11
20126064
GB
Technical description of the burner
4.10
Air side pressure drop (detected upline of the damper with complete opening)
The pressure curves refer to the combustion head adjustment
conditions according. In the event that the supplied air has a tem-
perature greater than 20°C and/or an altitude greater than 100 m.
a.s.l., the pressure drops of the head shown in the diagram are
multiplied by the coefficient
K
c
indicated in Tab. F.
Example:
Burnt output = 5000 kW - Altitude = 750 m. a.s.l. - Combustion air
temperature = 120 °C
From the diagram, for an output of 5000 kW, the total pressure
drop obtained at the head is equal to:
∆
p
20
= 10 mbar (combus-
tion air at 20 °C and 100 m. a.s.l. altitude).
In Tab. F there is a multiplier coefficient, for combustion air at
120 °C and an altitude of 750 m. s.l.m., equal to
Kc = 1.449.
The total pressure drop of the burner head is:
∆
p =
∆
p
20
x
K
c
= 10 x 1.449 = 14,49 mbar.
Tab. F
0 2000 4000 6000 8000 10000 12000 14000
60
50
40
30
20
10
mbar
KW
DB
12
DB
9
Fig. 5
Burner output
Pb - kW
D3977
∆
p
[m
b
a
r]
Altitude
K
c
Air temperature °C
m. a.s.l.
0
20
40
60
80
100
120
140
160
180
200
220
250
0
0.920
0.988
1.055
1.122
1.190
1.257
1.325
1.392
1.459
1.527
1.594
1.662
1.763
100
0.932
1.000
1.069
1.137
1.205
1.273
1.342
1.410
1.478
1.547
1.615
1.683
1.786
500
0.976
1.047
1.119
1.190
1.262
1.333
1.405
1.477
1.548
1.620
1.691
1.763
1.870
750
1.007
1.080
1.154
1.228
1.302
1.375
1.449
1.523
1.596
1.670
1.744
1.818
1.928
1000
1.038
1.114
1.190
1.266
1.342
1.418
1.494
1.570
1.646
1.722
1.798
1.874
1.988
1250
1.069
1.147
1.226
1.304
1.382
1.460
1.539
1.617
1.695
1.774
1.852
1.930
2.048
1500
1.102
1.182
1.263
1.344
1.425
1.505
1.586
1.667
1.747
1.828
1.909
1.990
2.111
1750
1.130
1.213
1.295
1.378
1.461
1.544
1.626
1.709
1.792
1.875
1.957
2.040
2.164
2000
1.174
1.260
1.346
1.432
1.518
1.604
1.690
1.776
1.862
1.948
2.034
2.120
2.249
2250
1.206
1.294
1.382
1.471
1.559
1.647
1.736
1.824
1.912
2.001
2.039
2.177
2.310
2500
1.251
1.343
1.434
1.526
1.618
1.709
1.801
1.893
1.984
2.076
2.168
2.259
2.397
2750
1.284
1.378
1.472
1.566
1.660
1.754
1.848
1.942
2.036
2.130
2.224
2.318
2.460
3000
1.320
1.417
1.514
1.610
1.707
1.804
1.901
1.997
2.094
2.191
2.287
2.384
2.529
Содержание DB 12 SM C03 TC A0 FS1 T250
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