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Show Figure 6. Axial variation of centreline oxygen 15 - TS © 10 o G 0 u c 01 ex I I I I I I I I I I I I I I I I I I I I I I I I I I I I I • Air 4 21% 02/79% C02 • 28% 02/72% C02 A 35% 02/65% C02 () I • • • • ! • • • • I • • i • I • . . • I • • i I I 1 2 3 4 5 Dimensionless axial distance Z/D Figure 7. Flue gas oxygen concentration 15 - -3 "© 0> u © (J s <u ox **, X o 10 T - • - r I Air • 21% 02/79% C02 • 28% 02/72% 002 A 35% 02/65% C02 a..,.., It A -L 15 30 45 60 75 90 Time duration of test, min 105 120 | i 18 |