8
CHAPTER
2
Burner description
2.5
Air side pressure drop
(taken upstream from the completely open air damper)
The pressure curves refer to the different adjustment conditions for the combustion head in accordance to the graphic on page 13.
Refer to
Paragraph 5.1
.
In the case of air supply at a higher temperature than 20°C and/or an altitude higher than 100 m. a.s.l., the pressure drop in the
head that is shown in the graph must be multiplied by the
K
c
coefficient as indicated in the table below.
Example
for
DB 6
Burnt output = 6000 kW - Altitude = 750 m. a.s.l. - Combustive air temperature = 120 °C
From the diagram, with an output of 7000 kW, a total head pressure drop is shown of:
p
20
= 40 mbar
(combustive air at 20 °C
and altitude 100 m. a.s.l.).
The table gives a multiplying coefficient, for combustive air at 120 °C and altitude 750 m. a.s.l., equal to
K
c
= 1.449.
The total pressure drop of the burner head is:
p
=
p
20
x
K
c
= 40 x 1.449 = 58 mbar.
Altitude
K
c
Air temperature °C
m. a.s.l.
0
20
30
40
50
60
70
80
90
100
120
140
150
0
0.920
0.988
1.021
1.055
1.089
1.122
1.156
1.190
1.223
1.257
1.325
1.392
1.426
100
0.932
1.000
1.034
1.069
1.103
1.137
1.171
1.205
1.239
1.273
1.342
1.410
1.444
500
0.976
1.047
1.083
1.119
1.155
1.190
1.226
1.262
1.298
1.333
1.405
1.477
1.512
750
1.007
1.080
1.117
1.154
1.191
1.228
1.265
1.302
1.338
1.375
1.449
1.523
1.560
1000
1.038
1.114
1.152
1.190
1.228
1.266
1.304
1.342
1.380
1.418
1.494
1.570
1.608
1250
1.069
1.147
1.186
1.226
1.265
1.304
1.343
1.382
1.421
1.460
1.539
1.617
1.656
1500
1.102
1.182
1.223
1.263
1.304
1.344
1.384
1.425
1.465
1.505
1.586
1.667
1.707
1750
1.130
1.213
1.254
1.295
1.337
1.378
1.419
1.461
1.502
1.544
1.626
1.709
1.751
2000
1.174
1.260
1.303
1.346
1.389
1.432
1.475
1.518
1.561
1.604
1.690
1.776
1.819
2250
1.206
1.294
1.338
1.382
1.427
1.471
1.515
1.559
1.603
1.647
1.736
1.824
1.868
2500
1.251
1.343
1.389
1.434
1.480
1.526
1.572
1.618
1.664
1.709
1.801
1.893
1.939
2750
1.284
1.378
1.425
1.472
1.519
1.566
1.613
1.660
1.707
1.754
1.848
1.942
1.989
3000
1.320
1.417
1.465
1.514
1.562
1.610
1.659
1.707
1.755
1.804
1.901
1.997
2.046
60
50
40
30
20
10
DB6
DB
4
0 3000 4000 5000 6000 7000 8000
D12215
Burner output
Pb
[kW]
p
[mbar]
Fig. 10
Summary of Contents for DB 6 SM CO1 A0
Page 2: ......
Page 43: ...1...
Page 44: ...2 1 3 3 3 2 4 4 4 5 6 8 9 3 10 10 10 10 10 4 11 11 12 5 13 13 14 15 15 17 18 18 6 19 19...
Page 47: ...5 2 2 3 1 2 3 4 5 6 7 8 9 10 11 UV 12 13 14 15 16 17 18 19 20 21 M12x16 2 20076243...
Page 49: ...7 2 DN 80 160 18 4 54 5 4 9 5 3 8 0 M18 D8325 7 8 D3974 9 D7549 DB6 SM...
Page 53: ...11 4 4 1 D7543 C GF HPG LPG MM PA PGM PGm RG SRV VE VPS VR VS 0 5 4 bar 500 mbar 16...
Page 54: ...12 4 4 2 MB PA PGM SM UV UV TA TB D9854 17...
Page 56: ...14 5 5 2 20 20 20076847...
Page 57: ...15 5 5 3 1 4 2 3 5 6 7 1 2 0 3 20 4 5 20 130 1 4 5 4 130 22 21 D1500 3 2 4 1 22 1 2 3 4 D1499...
Page 58: ...16 5 MAN 3 1 130 90 2 22 2 22 20 2 2...
Page 60: ...18 5 5 7 70 A 187 V 100 A c c 100 F 1V c c 5 8 1 2 3 4 5 1 2 3 4 5 6 D1143 26...
Page 61: ...19 6 6 1 1 2 3 VR VR VS VR...
Page 62: ...20 6...
Page 63: ......
