Partager

Document IIF

Étude expérimentale sur la performance du transfert de masse et de chaleur de l’absorption à film tombant sur un tube vertical utilisant une solution de chlorure de lithium.

Experimental study on heat and mass transfer performance of falling film absorption over a vertical tube using LiCl solution.

Auteurs : LI S. T., YIN Y., LIANG Z., et al.

Type d'article : Article, Article de la RIF

Résumé

To discover the falling film absorption performance over a vertical tube using LiCl solution in a high-pressure absorber involved in a two-stage absorption refrigeration system, an experimental study on heat and mass transfer performance of the absorption process was conducted. Effects of operating parameters such as solution mass flow rate, absorber pressure, concentration and cooling water temperature on absorber performance are analyzed. Besides, a coupled heat and mass transfer model is applied and solved with a finite difference method in order to determine the heat and mass transfer coefficients. Mass absorption rates of absorption processes respectively using LiBr solution and LiCl solution are compared under the conditions of the same temperature and saturated vapor pressure of the solution. Results show that the mass absorption rate using LiCl solution is up to 19.7% higher than LiBr solution. In addition, dimensionless formulations of heat and mass transfer coefficients are correlated with the average absolute error below 15%. The study is also helpful to design and optimize such kind of absorbers using LiCl solution as working fluid.

Documents disponibles

Format PDF

Pages : 109-119

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 study on heat and mass transfer performance of falling film absorption over a vertical tube using LiCl solution.
  • Identifiant de la fiche : 30022754
  • Langues : Anglais
  • Source : International Journal of Refrigeration - Revue Internationale du Froid - vol. 85
  • Date d'édition : 01/2018
  • DOI : http://dx.doi.org/10.1016/j.ijrefrig.2017.09.015

Liens


Voir d'autres articles du même numéro (36)
Voir la source

Indexation