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研究生: 林韋辰
Lin, Wel-Chen
論文名稱: 氫/空氣層流預混氣流於平行絕熱催化性白金壁面之實驗
Experiments on Laminar Premixed Hydrogen/Air Flow over Parallel Adiabatic Catalytic Platinum Walls
指導教授: 王訓忠博士
Dr. Wong, Shwin-Chung
口試委員:
學位類別: 碩士
Master
系所名稱: 工學院 - 動力機械工程學系
Department of Power Mechanical Engineering
論文出版年: 2004
畢業學年度: 92
語文別: 中文
論文頁數: 36
中文關鍵詞: 氫氣白金觸媒燃燒催化性壁面催化性側壁
外文關鍵詞: catalytic combustion, hydrogen, Pt, platinum, catalytic wall
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  • 本文對於氫/空氣預混層流燃氣與白金催化近似絕熱側壁之反應進行研究。白金催化性側壁為兩個平行相距1cm的電鍍白金鈦板,在兩平行板所圍成的區間兩側,用石英板隔絕外界空氣的影響並方便觀察。之後通入不同當量比(Φ=1.0、0.5、0.35、0.15)、進口流速(uin=0.2、0.27、0.43、0.59 m/s)等不同條件的預混燃氣,待其反應建立穩定的溫度場後,利用S-type的熱電偶量取燃氣流場及板面的溫度分佈。結果發現,白金對氫氣預混燃氣的催化效應在常溫常壓下就可進行,並且在相同的燃氣進口流速下,當量比越高則壁面及流場溫度分佈會越高;在相同的當量比時,燃氣的進口速度越快時溫度分佈較高;若以相同的氫氣體積流量來看,則整體燃氣流速慢(即當量比高)時溫度分佈較高。另外在低當量比時(Φ=0.15),不管進口流速如何,平均壁溫會較低,且壁溫會沿燃氣流向緩緩增加,而較高當量比時(Φ=1.0),平均壁溫較高,但壁溫也會沿燃氣流向增加,兩者原因有所不同,其詳細說明如內文所示。
    另外當量比在0.35和0.5時,壁溫卻是在進口約10mm處最高,較下游部分的壁溫便會緩緩下降,這結果與文獻所提之結果相似。若比較不同燃氣條件的結果發現,對於氫氣之壁面催化反應當量點可能在燃氣當量比介於0.35和0.5之間,此結果與文獻中所提的表面反應當量點在Φ∼4之結果相符。


    圖表目錄 ii 第一章 緒論 1 1.1 前言………………………………………… 1 1.2 文獻回顧…………………………………… 4 1.3 研究目的…………………………………… 8 第二章 實驗方法 10 2.1 實驗設備…………………………………… 10 2.2 實驗方法…………………………………… 12 第三章 結果與討論 14 3.1 壁面溫度…………………………………… 15 3.2 流場溫度…………………………………… 18 第四章 結論與未來工作 20 4.1 結論………………………………………… 20 4.2 未來工作…………………………………… 21 參考文獻 23

