Use
23
Combustion guide values:
FUEL
%CO
2
Flue gas temperature
% CO
Gas (Methane)
10
190°C
0 – 20 ppm
A diagram determines the boiler efficiency according to the flue gas and air temperature and the carbon dioxide percentage
(%CO
2
), but without considering the losses through the boiler casing.
Efficiency diagram (significant losses only) (%)
7
8
9
10 10,5 11
12
13
14
15
16
%CO
2
Ta
Tf
G
350
300
250
200
210
150
94
93
92
91
90
89
88
87
86
50° 40° 30°20°
Tf
__tab__Flue gas temperature in chimney °C
Ta
__tab__Ambient temperature in °C
G
__tab__Gas
Example
Flue gas temperature:__tab__160 °C
Ambient temperature:__tab__20 °C
%CO
2
__tab____tab____tab__10%
Fuel:__tab____tab__Gas
Efficiency:
__tab____tab__
93.2%
The pressurisation must fall within the values indicated in the table of the technical data.
Cooke Industries - Phone: +64 9 579 2185 Email: [email protected] Web: www.cookeindustries.co.nz
