65
gaSteam cod. +030221930 rel. 5.3 - 06.06.2005
14.2 Valori tecnici dei gas di scarico in funzione
della portata termica utile
14.1 Thermo-hydraulic characteristics
14.2 Flue gas values according to the useful heat input
UG040
UG090
heat output
rated
kW
29.00
64.1
minimum
7.21
14.7
heat input
rated
kW
31.20
68.18
minimum
8,00
16.3
steam production
rated
kg/h
40
90
minimum
10
22.5
maximum steam operating temperature
°C
105
105
water content in stable conditions
l
56
120
NOx emissions
class
5 (<70 mg/kWh)
5 (<70 mg/kWh)
CO
2
natural gas (G20)
% vol
9.2
9.4
natural gas (G25)
% vol
9.1
9.3
propane (G31)
% vol
11.0
11.4
butane (G30)
% vol
11.9
11.6
CO
mg/kWh
<60 *
<60 *
flue diameter
mm
80
80
air inlet pipe diameter
mm
80
80
steam pipe diameter
mm
40
2x40
natural gas rate (G20)
rated
m
3
St/h **
3.30
7.21
minimum
0.84
1.75
natural gas rate (G25)
rated
m
3
St/h **
3.84
8.7
minimum
0.98
1.98
propane rate (G31)
rated
m
3
St/h **
1.27
2.68
minimum
0.32
0.68
butane rate (G30)
rated
m
3
St/h **
0.96
2.06
minimum
0.24
0.545
supply gas pressure
natural gas (G20)
Pa/mbar/PSI
2000/20/0.29
2000/20/0.29
natural gas (G25)
Pa/mbar/PSI
2000/20/0.29
2000/20/0.29
propane (G31)
Pa/mbar/PSI
3000/30/0.44
3000/30/0.44
butane (G30)
Pa/mbar/PSI
3000/30/0.44
3000/30/0.44
max pressure drop allowed between air inlet pipe and flue outlet
Pa/mbar/psi
90/0.90/0.013
82/0,82/0,012
Tab. 14.1.1
* value referred to combustion with natural gas (G20);
** m3St = dry gas at 15°C and an atmospheric pressure of 1013.25 mbar.
Tipo combustibile/
Type of fuel
Metano (G20)
Metano (G25)
Propano (G31)
Butano (G30)
Natural gas (G20)
Natural gas (G25)
Propane (G31)
Butane (G30)
UG040
UG090
UG040
UG090
UG040 UG090
UG040
UG090
Portata termica nominale/
Nominal heat rate
kW/kcal/h
31,2 /
68,18
31,2 /
68,18 /
31,2 /
68,18 /
31,2 /
68,18 /
26.832
58,635
26.832
58,635
26.832
58,635
26.832
58,635
Portata fumi/
Flue gas flow rate
kg/s
0,0148
0,0318
0,0149
0,0321
0,0140
0,0297
0,0129
0,0289
Temperatura dei fumi/
Flue gas temperature
°C
110
165
110
165
110
165
110
165
Percen. CO
2
nei fumi/
Percen. CO
2
in the flue gas
%
9,2
9,4
9,1
9,3
11,0
11,4
11,9
11,6
Tab. 14.2.1
