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Viscosity and thermal conductivity measurements of water-based nanofluids containing titanium oxide nanoparticles.

Author(s) : FEDELE L., COLLA L., BOBBO S.

Type of article: Article, IJR article

Summary

Nanofluids, i.e. suspensions of nanoparticles in liquids, seem to be very promising as thermal vectors in systems where secondary fluids are applied. Here, the characterisation of water-based nanofluids containing titanium oxide (TiO2) in concentrations ranging between 1 and 35% in mass is presented. First of all, the mean nanoparticle diameters are studied by dynamic light scattering (DLS) technique and the nanofluid stability is analysed by Zeta potential measurements. Then, the behaviour of viscosity as a function of composition and temperature is evaluated by means of a rheometer, in the temperature range between 283 and 343 K. Furthermore, the thermal conductivity of these nanofluids is measured, in order to understand its possible enhancement as a function of temperature and nanoparticle concentration.

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Pages: 1359-1366

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Details

  • Original title: Viscosity and thermal conductivity measurements of water-based nanofluids containing titanium oxide nanoparticles.
  • Record ID : 30004387
  • Languages: English
  • Source: International Journal of Refrigeration - Revue Internationale du Froid - vol. 35 - n. 5
  • Publication date: 2012/08

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