Effect of Volume Fraction and Temperature on Thermal Conductivity of SiO2 Nanofluids
Thermal conductivities of two kinds of nanofluids (SiO2-water and SiO2-ethylene glycol) were measured by transient hot-wire method at different volume fraction and temperature. Influences of volume fraction of particles and temperature on thermal conductivities of nanofluids were analyzed. The Experimental results show that thermal conductivities of nanofluids are higher than those of base fluids, and increase with the increase of volume fraction and temperature. When approximately 0.5% volume fraction of SiO2 nanoparticles are added into water and ethylene glycol at the temperature 50°C, the thermal conductivities are enhanced 46.2% and 62.8% respectively.
Shiquan Liu and Min Zuo
B. J. Zhu et al., "Effect of Volume Fraction and Temperature on Thermal Conductivity of SiO2 Nanofluids", Advanced Materials Research, Vols. 306-307, pp. 1178-1181, 2011