30030357
  • Langues : Anglais
  • Source : XI Congreso Ibérico y IX Congreso Iberoamericano de Ciencias y Técnicas del Frío, CYTEF 2022.
  • Date d'édition : 04/2022

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