Spectroscopic Methods and Visualization Applied to Combustion Diagnoses - Novel Combustion Concepts for Sustainable Energy Development - page 184

45

1.0

40

0.9

0.8

35

0.7

30

0.6

25

0.5

0.4

20

0.3

15

0.2

10

0.1

0

5

-15 -12 -9 -6 -3 0

r [mm]

Fig. 12 Dimensionless pro le of [D 2 O/H 2 O] ratio

Higher FeO concentration (LIF intensity) re .

This method was applied to a premixed acetylene/air combustion

fl ects “ oxidative ”

ame.
The PLIF system is basically same as that described above. The burner used for
acetylene/air premixed combustion is a commercially available slit burner used in
atomic absorption spectrometry for trace element analyses.
Figure 13 demonstrates the acetylene/air premixed combustion

fl

fl flames without

and with spraying a ferric nitrate solution as a chemical seed.

Fig. 13 Photographs of acetylene/air premixed combustion fl flames. a Without chemical seeding of

Fe(NO 3 ) 3 and b with chemical seeding of Fe(NO 3 ) 3