王興華臺灣大學:機械工程學研究所涂盛展Tu, Sheng-JanSheng-JanTu2010-06-302018-06-282010-06-302018-06-282009U0001-1308200910280900http://ntur.lib.ntu.edu.tw//handle/246246/187149本實驗利用陶瓷纖維將液滴掛於其交點處，在重力場下觀察不同沸點的油料混合後，其液滴的燃燒行為與特性，本實驗所使用的雙組份油料有生質柴油/大豆油、生質柴油/玉米油、生質柴油/葡萄籽油、生質柴油/乙醇。驗結果顯示，生質柴油與大豆油因性質類似，所以產生微爆與火焰縮口的現象不如其他兩種生質油料頻繁；當生質油料與生質柴油之沸點差距不大，則液滴在發生微爆後，仍可繼續維持球對稱燃燒。而乙醇/生質柴油之雙組份油料，則會出現許多不同的現象，其為點火溫度差異性所導致，因乙醇與生質柴油沸點差異極大，所以當發生微爆後，液滴則會炸開破裂，變成許多熄滅的小液滴。Experiments make suspended droplets include binary fuels of different boiling point , and observe characteristics of the combustion. The binary fuel mixtures used in this experiment were biodiesel/soybean oil, biodiesel/corn oil, biodiesel/ grapeseed oil, and biodiesel/ ethanol. his experimental results showed the variation of micro-explosion and flame shrinkage were slight , because the property of biodiesel and soybean oil were similar. After the micro-explosion of droplet , it still keep spherical symmetry on combustion ,when boiling point of bio oil and bio diesel were similar. Biodiesel/ ethanol fuel on different heating temperature will cause varied status , after the micro-explosion of droplet , it will burst and become numerous extinction little droplets , when boiling point of ethanol and bio diesel were different.第一章 緒論..........................................................1 1-1 前言..........................................................1 1-2 文獻回顧......................................................2 1-3 研究動機與目的................................................4二章 基礎理論......................................................5 2-1 點火延遲......................................................5 2-2 液滴微爆及多組份液滴成核理論..................................5 2-3 火焰縮口......................................................6 2-4 碳微粒之形成..................................................7 2-5 多組份液滴之燃燒..............................................8 2-6 燃油分子於氣相中之停留時間(Residence Tim).....................12 2-7 d2 Law........................................................14 2-8 d2 Law對流效應之半實驗性(Semi-empirical)修正..................16三章 實驗設備與方法...............................................18 3-1 實驗方法.....................................................18 3-2 實驗及觀測設備...............................................19 3-2.1 Droplet control System.................................19 3-2.2 Droplet combustion System..............................20 3-2.3 電子控制系統...........................................21 3-2.4 影像處理方法...........................................21 3-3 實驗步驟及資料處理方法.......................................21 3-3.1 實驗步驟...............................................21 3-3.2 資料處理方法...........................................22 3-4 實驗之誤差分析...............................................22 3-4.1 Pixel量測誤差.........................................22 3-4.2 圖片時間間距之誤差.....................................22四章 結果與討論...................................................23 4-1 實驗工作條件.................................................23 4-2 生質柴油之燃燒現象觀察.......................................23 4-3 大豆油與生質柴油之燃燒現象觀察...............................23 4-4 玉米油與生質柴油之燃燒現象觀察...............................24 4-5 葡萄籽油與生質柴油之燃燒現象觀察.............................24 4-6 乙醇與生質柴油之燃燒現象觀察.................................25五章 結論與建議...................................................27 5-1 結論.........................................................27考文獻............................................................2829255954 bytesapplication/pdfen-US液滴燃燒微爆火焰縮口DropletCombustionMicro-explosionFlame shrinkagethesishttp://ntur.lib.ntu.edu.tw/bitstream/246246/187149/1/ntu-98-R96522113-1.pdf