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研究生:莊明鑫
研究生(外文):Ming Hsin Chuang
論文名稱:氫混合燃料之火焰傳播與燃燒特性分析
論文名稱(外文):The Study on Flame Propagation and Combustion Characteristics of Hydrogen Blended Fuels
指導教授:石心怡
指導教授(外文):H. Y. Shih
學位類別:碩士
校院名稱:長庚大學
系所名稱:機械工程研究所
學門:工程學門
學類:機械工程學類
論文種類:學術論文
論文出版年:2009
畢業學年度:97
論文頁數:107
中文關鍵詞:氫混合燃料氫能燃燒層流火焰傳播速度
外文關鍵詞:Hydrogen blendsHydrogen combustionLaminar flame speed
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本研究針對三種氫混合燃料:天然氣與氫氣、丙烷與氫氣、一氧化碳與氫氣,以一維自由傳播預混火焰架構,搭配詳細化學反應與熱力輸送性質的計算模型來進行燃燒特性分析。探討混合燃料種類、當量比、含氫量、添加稀釋氣體(CO2, H2O, N2)及初始溫度與環境壓力等對預混火焰之火焰傳播速度、火焰溫度及排放廢氣含量的影響。研究結果顯示,氫混合燃料之火焰傳播速度隨著含氫量增加而增加,並以一氧化碳與氫氣混合燃料之火焰傳播速度增加最為明顯;此外,氫混合燃料之火焰傳播速度亦隨著添加稀釋氣體含量增加而減少,以一氧化碳與氫氣之火焰傳播速度減少最多,其中以二氧化碳為稀釋氣體之影響最大,同時,添加稀釋氣體會降低其排放氮氧化物含量;改變氫混合燃料之初始溫度及環境壓力會影響化學反應,因此,氫混合燃料之火焰傳播速度隨著初始溫度增加而增加,以一氧化碳與氫氣之火焰傳播速度增加最明顯,且排放二氧化碳含量隨著初始溫度增加而減少,但氫混合燃料之火焰傳播速度隨著環境壓力增加而減少,以天然氣與氫氣之火焰傳播速度減少最明顯,而排放廢氣含量亦隨環境壓力增加而增加。
This study is aimed at the laminar flame speed and combustion characteristics of hydrogen blended fuels such as hydrogen-natural gas (methane), hydrogen-primary reference fuels (propane), and synthesis gases (hydrogen-carbon monoxide). The laminar flame speeds of the blended fuels are computed and compared with a model of 1-D free-propagation premixed flames, which is analyzed theoretically with detailed chemical kinetics and thermal and transport properties. The effects of the mixture equivalence ratio, the amount of hydrogen and dilution gases (CO2, H2O, N2) are discussed at various atmospheric pressure and mixture temperature. The results showed that the laminar flame speeds of hydrogen blended fuels are increasing with increasing hydrogen percentage, and the synthesis gases mixtures (H2-CO) are affected the most. Besides, the maximum flame temperature of synthesis gases mixtures and the amount of exhaust gases (CO, CO2, NOX) are decreasing with increasing hydrogen percentage. The effects of dilution gases added in hydrogen blended fuels showed the laminar flame speeds are decreasing most with CO2 dilution, and least with N2 dilution. The laminar flame speeds of hydrogen blended fuels and the amount of exhaust nitrogen oxide are increased at higher temperature. However, at higher atmospheric pressure, the laminar flame speeds of hydrogen blended fuels are decreased, especially for hydrogen-natural gas (methane) mixture, but the amount of exhaust nitrogen oxide are increased.
目錄
指導教授推薦書
口試委員審定書
授權書 iii
誌謝 iv
中文摘要 v
英文摘要 vi
目錄 vii
圖目錄 x
表目錄 xiv
符號對照表 xv
第一章 緒論 1
1.1 研究背景 1
1.2 文獻回顧 5
1.2.1 氫氣與天然氣混合燃料 6
1.2.2 氫氣與基本參考燃料 8
1.2.3 含氫合成氣體 9
1.3 研究目標 10
第二章 理論方法 11
2.1 火焰架構 11
2.2 統御方程式 15
2.3 擴散速度與化學反應機制 17
2.3.1 擴散速
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[2] Schneider, M., Froggatt, A., The world nuclear industry status report 2004, World Nuclear Association, 2004.
[3] Aebischer, B., Giovannini, B., Pain, D., Scientific and technical arguments for the optimal use of energy, International Energy Agency, 1989.
[4] 經濟部能源局-再生能源網站, http://re.org.tw/Pro/re-pro.html
[5] Crabtree, G.. W., Dresselhaus, M. S., Buchanan, M. V., “The hydrogen economy,” Physics Today, 57, pp. 39-45, 2004.
[6] National Hydrogen Vision Meeting, U.S. Department of Energy, Washington, DC, Nov. 15-16, 2001.
[7] Hoffmann, P., Tomorrow’s Energy: Hydrogen, Fuel Cells, and the Prospects for a Cleaner Planet, Cambridge University Press : MIT Press, New York, 2001.
[8] White, C. M., Steeper, R. R., Lutz, A. E., “The hydrogen-fueled internal combustion engine: a technical review,” International Journal of Hydrogen Energy, 31, pp.1292-1305, 2006.
[9] Hythane is a registered trademark of Hydrogen Consultants Inc.
[10] Yu, G., Law, C. K., Wu, C. K., “Laminar flame speeds of methane-air mixtures with hydrogen addition,” Combustion and Flame, 63, pp. 339-347, 1986.
[11] Law, C. K., Kwon, O. C., “Effects of hydrocarbon substitution on atmospheric hydrogen-air flame propagation,” International Journal of Hydrogen Energy, 29, pp. 867-879, 2004.
[12] Ilbas, M., et al., “Laminar burning velocities of hydrogen-air and hydrogen-methane-air mixtures: an experimental study,” Internatio
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