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Monoblock burners
Bi-blocks burners
Air vein burners
Operating principle of monoblock and bi-blocks burners
Fuel and air are injected into the combustion chamber where they mix and ignite in contact with the flame that they feed. The shape and the positioning of the flame in the furnace tube are of primary importance to:
optimise the heat transfer of radiation and convection and to achieve the highest possible efficiencies.
reduce NOx, CO and particulates emissions.
The burner operates with a small oxygen excess of 2 to 3% to ensure total combustion while minimising the thermal losses in the exhaust. In the range of use, the burner strikes a balance between minimising CO and NOx emissions and guaranteeing high combustion efficiency.
The combustion gases then pass through the heat exchange zones in the fire tubes or surrounding coils, depending on the technology, to ensure the designed thermal efficiency is achieved.
User advantages
reliability and robustness
;
total gas combustion
, for minimised CO generation;
shape of flame adapted to the boiler
optimising the heat transfer
(radiation and convection);
NOx levels
and exhaust gas figures derived from
actual operating conditions
;
electronic modulation of the combustion air fan to
increase efficiency
;
easy access
to the various components;
guarantee
extensions up to
6 years
;
modulation
range
up to 1:8
;
noise level
lower than
85 dB
at full power, improved to 75 dB by additional silencing;
stated fuel
consumption
;
minimal fouling
when used with viscous fuels.