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LR, LRK, LR-NT, LRK-NT 21 - 32
We reserve the right to make changes to dimensions and construction 14 edition 30.10.2007
4.6.3. Pyronox LR (low-NOx version)
Technical specifications LR (fuel oil, low NOx)
LR 21 22 23 24 25 26 27 28 29 30 31 32
Power
Boiler nominal power qN (80/60°C)
max. 450 500 550 625 700 850 975 1100 1400 1700 2150 2600
min.
2
211 272 272 355 355 494 582 582 680 847 1217 1272
min.
3
168 216 216 290 290 410 488 488 566 704 1041 1053
Calorific power qF
max. 490 539 597 673 759 915 1047 1189 1521 1844 2320 2827
min.
2
223 287 287 374 374 520 613 613 716 891 1280 1339
min.
3
176 227 227 304 304 430 511 511 593 738 1090 1103
Modulation rate at 80/60 °C
2
46% 53% 48% 56% 49% 57% 59% 52% 47% 48% 55% 47%
3
36% 42% 38% 45% 40% 47% 49% 43% 39% 40% 47% 39%
Efficiencies
Overall efficiency 60 / 80 °C
100%
%
91.9 92.7 92.2 92.9 92.3 92.9 93.1 92.5 92.1 92.2 92.7 92.0
Overall efficiency 50 / 70 °C
30%
3
%
95.3 95.3 95.3 95.3 95.4 95.3 95.3 95.4 95.4 95.4 95.4 95.4
Overall efficiency 60 / 80 °C
min qF
3
%
95.2 95.3 95.3 95.4 95.4 95.4 95.4 95.4 95.4 95.5 95.5 95.5
Efficiency DIN4702-8, 60 / 75 °C
ηN
3
%
94.8 95.0 95.0 95.1 95.1 95.2 95.2 95.1 95.1 95.1 95.3 95.1
Mass flows
Fuel oil flow
max.
1
41.4 45.5 50.4 56.8 64.1 77.2 88.4 100.3 128.4 155.6 195.8 238.6
min.
1,3
14.9 19.1 19.1 25.6 25.6 36.3 43.1 43.1 50.1 62.2 92 93.0
Exhaust gas mass flow
max. wet 0.21 0.23 0.26 0.29 0.33 0.39 0.45 0.51 0.66 0.79 1.00 1.22
min. wet
3
0.08 0.10 0.10 0.13 0.13 0.19 0.22 0.22 0.26 0.32 0.47 0.47
Exhaust gas data, losses
Overpressure combustion chamber
max.
mbar
4.08 3.01 3.70 3.87 4.94 4.69 4.40 5.71 6.61 7.25 7.36 6.85
Exhaust gas temperature at 80/60 °C
max. 186 169 180 165 178 165 160 173 183 181 170 185
min.
2
min.
3
Exhaust gas losses at 80/60 °C
max.
%
7.97.07.66.97.56.96.77.37.87.77.27.9
Stand-by loss qB
70 °C
W
781 883 883 1020 1020 1178 1382 1382 1565 1742 2073 2330
Hydraulic data
Water resistance
Δ
t=10K
30 37 45 59 73 108 58 74 120 85 136 63
Δt=20K
8 9 11 15 18 27 15 19 30 21 34 16
Water flow
max. 38.7 47.3 47.3 60.1 60.1 73.0 94.5 94.5 120.3 146.1 184.7 223.4
Operating temperatures
max.
SCO
Values acc. EN304 at:
3zugskessel, V-07/06
- lamda=1.2, CO2=12.7%
OB
- T-air=20°C, rel. humidity=60%, p-baro=100kPa
1: LCV = 11.85 kWh/kg
2: Sulphur content up to 0.2%
3: Max. sulphur content 0.05% (500 ppm)
120
kW
kW
kg/s
110
110
95
kg/h
°C
mbar
m3/h
°C
90
100
110
120
130
140
150
160
170
180
190
0 500 1000 1500 2000 2500 3000
QN [kW]
[°C]
OB
LR21
LR22
LR23
LR24
LR25
LR26
LR27
LR28
LR29
LR30
LR32
LR31
Smax = 0.2%
Smax = 0.05% (500 ppm)
Smax = 50 ppm
Flue gas temperature diagram LR, low-NOx and fuel oil with clean boiler
© Copyright YGNIS AG CH-Ruswil
16


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