Water-Based Fe2O3 Nanofluid Characterization: Thermal Conductivity and Viscosity Measurements and Correlation. (22nd December 2011)

• Record Type: Journal Article
• Authors: Colla, L.; Fedele, L.; Scattolini, M.; Bobbo, S.
• Other Names: Manca Oronzio Academic Editor.
• Is Part Of: Advances in mechanical engineering. Volume 2012(2012)
• Publication Date: 2011-12-22
• Subjects: Mechanical engineering -- Periodicals; 621.05
• DOI: 10.1155/2012/674947
• Languages: English
• ISSNs: 1687-8132

Abstract

Abstract : An experimental investigation on water-based nanofluids containing iron oxide (Fe2 O3 ) in concentrations ranging between 5 and 20% in mass is presented. The purpose of this study is to measure thermal conductivity and dynamic viscosity of these fluids, as a starting point to study the heat transfer capability. The stability of the nanofluids was verified by pH and Zeta potential measurements. A dynamic light scattering (DLS) technique was used to obtain the mean nanoparticle diameters. It was found that thermal conductivity of these nanofluids improved with temperature and particles concentration. The temperature and nanoparticle concentration effects on viscosity were analyzed, obtaining a significant increase with respect to water. All the fluids exhibited a Newtonian behaviour. The experimental values were compared with some theoretical models for both thermal conductivity and dynamic viscosity.