本研究經由震盪方式，產製出柴油、十二烷單質液滴與水-十二烷單核複合液滴，以自由飛行的方式，進入熱環境中，藉以研究單質液滴與複合液滴受熱燃燒現象。本研究設計建立一套直立的燃燒系統，藉由甲烷、氧氣與空氣的預混火焰，形成一個穩定的平面火焰，作為高溫熱環境的熱源，以進行實驗研究。
研究中發現，單質液滴的蒸發率會隨著高溫環境中含氧量的增加而增大，複合液滴的蒸發率則不會隨著含氧量的增加而改變。複合液滴因為內核水的影響，其蒸發率小於單質液滴，但複合液滴內水量的增減影響蒸發率並不明顯。燃燒特性的研究中，在單質液滴部分，火焰長度會隨著環境中含氧量的增加而增長；在複合液滴部分，火焰因為外層油膜蒸發完畢，無法持續地提供燃料蒸氣而熄滅。油膜蒸發完畢，水滴暴露在高溫環境後，研究觀察發現蒸發率有增加的趨勢。

In this research, a single-phase drop stream (diesel, dodecane) and a water-in-dodecane compound drop stream were produced by utilizing of a piezoelectric drop generator. These drop streams entered a high temperature environment and burned as freely falling drops. For the purpose of providing a heat source of high temperature environment, a vertical combustion chamber was built, which was maintained by a steady flat premixed flame. The behavior of drop stream and the combustion phenomenon of single-phase and compound drop streams were observed.
In the research, the evaporation rate of a single-phase drop would increases with the oxygen content in the high temperature environment. However, the evaporation rate of a compound drop would not change with the oxygen content. The evaporation rate of compound drop was smaller than that of a single-phase drop because of the water core influence. But the varying of the quantity of water inside the compound drop would not influence the evaporation. In the combustion characteristic research of the single-phase drop, the flame length would increase with the increasing oxygen content. For the compound drop, the flame would go out because the outer layer oil film was consumed by evaporation and no fuel vapor was available. After the oil film was exhausted and the water drop was exposed to the high temperature environment, the evaporation rate showed an increasing trend.

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