▎ 摘　　要

The thermal characteristics of produced graphene oxide (GO)-distilled water (DW) nanofluids are investigated experimentally. Graphene oxide nanofluids were made by dispersing graphene oxide nanoparticles in distilled water, stirring with a magnetic stirrer and sonicating with an ultrasonic instrument, which is known as the two-step nanofluids synthesis technique. Graphene oxide nanofluids of 0.0125, 0.025 and 0.0375 wt% concentrations were prepared, and thermal properties of these nanofluids were tested using TPS 2200 thermal constant analyser at temperatures changing from 10 to 60 degrees C in steps of 10. This study tells that maximum percentage increment of 14% and 31% at 60 degrees C was observed in thermal conductivity (TC) and thermal diffusivity (TD) of graphene oxide nanofluids correspondingly although specific heat (SH) of GO nanofluid was declined with highest 33% at 60 degrees C with concentration varying from 0.0125 to 0.0375 wt%. Our results show that an increase in nanoparticle loading at a fixed temperature improves TC and TD while lowering SH. According to the observations, at a given concentration, increase in temperature results in higher values for thermal conductivity and thermal diffusivity but lower values for specific heat.