Abstract
This experimental study investigated the effects of nanoparticles on evaporation rate of kerosene based nanofluid fuels in high pressure environment. The base liquid fuel was kerosene and aluminium (Al) nanoparticles with average 70 nm diameter were used. Evaporation behaviour was recorded and investigated by suspending the droplet on the silicon carbide (SiC) fiber with 0.1 mm diameter in high pressure chamber. Oleic acid was used as a surfactant to synthesize the stable nanofluid fuels and the effect of oleic acid, of course, was investigated for comparison. The concentrations of aluminium nanoparticles were 0.1 % and 1.0 % by mass fraction and the ambient pressure was increased from 0.1 MPa to 2.5 MPa. The temperature raged 300 ℃ to 700 ℃. The results showed that in high temperature region the pure kerosene droplet vaporized faster with pressure increase but in low temperature region the evaporation rate of pure kerosene droplet decreased with pressure increase. For all aluminium‐ kerosene nanofluid fuel droplets, regardless of the concentration, the evaporation rate was higher than that of pure kerosene droplets.
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