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ECOMAX · Edition 02.11
14
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]
= Burner output [kW]
Firing
efficiency
η
Determine the firing efficiency for the desired furnace tem-
perature using the diagram.
400 500 600 700 800 900 1000 1100
0
0,1
0,2
0,3
0,4
0,5
0,6
0,7
0,8
0,9
1
1200 1300 1400
FTR
M
C
F
iri
ng
e
ffi
ci
en
cy
η
Flue gas temperature on recuperator inlet [°C]
Cold air burner
Burner
Size
Recuperator
Output*
ceramic
C
metallic
M
metallic,
flat tube
FTR
[kW]
Ecomax 0
–
–
25
Ecomax 1
36
Ecomax 2
60
Ecomax 3
100
Ecomax 4
180
Ecomax 5
250
Ecomax 6
–
–
500
= 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)
Selection