(3.232.129.123) 您好!臺灣時間:2021/02/26 21:53
字體大小: 字級放大   字級縮小   預設字形  
回查詢結果

詳目顯示:::

我願授權國圖
: 
twitterline
研究生:方立凱
研究生(外文):Fang, Li-Kai
論文名稱:漂浮式液滴之蒸發特性實驗
論文名稱(外文):Evaporation characteristics investigations on the floating liquid droplets
指導教授:陳榮洪陳榮洪引用關係
指導教授(外文):Chen, Rong-Horng
學位類別:碩士
校院名稱:南台科技大學
系所名稱:能源工程研究所
學門:環境保護學門
學類:環境資源學類
論文種類:學術論文
論文出版年:2010
畢業學年度:98
語文別:中文
論文頁數:75
中文關鍵詞:液滴蒸發液滴漂浮直徑平方定律
外文關鍵詞:drop evaporationdrop flotationd2-law
相關次數:
  • 被引用被引用:0
  • 點閱點閱:197
  • 評分評分:系統版面圖檔系統版面圖檔系統版面圖檔系統版面圖檔系統版面圖檔
  • 下載下載:6
  • 收藏至我的研究室書目清單書目收藏:0
本研究主要目的發展一套簡易的油滴蒸發實驗裝置,利用一個加熱的錐形孔座,通入熱空氣,藉由熱空氣的支撐使油滴可以穩定蒸發。利用高速攝影機觀察並紀錄油滴隨時間變化的蒸發歷程,實驗中油滴位置穩定,因此觀察及量測皆可精確的進行。本實驗測試燃料包含醇類(甲醇、乙醇),烷類(7烷、8烷、10烷、12烷、16烷),與混合燃料E75(乙醇75%、純水25%)以及純水作為一系列的研究項目。實驗中主要探討燃油液滴在不同受熱環境(450℃、5500C、6000C)下的蒸發熱值並與理論值做比較,理論值採用d2law(液滴直徑平方與時間歷程之線性關係)。重複性實驗結果發現:純物質(醇類、烷類),混合燃料(E75)與純水對於穩定油滴之蒸發速率皆呈線性關係,文中針對既有d2law理論式進行修正,並驗證所研製實驗裝置的可行性。
This study developed a simple and innovative test cell to investigate liquid droplet evaporation characteristics. Hot air, introducing through a heated conical diffuser, floated and evaporated stably the investigated liquid droplet. The video recording equipment included a high-speed video camera and digital camera, and all recorded videos and photos were saved directly to a computer. The target liquids in this experiment were alcohol (methanol and ethanol), alkane (heptane, octane, decane,
dodecane, and hexadecane), blended fuels (E75) and pure water.
In this study, the evaporation rates of floating liquid droplets was experimentally analyzed and compared to the the oretical d2-law values. It is obvious that the target liquid droplets show a linear evaporation rate. A modified d2-law correlation for the liquid droplet evaporation rate was proposed. Feasibility of the established test cell was also approved.
摘要 iv
英文摘要 v
誌謝 vi
目次 vii
表目錄 ix
圖目錄 x
附錄 xii
第一章 緒論 1
1-1 前言 1
1-2文獻回顧 2
1-2-1 多孔性圓球模擬法 2
1-2-2 -液滴懸掛法 2
1-2-3 自由飛行液滴法 3
1-3 研究動機及目的 6
第二章 實驗設備與方法 7
2-1整體實驗設備 7
2-1-1液滴漂浮座 7
2-1-2液滴供應系統 8
2-1-3加熱系統 8
2-1-4供氣系統 9
2-1-5蒸發行為觀測系統 9
2-1-6實驗步驟 10
2-2實驗方法 12
2-2-1直徑平方定律 12
2-2-2實驗用燃料及其理論K值 13
第三章 實驗結果與討論 19
3-1各別燃料之蒸發速率常數k 19
3-1-1醇類燃料 19
3-1-2烷類燃料 20
3-1-3純水及混合燃料 23
3-2修正K值之比較 24
第四章 結論 25
參考文獻 26
符號彙編 29
1.Faeth, G. M.,“Current status of droplet and liquid combustion, ” Prog. Energy Combust. Sci., Vol. 3, pp. 191-224, 1977.
2.Faeth, G. M.,“Spray combustion phenomena, ” Proc. Combust. Inst., Vol. 26, pp.1593-1612, 1996.
3.Law, C. K., “Recent advances in droplet vaporization and combustion,” Prog. Energy Combust. Sci., Vol. 8, pp. 171-201, 1982.
4.Agoston, G. A., Wise, H., and Rosser, W. A., “Dynamic factors affecting the combustion of liquid spheres,” Proc. Combust. Inst., Vol. 6, pp. 708-717, 1957.
5.Gollahalli, S. R., and Brzustowski, T. A.,“Experimental studies on the flame structure in the wake of a burning droplet, ” Proc. Combust. Inst., Vol. 14, pp. 1333-1344, 1973.
6.Tsue, M., Kadota, T., Segawa, D. and Yamasaki, H., “Statistical analysis on onset of microexplosion for an emulsion droplet,” 26th symposium (International) on combustion, The combustion institute, p. 1629, 1996.
7.Segwa, D., Yamasaki, H., Kadota, T., Tanaka, H., Enomoto, H., and Tsue, M “Water-Coalescence in An Oil-in-Water Emulsion Droplet Burning Under Microgravity,” Proceedings of the Combustion Institute, Vol. 28, pp. 985-990, 2000.
8.Ocampo-Barrera, R. and Villasenor, R., “An experimental study of the effect of water content on combustion of heavy fuel oil/water emusion droplets,” Combustion and Flame, Vol. 126, p. 1845, 2001.
