Nanoscience and Nanotechnology
p-ISSN: 22163-257X e-ISSN: 2163-2588
2012; 2(4): 129-133
doi: 10.5923/j.nn.20120204.07
Giulio Solero
Politecnico di Milano, Department of Energy , via Lambruschini, 4 – Milano
Correspondence to: Giulio Solero , Politecnico di Milano, Department of Energy , via Lambruschini, 4 – Milano.
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Recent experimental studies report that addition of nanoparticles (tipically metal oxides nanopowders, such as Al2O3) can somehow modify the ignition mechanism of liquid fuels, probably influencing and accelerating the thermal exchange process between the fuel droplets and the surrounding air.In this paper it has been experimentally analised a stationary Diesel spray, produced by a gas assisted atomizer, preliminarily comparing the behaviour of the flame generated using the unseeded fuel with that one of the same fuel additivated with Al2O3 nanoparticles. Results obtained through light emission analysis are encouraging, in the sense that the presence of a small nano-additive quantity (0.1% in volume) seems to produce effects similar to a shift towards higher flame ventilation, with a possible positive consequence upon combustion stability and efficiency.
Keywords: Nano-Additives, Diesel Spray, Combustion
![]() | Figure 1. The experimental set-up |
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![]() | Figure 2. A comparison of the counter mean diameter (CMD) for water and n-hexane spray at 5 mm from the exit nozzle - B) radial profile of the CMD for the water spray at 50 mm from the exit nozzle |
![]() | Figure 3. images of the spray flame as a function of atomising air flow rate |
![]() | Figure 4. Radial temperature profiles of the premixed flame |
![]() | Figure 5. Comparison of flame emission (band-pass filter at 597±30 nm) |
![]() | Figure 6. Comparison of CO emission in the burned gases |