Abstract
The water emulsified fuel consists of base fuel oil and water doped with or without a trace content of emulsifier. It is known that the water emulsified fuel is effective for suppressing NOx and soot emissions. In this study, the water emulsified fuel was produced without addition of any emulsifiers. And the combustion characteristics of heavy oil C and its water emulsified fuel were investigated on a small-scale combustion furnace. To investigate the effect of water content ratio on thermal efficiency and exhaust gas characteristics at the condition of constant excess air ratio. As a result, it is clarified that the optimum water content ratio to reduce NOx and dust emissions as well as to improving the thermal efficiency is about 10%.
