BIO, BIOA, ZIO - Combustion 911

Selection
12
5.3 Burner head
The choice of burner head depends on the flame shape, gas type and variant.
Burner head
code letter
Furnace temperature
[°C]
Air temperature2)
[°C]
Flame shape
Control range Low fi re l λ1)
Continuous Staged
Normal R 1:10 1:10 > 1.05 0.8 to 1.3 50 to 350 20 to 150 4)
Long H 1:10 1:10 > 1.3 0.8 to 1.5 500 to 1600 5) 20 to 450
Flat K 3) – 1:10 > 1.05 0.9 to 1.2 50 to 100 4) 20 to 50 4)
1) Indicates the rough range for the max. connection rating. For precise values for the individual versions, see burner diagrams.
The ranges were determined for an ionization current of ≥ 5 µA. Extension of the working range using a UV sensor.
2) The gas fl ow rate should be reduced in accordance with the enthalpy gain of the preheated combustion air.
3) In conjunction with a burner quarl, for use as a radiant burner.
4) Higher temperatures available on request.
5) From a furnace temperature of > 1450°C, the control range is limited.
Gas type
Code letter
Calorifi c value range
[kWh/m 3 (n)]
Density ρ
[kg/m 3 ]
Natural gas L and H quality B 8 to 12 0.7 to 0.9
Propane, propane/butane, butane M 25 to 35 2.0 to 2.7
Propane, propane/butane, butane G 1) 25 to 35 2.0 to 2.7
Coke oven gas, town gas D 4 to 5 0.4 to 0.6
Low calorifi c value gas L 2) 1.7 3 to 3 0.9 to 1.15
1) For λ < 0.9 or when using the BIO 50.
2) Not for all burner sizes. Burner capacity is limited to 50 % of the rated capacity.
3) Calorifi c value range < 1.7 on request.
Variant Code letter Output
[kW]
Ignition lance L approx. 1.5
Reduced max. connection rating R –
BIO, BIOA, ZIO · Edition 05.10