An experimental investigation on water-based nanofluids containing iron oxide (Fe2O3) in concentrations ranging between 5\r\nand 20% in mass is presented. The purpose of this study is to measure thermal conductivity and dynamic viscosity of these\r\nfluids, as a starting point to study the heat transfer capability. The stability of the nanofluids was verified by pH and Zeta\r\npotential measurements. A dynamic light scattering (DLS) technique was used to obtain the mean nanoparticle diameters. It was\r\nfound that thermal conductivity of these nanofluids improved with temperature and particles concentration. The temperature\r\nand nanoparticle concentration effects on viscosity were analyzed, obtaining a significant increase with respect to water. All the\r\nfluids exhibited a Newtonian behaviour. The experimental values were compared with some theoretical models for both thermal\r\nconductivity and dynamic viscosity.
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