    [1] Hayes, R.E. and Kolaczkowski, S.T., “Introduction to catalytic combustion,” Text Book Gordon & Breach Science Publishers 681 pp ISBN: 90-5699-092-6, (1997)
    [2] Davy, H., “Some New Experiments and Observations on The Combustion of Gaseous Mixtures,” The Collected Works of Sir Humphrey Davy (J. Davy Ed.), Vol.Ⅵ, Smith, Elder and Co. Cornhill London, (1840).
    [3] 趙怡欽, 許紘瑋, “觸媒燃燒”, 燃燒季刊38期Vol.11 No.2 Page12-30(2002).
    [4] Pfefferle, W. C. and Pfefferle, L. D.,“Catalytically Stabilized Combustion,”Prog. Energy Combust. Sci., Vol.12, pp.25-41 (1986).
    [5] Arai, H., and Machida, M., “Recent Progress in High-Temperature Catalytic Combustion,” Catalysis Today 10 pp.81-94 (1991).
    [6] Schefer, R. W., Robben, F., and Cheng, R. K., “Catalyzed Combustion of H2/Air Mixtures in a Flat-Plate Boundary Layer:ⅠExperimental Results,” Combustion and Flame 38:51-63 (1980).
    [7] Schefer, R. W., “Catalyzed Combustion of H2/Air Mixtures in a Flat-Plate Boundary Layer:ⅡNumerical Model,” Combustion and Flame 45:171-190 (1982).
    [8] Brown, N. J., Schefer, R. W. and Robben, F., “High-Temperature Oxidation of H2 on a Platinum Catalyst,” Combustion and Flame 51:263-277 (1983).
    [9] Bui,P. A., Vlachos, D. G. and Westmoreland, P. R., “Homogeneous Ignition of Hydrogen-Air Mixtures over Platinum,” Twenty-Sixth Symposium (International) on Combustion, The Combustion Institute, 1996, pp.1763-1770.
    [10] Fernandes, N. E., Park, Y. K., and Vlachos, D. G. ,“The Autothermal Behavior of Platinum Catalyzed Hydrogen Oxidation: Experiment and modeling,” Combustion and Flame 118: 164-178 (1999).
    [11] Appel , C., Mantzaras, J., Schaeren, R., Bobach, R., Inauen, A., Kaeppeli, B., Hemmerling, B. and Stampanoni, A.,“An Experimental and Numerical Investigation of Homogeneous Ignition in Catalytically Stabilized Combustion of Hydrogen/Air Mixtures Over Platinum,” Combustion and Flame 128:340-368 (2002).
    [12] Warnatz, J., Dibble, R. W. and Maas, U., Combustion, Physical and Chemical Fundamentals, Modeling andPhysical and Chemical Fundamentals, Modeling andSimulation, Springer-Verlag, New York, 1996.
    [13] Deutschmann, O., Schmidt, R., Behrendt, F. and Warnatz, J., “Numerical Modeling of Catalytic Ignition,” Twenty-Sixth Symposium (International) on Combustion, The Combustion Institute, 1996, pp.1747-1754.
    [14] Dupont, V., Moallemi, F., Williams, A. and Zhang S.-H., “Combustion of Methane in Catalytic Honeycomb Monolith Burners,” Int. J. Energy Res. 2000; 24:1181-1201. John Wiley & sons, Ltd.
    [15] Dupont, V., Zhang, S. H., Bentley, R. and Williams, A., “Experimental and modeling studies of the catalytic combustion of menthan,” Fuel 81 (2002) 799-810.
    [16] Seo, Y. S., Cho, S. J., Kang, S. K. and Shin, H. D., “Experimental and numerical studies on combustion characteristics of a catalytically stabilized combustion,” Catalysis Today, Vol.59, pp.75-86 (2000).
    [17] Wierzba, I. and Depiak, A., “Catalytic oxidation of lean homogeneous mixtures of hydrogen/hydrogen-mathane in air,” International Journal of Hydrogen Energy 29 (2004) 1303-1307.

    [18] Deutschman, O., Maier, L. I., Riedel, U., Stroemman, A. H. and Dibble, R. W. “Hydrogen assisted catalytic combustion of methane on platinum,” Catalysis Today, Vol.59, pp.141-150 (2000).
    [19] Boehman, A. L. and Dibble, R. W., “Experimental and numerical investigation on the influence of temporal fuel/air unmixedness on NOX emissions of lean premixed catalytically stabilized and non-catalytic combustion,” Catalysis Today, Vol.59, pp.131-140 (2000).
    [20] Eguchi, K. and Arai, H., “Recent Advances in High Temperature Catalytic Combustion,”Catalysis Today 12 pp.51-65 (1996).
    [21] Vaillant, S. R., and Gastec, A. S., “Catalytic combustion in a domestic natural gas burner,” Catalysis Today 47 pp.415-420 (1999).
    [22]Kesselring, J. P.,“Catalytic Combustion,”in Advanced Combustion Method, ed. By Weinberger, pp.237-257 (1986).
    [23] Aghalayam, P., Bui, P. A. and Vlachos, D. G., “The role of radical wall quenching in flame stability and wall heat flux: hydrogen-air mixtures,” Combust. Theory Modeling 2 (1998) 515-530.
    [24]Andrae, J., Bjornbom, P. and Edsberg, L., “Numerical Studies of Wall Effects with Laminar Methane Flames,” Combustion and Flame 128:165-180 (2002).
    [25] Kent, J. H., “A Noncatalytic Coating for Platinum-Rhodium Thermocouples,” Combustion and Flame 14:279-282, (1970).
    [26] Peterson, R. C. and Laurendeau, N. M., “Emittance of Yttrium-Beryllium Oxide Thermocouple Coating,” Combustion and Flame 60:279-284 (1985).
    [27] Aung, K. T., Hassan, M. I. and Faeth, G. M., “Flame Stretch Interaction of Laminar Premixed Hydrogen/Air Flames at Normal Temperature and Pressure,” Combustion and Flame 109:1-24 (1997).

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