The effect of tungsten trioxide nanoparticles on the thermal conductivity of ethylene glycol under different sonication durations: An experimental examination.

Incorporation of tungsten trioxide (WO 3) nanoparticles into ethylene glycol (EG) was performed to examine the nanoparticles presence on thermal conductivity behavior. To explore the mass fraction and temperature efficacy on the amount of thermal conductivity enhancement, many samples were produced at 0.005, 0.01, 0.05, 0.1, 0.5, 1,5 wt% and conductivity measurements were performed at 5–65 °C. Stable samples were exposed to sonic waves for 15, 30, 45 and 60 min to inspect the thermal conductivity dependency on the sonication duration. Thermal conductivity improvement of EG was observed in all cases due to the presence of WO 3 nanoparticles. Based on experiments, the best thermal conductivity enhancement has reached up to 32.38%. The rate of thermal conductivity enhancement was higher at low mass fractions. Temperature rising was found to amplify the positive nanoparticles efficacy. Eventually thermal conductivity improvements due to enlarged sonication time were reported up to 4%. Unlabelled Image • Checking the stability using DLS and zeta potential tests. • Sonication duration effect on thermal conductivity of tungsten trioxide/EG nanofluid. • The higher the temperature, the greater impact of the WO 3 presence on TC. • The best thermal conductivity enhancement has reached up to 32.38%. • Improvements in thermal conductivity due to enlarged sonication time are below 4%. [ABSTRACT FROM AUTHOR]