Environmental Engineering Reference
In-Depth Information
Regenerative burner
Conventional burner
1500
1480
T=75 K
T=37 K
1460
1440
1420
1400
0
2
4
6
8
10
12
14
Furnace Width, m
FIGURE 3.21
Comparison of temperature distributions in width direction between regener-
ative burner and conventional burner.
temperatures differed greatly, 1442 K for the regenerative burner and 1408 K for
the conventional burner. Hence, the conventional burner gave much lower temper-
ature at the furnace center in the width direction. This is because the regenerative
burner allows twice as much combustion load as the conventional burner. Therefore,
it had a high jet velocity generating a long burner flame. The regenerative burner
showed a temperature difference of 37 K between maximum and minimum, whereas
the conventional burner showed 75 K, about twice that for the regenerative burner.
Temperature uniformity can be realized in the furnace with the regenerative burner.
The temperature distribution in the furnace becomes more uniform with the higher
Reynolds number of the combustion air.
By demonstrating some examples, it is shown that the transient behavior in
switching operation of regenerative burners can be simulated using LES turbulence
model, but some time is necessary before the method can be used as a practical
design tool.
REFERENCES
1. D. B. Spalding,
Proc. Combust. Instit.
, 13:649, 1970.
2. B. F. Magnussen and H. Hjertager,
Proc. Combust. Instit.
, 16:719, 1976.
3. C. T. Bowman et al.,
http://www.me.berkeley.edu/gri_mech/
, 1995
.
4.
T. Fujimori, D. Riechelmann, and J. Sato, The First Asia-Pacific Conf. on Combust.,
p. 298, 1997.
5.
T. Fujimori et al.,
Proc. Combust. Instit.
, 34:447, 1996.
6.
T. P. Coffee,
Combust. Sci. Technol.
, 43:333, 1985.
7.
W. P. Jones and R. P. Lindstedt,
Combust. Flame
, 73:233, 1988.
8.
S. K. Srivatsa, Technical Report CR-167930, NASA Report, 1982.
9.
D. K. Edwards, ASME,
J. Heat Transfer
, 84C:1, 1962.
10.
H. C. Hottel,
Heat Transmission
, McGraw-Hill, New York, 1954.
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