| OCR Text |
Show Table 1. Burner specifications. Note that fuel nozzles were available in any of the diameters D\ coupled with any of the port angles ft Each air nozzle could be coupled with any fuel nozzle. Burner N XBM1 7 r\, r2, mm mm 110 87. 3 Du D2. ft, m m mm deg 6.22 15.88 65 02, deg 10 XBM2 7 86 86 4.76 6.35 7.94 15.88 19.05 24.31 30 35 42.5 50 65 10 Tables 2, 3 4 and 7: see next two pages Table 6. Results on flame size, volumetric combustion intensity, and predictions of theory, Series 1-XBM2-F trials. Burner parameters: Dt = 6.35 m m , D2 = 19.05 m m , ft = 35°, ft = 10°. Set Trials m,(-Me),kW £,% V\i Tay°C Tt,°C <Tr>, °C Lf, m maxRf, m Vf,m' mf(-iShe)fVf,kWm3 xc, m m xJDx xJD2 (m-mf)l mf , fuel jet (m-ma)/ma, air jet L/.thoory, m m t-'ft-'f,thcory (L//Lfttheorf)Te, K A 950516, 950615 313 19.3 0.0202 299 970 835 2.6* 0.6* 1.45* 216* 577 90.9 30.3 18.2 6.44 1154 2.25 2800 B 950601, 950613 312 12.7 0.0214 332 1169 906 2.05 0.46 0.72 433 601 94.6 31.5 17.6 6.40 1203 1.70 2457 C 950607, 950610 309 13.3 0.0197 380 1459 1045 1.65 0.43 0.47 657 565 89.0 29.7 15.1 5.71 1130 1.46 2529 •Estimate for a furnace large enough to avoid impingement (combustion chamber height > 1.2 m ) flame Table 5. Values of the coefficient C0 and exponent n in (5) for Series 1-XBM2-T and Series 3-XBM2-F trials. In all these trials, D\ = Trials Series 1-XBM2-T single-burner trials 950210,950215 950131 950206 950208 950213 D2, mm 19.05 15.88 19.05 24.31 19.05 6.35 m m and # 0i, deg 30 35 35 35 42.5 c0„ ppm 20.0 16.2 16.2 26.3 17.4 = 10°. n 0.58 0.81 0.81 0.58 0.38 Series 2-XBM2-F three-burner trials 950316 950314 050328 950323 19.05 1905 19.05 19.05 65 35 35 35 11.8 11.8 3.75 2.26 0.46 0.71 1.50 1.27 Table 8. Some predicted flame and flow dimensions for d\2 = 38.3 m m , t\ - 10°, and wx 2 =0.02. fl,deg P\2, deg ft - ft, deg x,-, mm Lf, m m ym,mm ^*,mm 30 21.4 20 378 757 84 182 35 26.3 25 20 1145 125 224 42.4 33.7 32.5 1255 2510 268 594 65 56.1 55 44000 88000 13000 24000 c 30 |
