Abstract
Water-based nanofluids were prepared by dispersing graphene oxide (GO) nanoparticles in distilled water (DW) followed by magnetic stirring and ultrasonication to get homogeneous and stable suspensions. Nanoparticles were characterized through Field Emission Scanning Electron Microscopy (FESEM) and X-ray diffraction (XRD). Three samples of 100 ml were prepared at a particle loading of 0.03, 0.1, and 0.3% by weight (wt.%). The thermal conductivity of each sample was measured at 30, 45, and 60 °C temperatures, to study the effect of particle loading and temperature. The results showed that enhancement in thermal conductivity varied from 11.3 to 50.5%. The maximum enhancement of 50.5% in thermal conductivity was found at 60 °C in the case of nanofluid with particle loading of 0.3 wt%. An equation is proposed for thermal conductivity which shows the linear relationship with both particle loading and temperature.
Published Version
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