RT Journal Article
T1 Thermal conductivity and viscosity measurements of ethylene glycol-based Al2O3 nanofluids
A1 Pastoriza Gallego, María José
A1 Lugo Latas, Luis
A1 Legido Soto, José Luis
A1 Martínez Piñeiro, Manuel
K1 2299 Otras Especialidades Físicas
AB The dispersion and stability of nanofluids obtained by dispersing Al2O3 nanoparticles in ethylene glycol have been analyzed at several concentrations up to 25% in mass fraction. The thermal conductivity and viscosity were experimentally determined at temperatures ranging from 283.15 K to 323.15 K using an apparatus based on the hot-wire method and a rotational viscometer, respectively. It has been found that both thermal conductivity and viscosity increase with the concentration of nanoparticles, whereas when the temperature increases the viscosity diminishes and the thermal conductivity rises. Measured enhancements on thermal conductivity (up to 19%) compare well with literature values when available. New viscosity experimental data yield values more than twice larger than the base fluid. The influence of particle size on viscosity has been also studied, finding large differences that must be taken into account for any practical application. These experimental results were compared with some theoretical models, as those of Maxwell-Hamilton and Crosser for thermal conductivity and Krieger and Dougherty for viscosity.
PB Nanoscale Research Letters
SN 1556276X
YR 2011
FD 2011-03-15
LK http://hdl.handle.net/11093/3358
UL http://hdl.handle.net/11093/3358
LA eng
NO Nanoscale Research Letters, 6, 221 (2011)
NO Ministerio de Educación y Ciencia | Ref. CTQ2006-15537-C02
DS Investigo
RD 11-dic-2024