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4.10
Air side pressure drop (measured upstream of the damper with complete opening)
The pressure curves refer to the combustion head adjustment
conditions (Fig. 5).
In the event that the supplied air has a temperature 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 co-
efficient K
indicated in the Tab. F.
c
Example:
burner output = 2000 kW - Altitude = 100 m. a.s.l. - Combustion
air temperature = 120 °C
From the diagram, for an output of 2000 kW, the total pressure
drop obtained at the head is equal to: ∆p
tion air at 20 °C and 100 m. a.s.l. altitude).
A multiplicative coefficient can be found on the Tab. F, for com-
bustion air at 120 °C and at 100 m. a.s.l., equal to Kc = 1.342 .
The total pressure drop of the burner head is:
∆p = ∆p
x K
= 11.3 x 1.342 = 15.2 mbar.
20
c
Altitude
m. s.l.m.
0
20
0
0.920
0.988
100
0.932
1.000
500
0.976
1.047
750
1.007
1.080
1000
1.038
1.114
1250
1.069
1.147
1500
1.102
1.182
1750
1.130
1.213
2000
1.174
1.260
2250
1.206
1.294
2500
1.251
1.343
2750
1.284
1.378
3000
1.320
1.417
Technical description of the burner
= 11.3 mbar (combus-
20
40
60
80
1.055
1.122
1.190
1.069
1.137
1.205
1.119
1.190
1.262
1.154
1.228
1.302
1.190
1.266
1.342
1.226
1.304
1.382
1.263
1.344
1.425
1.295
1.378
1.461
1.346
1.432
1.518
1.382
1.471
1.559
1.434
1.526
1.618
1.472
1.566
1.660
1.514
1.610
1.707
10
9
8
7
6
5
0
300
450
16
14
12
10
8
6
4
1000
K
c
Air temperature °C
100
120
140
1.257
1.325
1.392
1.273
1.342
1.410
1.333
1.405
1.477
1.375
1.449
1.523
1.418
1.494
1.570
1.460
1.539
1.617
1.505
1.586
1.667
1.544
1.626
1.709
1.604
1.690
1.776
1.647
1.736
1.824
1.709
1.801
1.893
1.754
1.848
1.942
1.804
1.901
1.997
11
GB
600
750
900
Burner output Pb [kW]
1500
2000
Burner output Pb [kW]
160
180
200
1.459
1.527
1.594
1.478
1.547
1.615
1.548
1.620
1.691
1.596
1.670
1.744
1.646
1.722
1.798
1.695
1.774
1.852
1.747
1.828
1.909
1.792
1.875
1.957
1.862
1.948
2.034
1.912
2.001
2.039
1.984
2.076
2.168
2.036
2.130
2.224
2.094
2.191
2.287
D8676
1050
1200
kW
D9194
2500
Fig. 5
220
250
1.662
1.763
1.683
1.786
1.763
1.870
1.818
1.928
1.874
1.988
1.930
2.048
1.990
2.111
2.040
2.164
2.120
2.249
2.177
2.310
2.259
2.397
2.318
2.460
2.384
2.529
Tab. F
20118862
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