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Sirvi Autor "Erelt, Richard" järgi

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    Assessment of Nanoparticles-Based Additives in Jet-Fuels Combustion
    (Eesti Maaülikool, 2024) Erelt, Richard; Rauwel, Erwan (advisor); Küünal, Siim (advisor); Unt, Karl-Eerik (juhendaja)
    The world is shifting from fossil fuels to electricity to reduce carbon emissions, but jet fuel remains essential for aviation due to its high energy density and lack of viable electric alternatives for long flights. Adding nanoparticles to jet fuel offers a promising way to reduce emissions by enhancing combustion efficiency, decreasing carbon footprint of air freight, and reducing the release of harmful exhaust gases. In this study, five syntheses were performed using a green synthesis approach, with sunflower seeds used as a precursor due to their high oil content, facilitating homogeneous dispersion of nanoparticles within the jet fuel. Physical and chemical tests were performed on the Jet A-1 and Jet A-1 nanofuel, including distillation characteristics, flash point, and density analysis. Engine tests were then conducted to measure various parameters such as airspeed, temperature, pressure, and exhaust emissions. The results showed improved engine performance metrics with ZnO nanoparticles, including increased airspeeds, temperatures, and pressures. However, this enhancement was accompanied by slightly higher emissions of CO, CO2, hydrocarbons, and NOx that could originate from the way of synthesis itself. These findings contrasted with literature, highlighting the need for further research to understand the varying effects of nanoparticle incorporation in different engine configurations and operating conditions. Future research should focus on improving nanoparticle synthesis, stability, and concentration optimization, alongside investigating their long-term effects on fuel filters and emissions reduction strategies.