OCR Text |
Show E Q. CL, 5 # u o S 500 1000 c,25° Fig. 7. The N O x level in the exhaust gases, adjusted to Ta = 400 °C and XQi = 3 %, as a function of the firing rate in the Series 3-XBM2-F three-burner trials Fixed burner parameters: Dx = 6.35 m m , D2 = 19.05 m m , ft = 10°. Key to data: Symbol O • • A Trials 950316 950314 950328 950323 fl,deg 65 35 35 35 £ Q. 00 10 1 " \ \ i C \ \ 1 b iRD il 1 d ^ - \ • i i a\ i \ - - - 0.4 0.5 0.6 0.7 -l 0.8 0.9 I/I,, k K Fig. 8. The N O x level in the exhaust gases, adjusted to m0 (-A/7f°25.) = 300 k W per burner, Ta = 400 °C and XQ = 3 %. Fixed burner parameters: D\ = 6.35 m m , D2 = 19.05 m m , ft = 10°. Curve a: thermodynamic equilibrium. Curves b and c: predictions from well-stined reactor model with Zeldovich mechanism Curve b: full furnace with three burners. Curve c: full furnace with one burner. Curve d: curve fitting experimental results of Bindar (1996), as examined by Becker, Grandmaison, Pollard and Sobiesiak (1995), for an older commercial low-NOx burner tested in the C A G C T furnace in three-burner operation. Key to symbols: O • • Series 3-XBM2-F three-burner, full-furnace trials A Series 1-XBM2-F single-burner, full-furnace trials V Series 1-XBM2-T single-burner, tunnel-chamber trials # Trial 950324; abnormal conditions. T wo bare sink panels overheated, trial terminated early. 0 # A V , #=35°; •, ft =65° 36 |