Abstract
Experiments have been conducted to examine on how the combustion behavior of co-axial diffusion flame and boilers are influenced by the discharge of electro-magnetic energy at a given wave number. The fuel used for the study is town gas. The combustion characteristics for co-axial diffusion flame in electro-magnetic field are observed by taking the direct photographs with high-speed digital video camera and the rate of temperature rise in water container is examined as a function of air-fuel ratio. The average flame temperature is measured by two-color pyrometer. The main results obtained for the study are as follows: that (1) the discharge of the electro-magnetic energy into hydrocarbon fuel combustion is very effective to increase the flame temperature, (2) the rate of temperature rise is about 3〜6% at 1.68 of excess air-ratio, though these values decrease with decreasing excess-air ratio due to much soot generation and (3) for demonstration test of boiler the values of energy saving rate is more than 3%
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