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Amélioration du transfert de chaleur et de masse pour les nanofluides binaires dans les procédés à absorption par film tombant au LiBr/H2O.

Heat and mass transfer enhancement of binary nanofluids for H2O/LiBr falling film absorption process.

Auteurs : KANG Y. T., KIM H. J., LEE K. I.

Type d'article : Article, Article de la RIF

Résumé

The objectives of this study are to measure the vapour absorption rate and heat transfer rate for falling film flow of binary nanofluids, and to compare the enhancement of heat transfer and mass transfer under the same conditions of nanofluids. The key parameters are the base fluid concentration of LiBr, the concentration of nanoparticles in weight %, and nanoparticle constituents. The binary nanofluids are H2O/LiBr solution with nanoparticles of Fe and carbon nanotubes (CNT) with the concentrations of 0.0, 0.01 and 0.1 wt %. The vapour absorption rate increases with increasing the solution mass flow rate and the concentration of Fe and CNT nanoparticles. It is found that the mass transfer enhancement is much more significant than the heat transfer enhancement in the binary nanofluids with Fe and CNT. It is also found that the mass transfer enhancement from the CNT nanoparticles becomes higher than that from the Fe nanoparticles. Therefore, the CNT is a better candidate than Fe nanoparticles for absorption performance enhancement in H2O/LiBr absorption system.

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Format PDF

Pages : 850-856

Disponible

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    20 €

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    Gratuit

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Détails

  • Titre original : Heat and mass transfer enhancement of binary nanofluids for H2O/LiBr falling film absorption process.
  • Identifiant de la fiche : 2008-1630
  • Langues : Anglais
  • Source : International Journal of Refrigeration - Revue Internationale du Froid - vol. 31 - n. 5
  • Date d'édition : 08/2008

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