| Summary: | 碩士 === 崑山科技大學 === 機械工程研究所 === 97 === An experimental system for observing drop heating and
microexplosion was established. The emulsion drops consisted of either No. 6 heavy oil or N-hexadecane with various water contents. The heating process was recorded by a high-speed video camera while the ambient and drop temperature were measured by a thermocouple. Three
ambient temperatures, six water contents, and two drop sizes were adopted to investigate the micro-explosion phenomenon. The results showed that the waiting time for the onset of micro-explosion is longer for a larger drop. With the increase of water content, the temperature
range for micro-explosion reduced. In addition, micro-explosion time and temperature decreased with increasing ambient temperature.
Low-sulfur emulsion fuel was also tested in an industrial furnace simulator facility. Although the heating power reduced about 2.7% due to the water content in the fuel, the fuel flow rate was reduced by 12% .Emissions were significantly improved. NOX was lowered by about
78ppm (27%). Therefore, using low-sulfur emulsion fuel can improve fuel economy and decrease pollutants emissions.
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