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Selection
5 .2 Burner design
Selection of the burner size is dependent on the net heat output.
From this, the required burner output is calculated using the
firing efficiency value.
Net heat output [kW]
Firing
efficiency η
Determine the firing efficiency for the desired furnace tem-
perature using the diagram.
1
0,9
0,8
0,7
0,6
0,5
0,4
0,3
0,2
0,1
0
400 500 600 700 800 900 1000 1100
Flue gas temperature on recuperator inlet [°C]
ECOMAX · Edition 02.11
= Burner output [kW]
M
C
FTR
Cold air burner
1200 1300 1400
Recuperator
ceramic
Size
C
Ecomax 0
Ecomax 1
Ecomax 2
Ecomax 3
Ecomax 4
Ecomax 5
Ecomax 6
–
= available.
* For operation with natural gas. For operation with coke oven gas,
the output is approx. 80%, for operation with LCV gas, approx.
65%.
Precise dimensioning is available on request using the
ECOMAX calculation tool. For this, the following information
is required:
– Type of heating
– Furnace temperature
– Required net heat output
– Gas type
– Geometric furnace data (wall thickness, furnace extension,
clear width)
Burner
Output*
metallic
metallic,
flat tube
M
FTR
–
–
–
14
[kW]
25
36
60
100
180
250
500
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