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Estimation de la chaleur différentielle de dilution pour une solution aqueuse de (bromure, iodure, nitrate, chlorure) de lithium et une solution aqueuse de nitrate de (lithium, potassium, sodium) utilisées dans les systèmes de refroidissement à absorption.

Estimation of differential heat of dilution for aqueous lithium (bromide, iodide, nitrate, chloride) solution and aqueous (lithium, potassium, sodium) nitrate solution used in absorption cooling systems.

Auteurs : ASFAND F., BOUROUIS M.

Type d'article : Article, Article de la RIF

Résumé

The differential heat of dilution data are estimated theoretically using Duhring's diagrams for water/LiBr, water/(LiBr?+?LiI?+?LiNO3?+?LiCl) with mass compositions in salts of 60.16%, 9.55%, 18.54% and 11.75%, respectively, and water/(LiNO3?+?KNO3?+?NaNO3) with mass compositions in salts of 53%, 28% and 19%, respectively, as these can be potentially utilized as working fluids in absorption cooling systems. The differential heat of dilution data obtained were correlated with simple polynomial equations for the three working fluids as a function of the solution concentration and temperature. The results showed that the differential heat of dilution of the non-conventional working fluid mixtures is lower than that of water/LiBr at typical operating temperature and concentration of interest in absorption cooling cycles employing these working fluid mixtures. The correlations developed could be useful in predicting the differential heat of dilution value while performing heat and mass transfer analyses of these potential non-conventional working fluid mixtures in absorption cooling systems.

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Pages : 18-25

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Détails

  • Titre original : Estimation of differential heat of dilution for aqueous lithium (bromide, iodide, nitrate, chloride) solution and aqueous (lithium, potassium, sodium) nitrate solution used in absorption cooling systems.
  • Identifiant de la fiche : 30019420
  • Langues : Anglais
  • Source : International Journal of Refrigeration - Revue Internationale du Froid - vol. 71
  • Date d'édition : 11/2016

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