2. Enhanced flexibility for responsive operations
The AEV burner is a value-adding upgrade based on latest available technology. The original Alstom EV burners already set a high
performance standard, but the new AEV burner has taken operational flexibility, availability and reliability to the next level.
The AEV uses a continuously variable fuel staging system which completely removes the need for EV-typical switch-over and switch-
back between pilot and premix gas. This permits a wider operational range with acceptably low emissions.
During periods of low demand operators may not need to shut down, but have the ability to operate the gas turbine below 40% of GT
relative load while remaining fully emission compliant. Keeping the unit on-line at low load enables the operator to react instantly
at the first sign of increasing power demand. Furthermore, additional income may be generated from the ability to offer wider and
ancillary services such as spinning reserve.
This flexibility is a major step towards lower running costs, lower maintenance costs, higher availability and improved revenues.
With one less fuel gas control valve and a much simpler Fuel Distribution System (FDS), maintenance is reduced. Spare parts
management has also been streamlined. 48 identical burners replace the 72 left- and right-handed burners of the EV burner system.
EV burner configuration
with 72 burners
AEV burner configuration
with 48 burners and Simplified
Fuel Distribution System
3. Gas Service SOLUTIONS
GT13E2 AEV Burner
More effective for emissions control
The AEV burner allows reduced emissions at low load and low ambient temperatures.
Emissions BEHAVIOUR DURING fuel gas operation
The AEV is able to operate with consistently lower NOx
emissions down to below 40% GT relative load.
Low NOx operation at low load is a key benefit for plant operators
who want to benefit from a high spinning reserve and EOH
savings from reduced cyclic operation.
HIGHER PERFORMANCE IN COLD AMBIENT CONDITIONS
When the ambient temperature drops to below 15°C, the EV
burners typically required intake air pre-heating to keep NOx
emissions to a minimum. The new AEV burner allows operation
to lower ambient temperatures without the need for intake
Emissions BEHAVIOUR DURING fuel oil operation
When operating with fuel oil, the AEV NOx emissions are
compliant with most common market requirements from 50%
relative load upwards. Additionally, there is a low level of visible
emissions, even during transient conditions and at baseload.
REDUCED WATER CONSUMPTION
Another key advantage compared to the EV burner, the AEV
burner needs around 60% less NOx water for emissions
Relative load [%]
Current EV switch-over point40% GT relative load
Typical CO limit 80 ppm
GT13E2 with AEV burners: typical emissions
25 35 45 55 6040 65 75 85 95 105
Typical NOx emissions
Typical CO emissions
Typical NOx limit 25 ppm