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Show Flame detection: Flame detection is particularly important, as two different types of fuel are used. Spent fuel generates nonluminous flames of which the light intensity in UV lines is measured as one half of that of methane flames. Also, the intensity changes with varying pressure, load and oxygen concentration in air respectively, so that the set point level for flame detection must be carefully selected considering the possible range of condition change. 5. Conclusion The reformer burner is one of the most important components in the fuel cell power plant, and its increased reliability is essential for commercialization. The present study provided helpful data in identifying the effect of pressure on flames so that atmospheric pressure tests can be used for the prediction of pressurized flames. Also, the proposed burner design criteria can be said to establish a guideline for the rational design. However, further efforts are necessary to improve the accuracy of the prediction and the understanding of the phenomena. Reference [1] Appleby,A.J.,and Foulkes,F.R.,Fuel Cell Handbook,Van Nostrand Reinhold,(1989). [2] Asada,T.,and Usami,Y. ,Journal of Power Sources,Vol.29,(1990) p.97-107. [3] Hagiwara,A.,et al.,Japan Chem.Eng.Soc.Kansai Branch 23rd Fall Session, (1990). [4] Lewis von Elbe,"Combustion,Flames and Explosions of Gases", Academic Press, P.695. [5] JSME,"Heat Transfer Engineering Handbook (Ver.4)",(1986). [6] Tbuchton,G.L. ,and Dibelius, N.R., ASME Gas Turbine and Fluids Eng. Conf.in New Orleans, March (1976), P.156-160. [7] Ootake,K. ,and Fujiwara,T. ,"Combustion Engineering",Corona Press,(1985). [8] Owen,F.K.,et al.16th Symposium on Combustion(International), Academic Press, (1977). [9] Iino,T. ,Journal of Japan Fuel Institute, Vo1.68 No.2,(1989). 15 |