Abstract
In this study, the effect of surfactants on the combustion of boron nanofuel was experimentally observed. 1-butanol was chosen as the base fuel, and 70 nm boron nanoparticles were combined with two surfactants, Span 80 and oleic acid, to create the nanofuel. Experiments including single droplet combustion and heating value measurements were conducted, and optical and spectroscopical data were obtained to quantitatively evaluate the effects of the surfactants on boron combustion. The results showed that the addition of surfactants was essential for boron combustion by inducing puffing and atomization. The puffing intensity was stronger with Span 80 than with oleic acid, leading to more active boron combustion and a shorter droplet lifetime overall. An increase in boron concentration enhanced both puffing and boron combustion when surfactants were present. The addition of boron nanoparticles increased the heating value of the nanofuel compared to the base fuel. However, while the inclusion of oleic acid slightly rose the heating value of nanofuel, the addition of Span 80 decreased the heating value of nanofuel.
Published Version
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