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Show 2 - $ I -- - 1 1 \« \ A \ B \ i i i \« \ \ > i i \ \ V \ 9 i N - - -n- 1000 2000 3000 Fig. 12. The transverse maximum of C H , content in the furnace midplane (z = 500 m m ) as a function of distance from the burner wall, results of the Senes 1-XBM2-F single-burner, full-furnace trials A summary of the operating conditions of the trials in Sets A, B and C is given in Table 6. Key to data Symbol Set T„ °C Te, °C~ D A o a A A 299 970 B 332 1169 C 380 1459 from horizontal traverses (nearfield port) from vertical traverses Zone 1-H« Zone 2 f-Zone 3- L = 2 xc Fig. 14. The strong-jet/weak-jet situation. In the present context, the wall on the left is a burner wall, the jet issuing from port 1 is of fuel, and the jet from port 2 is of air. The distance xc is from the burner wall to the point of confluence or osculation, c, where the trajectory of the fuel jet meets the statistical boundary of the air jet. The mixing zones are explained in the text. 400- oT 200- Fig. 13. Effective flame radius (based on C K , profiles) as a function of distance from the burner wall, results of the Series 1-XBM2-F single-burner, full-furnace trials. See Fig. 13 for key to data. The point marked "B" at x = 0 represents the burner rim (the circle containing the centres of exit of the fuel and air ports) Note that Rf = 500 m m is at the furnace floor or roof, and x = 3000 m m is at the blind sidewall, opposite the burner side-wall. For the trials of set A, w e indicate the likely shape of the flame in a furnace large enough to avoid impingement on the furnace boundaries (our furnace actually fell short in these trials). 38 |