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Caractéristiques de stabilité et de conductivité thermique des nanofluides (H2O / CH3OH + NaCl + nanoparticules de Al2O3) pour une application d'absorption de CO2.

Stability and thermal conductivity characteristics of nanofluids (H2O/CH3OH + NaCl + Al2O3 nanoparticles) for CO2 absorption application.

Numéro : pap. 2161

Auteurs : PANG C., KANG Y. T.

Résumé

In this study, the nanofluids are produced by dispersing Al2O3 nanoparticles in the H2O/CH3OH binary mixtures using an ultrasonic equipment. Solid Sodium Chlorides (NaCl) with a fixed mass fraction are dissolved in the binary mixture for CO2 absorption. The main objective of this paper is to measure the thermal conductivity of the Al2O3 nanofluids using the transient hot-wire method. The experimental uncertainties in repeatability are obtained as 1.95% for DI water and 1.34% for pure methanol, respectively. The results show that the dispersed nanoparticles can always enhance the thermal conductivity of the basefluid and the highest enhancement is observed to be 6.3% in the concentration of 0.1vol% of Al2O3 nanoparticles, 40vol% of CH3OH and 10wt% of NaCl at 293.15 K. In addition, the zeta potential, visualization and Tyndall effect are investigated to discuss the stability of the present nanofluids.

Documents disponibles

Format PDF

Pages : 7 p.

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 : Stability and thermal conductivity characteristics of nanofluids (H2O/CH3OH + NaCl + Al2O3 nanoparticles) for CO2 absorption application.
  • Identifiant de la fiche : 30006451
  • Langues : Anglais
  • Source : 2012 Purdue Conferences. 14th International Refrigeration and Air-Conditioning Conference at Purdue.
  • Date d'édition : 16/07/2012

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