9.Yozgatligil, A., Park, S., Chol, M. Y., Kazakov, A. and Dryer, F. L., “Burning and sooting behavior of ethanol droplet combustion under microgravity conditions,” Combust. Sci. and Tech., Vol. 176, p. 1985, 2004.
10.Lasheras, J. C., Fernandez-Pello, A. C. and Dryer, F. L., “Initial observations on the free combustion characteristics of water-in-fuel emulsions,” Combust. Sci. and Tech., Vol. 21, p. 1, 1979.
11.Lasheras, J. C., Fernandez-Pello, A. C., and Dryer, F. L., “Experimental observations on the disruptive combustion of free droplets of multicomponent fuels,” Combust. Sci. Technol., Vol. 22, pp. 195-209, 1980.
12.Wang, C. H., Liu, X. Q. and Law, C. K., “Combustion and Microexplosion of Freely Falling Multicomponent Droplets, ” Combustion and Flame, Vol. 56, pp. 175-197, 1984.
13.Wang, C. H. and Law, C. K., “Microexplosion of Fuel Droplets under High Pressure,” Combustion and Flame, Vol. 59, pp. 53-62, 1985.
14.Wang, C. H. and Chen, J. T., “An Experimental Investigation of the Burning Characteristics of Water-Oil Emulsions, ” Int. Comm. Heat Mass Transfer, Vol. 23, No. 6, pp. 823-834, 1996.
15.Virepinte, J. F., Biscos, Y., Lavergne, G., Magre, P. and Collin, G., “A rectilinear droplet stream in combustion: droplet and gas phase properties,” Combust. Sci. and Tech., Vol. 150, p. 143, 2000.
16.Shaw, B. D., Dwyer, H. A. and Wei, J. B., “Studies on combustion of single and double streams of methanol and methanol/dodecanol droplet,” Combust. Sci. and Tech., Vol. 174, p. 29, 2002.
17.Stry, W. J., Felske, J. D. and Ashgriz, N., “Droplet combustion of chlorinated benzenes, alkanes, and their mixtures in dry atmosphere,” Environmental Engineering Science, Vol. 20, p. 125, 2003
18.Wang, C. H., Hung, W. G., Fu, S. Y., Huang, W. C. and Law, C. K. “On the burning and microexplosion of collision-generated two- compound droplets: miscible fuels,” Combustion and Flame, Vol. 134, p. 289, 2003.
19.Shaw, B. D., Wei, J. B. and Dwyer, H. A., “Influence of a cooled wall on droplet stream combustion,” Combust. Sci. and Tech., Vol. 176, p. 215, 2004.
20.Sazhin, S. S., Abdelghaffar, W. A., Sazhina, E. M. and Heikal, M. R., “Models for droplet transient heating: effects on droplet evaporation, ignition, and break-up,” International Journal of Thermal Sciences, Vol. 44, p. 610, 2005.
21.Law, C. K., and Williams, F. A., “Kinetics and Convection in the Combustion of Alkane Droplets,” Combustion and Flame, Vol. 19, No. 3 pp. 393-406, 1972.
22.Yaws, C. L.,. “Handbook of Transport Property Data,” Gulf Publishing Company, pp.61-81, 1995.
23.Turns, S. R., “An Introduction to combustion ,” Concepts and Applications, second edition, McGraw-Hill, pp.648-654, 2000.
24.Stone, R., “ Introduction to Internal Combustion Engines ,” third edition, Palgrave, p.597, 1999.
25.李冠宗、呂有豐編譯,(內燃機),高立圖書有限公司,頁471, 民國88年
26.Sazhin, S. S., “Advanced models of fuel droplet heating and evaporation,”Progress in Energy and Combustion Science , Vol 32 pp. 162–214, 2006.
27.Wallis, G . B., “One-dimensional two phase flow,” New Youk : McGraw-Hill, 1969.
28.Benim, A . C., Cagan M., “Investigation into the fluid dynamics of a droplet in gas flow,” Computational Fluid and Solid Mechanics : Second MIT Conference, pp 840-842, 2003.
連結至畢業學校之論文網頁點我開啟連結
註: 此連結為研究生畢業學校所提供,不一定有電子全文可供下載,若連結有誤,請點選上方之〝勘誤回報〞功能,我們會盡快修正,謝謝!
QRCODE
 
 
 
 
 
                                                                                                                                                                                                                                                                                                                                                                                                               
第一頁 上一頁 下一頁 最後一頁 top
系統版面圖檔 系統版面圖檔