<div class="section abstract"><div class="htmlview paragraph">The research introduces the thermal properties of silicon dioxide
(SiO<sub>2</sub>) nanofluids and the promising application of these fluids
in hybrid vehicle cooling systems. How to make fluids is simply to disperse a
50-50 mixture of both Ethylene Glycol and Water; into this solution add
SiO<sub>2</sub> nanoparticles concentration ranges from 0.1% up to 0.5%
volume according desired properties or material characteristics etc. When
viscosities and thermal conductivities of nanofluid were measured over the
temperature range from 25 to 120 °C using Brookfield viscometer and transient
hot-wire method; results were as follows: Viscosity of SiO<sub>2</sub>
nanofluids at 120°C higher concentrations 0.5%, more viscous fluids, thermal
conductivity also rose with results, although there was a plateau at around 40%
increase compared to that of water-based slurries. At 0.5% concentration,
thermal conductivity increased by up to 20% at 120 °C, compared with the value
of pure ethylene glycol. These results suggest that SiO<sub>2</sub> nanofluids
can be used to improve heat transport for hybrid vehicle cooling systems and,
importantly, they provide a compromise between higher thermal conductivities
(although not so great as pure water or silver sloan) and manageable viscosity
increases.</div></div>