Ignition of Slurry Fuel Droplets with Different Heating Conditions

Timur Valiullin, Ksenia Vershinina and Pavel Strizhak
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Timur Valiullin: National Research Tomsk Polytechnic University, Tomsk 634050, Russia
Ksenia Vershinina: National Research Tomsk Polytechnic University, Tomsk 634050, Russia
Pavel Strizhak: National Research Tomsk Polytechnic University, Tomsk 634050, Russia

Energies, 2019, vol. 12, issue 23, 1-18

Abstract: This paper describes modern research methods of the ignition and combustion processes of slurry fuel droplets. The experiments were carried out using a muffle furnace to ensure the conditions of radiation heating, the hot surface to reproduce the conditions of conductive heating, the high-temperature channel with convective heating, the chamber with the processes of soaring, i.e., a significant increase in the time of fuel residence in the combustion chamber. We identified the differences in combustion modes, threshold ignition temperatures, delay times and durations of combustion processes. We obtained the quantitative differences in the characteristics of the ignition and combustion processes for typical registration methods. It was found that for all heating schemes, the minimum ignition temperatures have comparable values. Minimum ignition delay times were recorded during convective heating. The maximum combustion temperatures were achieved with radiation heating. We determined the values of limiting heat fluxes, sufficient to initiate the combustion of slurries fuels during conductive, convective and radiative heating.

Keywords: slurry fuel; droplet; particle; heating schemes; ignition; combustion (search for similar items in EconPapers)
JEL-codes: Q Q0 Q4 Q40 Q41 Q42 Q43 Q47 Q48 Q49 (search for similar items in EconPapers)
Date: 2019
References: View references in EconPapers View complete reference list from CitEc
Citations: View citations in EconPapers (1)

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