CHAPTER 8: CONCLUSIONS AND FUTURE WORK
8.3 Future Work
In almost all of these research efforts, the nanoparticles were injected by suspending the particles in air and released into the ethanol flame, the particles were not directly mixed with ethanol. To use the combined fuel of liquid and energetic nanoparticles as practical fuel, the particles need to be directly mixed into the liquid fuel. There are several issues which may arise when directly mixing particles into liquid fuel and use as practical energy source. To address those issues, followings can be recommended as future research efforts.
Study the dispersion stability of boron and/or boron-metal composite particles in ethanol (or any other liquid fuels of interest). Different surfactants can be explored to add to this combined fuel for better dispersion stability.
Even after the suitable surfactant is selected, it is important to understand the effects of surfactant on the ignition/combustion behavior of the combined fuel
One initial test was conducted to see the spray of the boron-loaded ethanol with a pressure-orifice atomizer (0.5 mm orifice size). Within a lower % of particle loading (<5%), no visible clogging was seen in the atomizers. For higher loadings (~10%), there was a change in spray pattern visible. However, these tests were rudimentary. A detailed study can be planned to understand the atomization and spray characteristics of liquid fuels loaded with boron nanoparticles (with or without surfactants).
169
Study the spray combustion of the combined fuels of liquid and energetic nanoparticles. This study may provide useful information for high-speed airbreathing applications.
170
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