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LR, LRK, LR-NT, LRK-NT 21 - 32
We reserve the right to make changes to dimensions and construction 25 edition 30.10.2007
4.7.4. Pyronox LRK-NT
Technical specifications recuperator (fuel oil)
LRK-NT 21 22 23 24 25 26 27 28 29 30 31 32
Power
Nominal power qN (30 / 35°C)
max.
1
50 46 55 53 68 67 91 116 160 172 223 269
min.
1
16 20 20 26 26 34 43 43 51 62 86 90
Efficiencies
Overall efficiency 30 / 35 °C
100%
1
%
98.0 98.2 98.1 98.2 98.1 98.2 98.2 98.1 98.0 98.1 98.1 98.0
Overall efficiency 30 / 35 °C
30%
2
%
102.8 102.5 102.6 102.4 102.6 102.3 102.5 102.7 102.8 102.7 102.7 102.9
Efficiency DIN4702-8, 60 / 75 °C
η
N
%
102.2 102.3 102.3 102.3 102.4 102.3 102.4 102.4 102.4 102.4 102.5 102.6
Exhaust gas data, losses
Additional exhaust gas pressure drop
max
mbar
2.92 1.36 1.66 1.94 2.66 1.50 1.35 1.81 3.02 2.26 2.41 1.97
Total combustion space overpressure
max
mbar
9.27 5.81 7.00 7.24 9.80 7.34 8.31 11.00 13.71 12.61 13.69 10.37
Exhaust gas temperature at 30 / 35 °C
max.
1
54 51 53 50 52 50 51 53 55 53 53 54
min.
1
34 35 35 35 35 36 35 35 35 35 35 34
Exhaust gas losses at 30 / 35 °C
max.
%
1.81.61.71.61.71.61.61.81.91.81.81.8
Stand-by loss qB
70 °C
W
824 926 926 1073 1073 1239 1447 1447 1645 1831 2166 2427
Hydraulic data
Water resistance
Δ
t=5K
30 37 51 33 55 38 49 80 98 78 83 86
Δt=10K
7 9 13 8 14 9 12 20 24 20 21 21
Water flow
max. 8.6 7.9 9.4 9.1 11.7 11.5 15.6 19.9 27.4 29.5 38.2 46.1
min. 7.2 7.2 8.1 8.6 10.1 11.0 14.1 16.5 22.3 24.2 30.7 40.6
Condensate
Amount of condensate
max.
L / h
15 17 18 22 23 28 35 38 47 56 75 80
Values at:
3zugskessel, V-09/07
- lamda=1.2, CO2=12.7%
NT-OG
- T-air=20°C, rel. humidity=60%, p-baro=100kPa
1: Boiler at 60 / 80 °C
2: Boiler at 35 / 60 °C
kW
mbar
°C
m3/h
Technical specifications recuperator (natural gas)
LRK-NT 21 22 23 24 25 26 27 28 29 30 31 32
Power
Nominal power qN (30 / 35°C)
max.
1
64 72 78 87 99 111 143 159 198 232 306 355
min.
1
11 14 14 18 18 29 36 36 41 52 78 79
Efficiencies
Overall efficiency 30 / 35 °C
100%
1
%
100.2 102.0 101.2 102.6 101.4 102.5 102.1 100.9 99.9 100.8 100.9 100.7
Overall efficiency 30 / 35 °C
30%
2
%
107.7 107.7 107.7 107.7 107.8 107.7 107.8 107.9 107.8 107.9 107.9 107.9
Efficiency DIN4702-8, 60 / 75 °C
ηN
%
106.8 107.0 107.0 107.1 107.0 107.2 107.2 107.1 107.0 107.1 107.2 107.1
Exhaust gas data, losses
Additional exhaust gas pressure drop
max
mbar
2.99 1.40 1.70 1.98 2.73 1.54 1.38 1.85 3.10 2.31 2.47 2.02
Total combustion space overpressure
max
mbar
9.47 5.94 7.16 7.39 10.02 7.50 8.50 11.23 14.04 12.87 13.97 10.59
Exhaust gas temperature at 30 / 35 °C
max.
1
54 50 52 49 52 49 50 53 55 53 53 53
min.
1
31 32 32 32 32 32 32 32 32 32 32 32
Exhaust gas losses at 30 / 35 °C
max.
%
1.8 1.6 1.7 1.6 1.7 1.6 1.6 1.7 1.9 1.8 1.8 1.8
Stand-by loss qB
70 °C
W
824 926 926 1073 1073 1239 1447 1447 1645 1831 2166 2427
Hydraulic data
Water resistance
Δ
t=5K
49 89 105 89 115 102 121 151 149 143 156 150
Δ
t=10K
12 22 26 22 29 26 30 38 37 36 39 38
Water flow
max. 11.0 12.3 13.4 14.9 17.0 19.0 24.5 27.3 33.9 39.8 52.5 60.9
min. 7.2 7.2 8.1 8.6 10.1 11.0 14.1 16.5 22.3 24.2 30.7 40.6
Condensate
Amount of condensate
max.
L / h
40 45 48 55 62 72 92 100 122 143 190 210
Values at:
3zugskessel, V-09/07
- lamda=1.15, CO2=10%
NT-GG
- T-air=20°C, rel. humidity=60%, p-baro=100kPa
1: Boiler at 60 / 80 °C
2: Boiler at 45 / 70 °C
m3/h
kW
mbar
°C
© Copyright YGNIS AG CH-Ruswil
27


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