Combustion and Reformulation Enhancement Characteristics of Plasma-Assisted Spray Combustion by Microwave-Induced Non-Equilibrium Plasma

Abstract

To develop a non-equilibrium plasma-assisted combustion method using microwave, we have performed the experiment of spray combustion by the superposition of non-equilibrium plasma using microwave and investigated the characteristics of combustion and reformation of plasma-assisted combustion. Various radicals generate under the superposition of non-equilibrium plasma using microwave and increase with increasing the microwave input power. The emission intensity of O radicals indicates an approximately constant value, and the emission intensity of Hα radicals increases with decreasing the oxygen ratio. Because the feed rate of oxygen is a constant and the oxygen ratio is decreased by increasing the fuel feed rate in this experiments. The emission intensity of OH radicals gradually increases with decreasing the oxygen ratio, because the formulation of OH radicals is affected by O radicals and Hα radicals. According to an increase of various radicals, the combustion reaction is promoted under the oxygen ratio...