Thermo-physical properties of engineered dispersions of nano-sand in propylene glycol

摘要: Abstract Stable sand–propylene glycol nanofluids were formulated by dispersing sand nanoparticles (20–25 nm) produced stirred bead milling, in propylene through extended probe ultrasonication. The viscosity of decreases with nanoparticle concentration (0–2 vol%) and temperature (29–140 °C). In the well-dispersed nano-sand–propylene dispersion, interactions between nanoparticles’ surface led to disturbance hydrogen bonding network glycol. This is manifested as reduction dispersion comparison pure For instance, 2 vol% nanofluid was found be 46% lower than that at 29 °C. study influence (10–50 °C) on thermal conductivity reveals linear increase concentration. Higher enhancement temperatures (46.2% for 10 °C) role ordered liquid layers toward dispersion.