Operating Instructions and Installation Instructions

LR, LRK, LR-NT, LRK-NT 21 - 32
We reserve the right to make changes to dimensions and construction 20 edition 30.10.2007
4.6.6. Pyronox LR-NT (lox NOx version)
Technical specifications LR-NT (fuel oil, low NOx)
LR-NT 212223242526272829303132
Power
Boiler nominal power qN (80/60°C)
max. 450 500 550 625 700 850 975 1100 1400 1700 2150 2600
min.
2
185 235 235 315 315 422 512 512 602 740 1035 1048
min.
3
147 188 188 257 257 358 429 429 494 616 886 890
Calorific power qF
max. 496 544 603 678 766 927 1059 1204 1544 1872 2358 2895
min.
2
196 248 248 332 332 444 554 540 634 779 1089 1104
min.
3
154 197 197 269 269 375 450 450 517 645 928 933
Modulation rate at 80/60 °C
2
40% 46% 41% 49% 43% 48% 52% 45% 41% 42% 46% 38%
3
31% 36% 33% 40% 35% 40% 42% 37% 33% 34% 39% 32%
Efficiencies
Overall efficiency 60 / 80 °C
100%
%
90.8 91.9 91.3 92.1 91.4 91.7 92.1 91.3 90.7 90.8 91.2 89.8
Overall efficiency @ tm = 48 °C
30%
3
%
95.4 95.4 95.4 95.5 95.5 95.5 95.5 95.5 95.5 95.5 95.5 95.5
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 95.4
Efficiency DIN4702-8, 60 / 75 °C
ηN
3
%
94.5 94.9 94.7 95.0 94.8 95.0 95.1 94.9 94.8 94.8 95.0 94.6
Mass flows
Fuel oil flow
max.
1
41.8 45.9 50.9 57.2 64.6 78.2 89.3 101.6 130.3 157.9 199.0 244.3
min.
1,3
13 16.6 16.6 22.7 22.7 31.7 38.0 38.0 43.6 54.5 78.3 78.7
Exhaust gas mass flow
max. wet 0.21 0.23 0.26 0.29 0.33 0.40 0.46 0.52 0.66 0.81 1.02 1.25
min. wet
3
0.07 0.08 0.08 0.12 0.12 0.16 0.19 0.19 0.22 0.28 0.40 0.40
Exhaust gas data, losses
Overpressure combustion chamber
max.
mbar
4.41 3.22 3.96 4.13 5.29 5.22 4.84 6.31 7.37 8.04 8.09 7.40
Exhaust gas temperature at 80/60 °C
max. 208 186 199 182 197 190 181 198 212 209 201 229
min.
2
min.
3
Exhaust gas losses at 80/60 °C
max.
%
8.97.98.57.78.48.17.78.59.29.08.710.1
Stand-by loss qB
70 °C
W
781 883 883 102010201178138213821565174220732330
Hydraulic data
Water resistance
Δ
t=10K
30 37 45 58 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-09/07
- lamda=1.2, CO2=12.7%
NT-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)
m3/h
°C
110
110
95
kg/h
°C
mbar
120
kW
kW
kg/s
90
100
110
120
130
140
150
160
170
180
190
200
210
220
230
0 500 1000 1500 2000 2500 3000
QN [kW]
[°C]
NT-OB
LR-NT21
LR-NT22
LR-NT23
LR-NT24
LR-NT25
LR-NT26
LR-NT27
LR-NT28
LR-NT29
LR-NT30
LR-NT32
LR-NT31
Smax = 0.2%
Smax = 0.05% (500 ppm)
Smax = 50 ppm
Flue gas temperature diagram LR-NT, low NOx, fuel oil with clean boiler
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