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Effet du chlorure de 1,3-diméthylimidazolium sur la solubilité du bromure de lithium dans l'eau pour le froid à absorption et les pompes à chaleur.

Influence of 1,3-dimethylimidazolium chloride on the solubility of lithium bromide in water for absorption refrigeration and heat pumps.

Numéro : 156

Auteurs : LATORRE D., SALAVERA D., LARRECHI M. S., CORONAS A.

Résumé

The effect of the 1,3-dimethylimidazolium chloride ([Dmim][Cl]) on the solubility of lithium bromide (LiBr) in water is analyzed. The solubility curve of ternary water/(LiBr+[Dmim][ Cl]), with 3 % and 6 % of [Dmim][Cl] in the absorbent, has been determined using a visual- polythermal method in the range from (0 to 90) ºC. To explain the role of the ionic liquid in the solubility of the LiBr, a multivariant curve resolution method was applied to near-infrared spectra of the ternary solutions and H2O/LiBr at room temperature within a wide composition range. The solubility results show that, in the range from 0.60 to 0.65 in absorbent mass faction, corresponding to the typical composition in the absorber inlet, the temperature decrease between 11 ºC and 13 ºC with 3 % of IL, and between 15 ºC and 20 ºC with 6 % of IL. Spectral calculation results show that in the ternary mixture, the amount of water that remains as bulk water in the presence of LiBr is higher than in the binary mixture. This suggests interactions between both species.

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Format PDF

Pages : 5

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 : Influence of 1,3-dimethylimidazolium chloride on the solubility of lithium bromide in water for absorption refrigeration and heat pumps.
  • Identifiant de la fiche : 30030530
  • 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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