11. Forced Draught Fan
Each unit has two forced draught fans. The fans draw warm air from the top of the boiler house through large air heaters becoming the primary and secondary air used for the boiler combustion process. The air heater warms the incoming air by transferring heat energy from the outgoing flue gases.
Pauline says...
Even in the winter the temperature of the top of the boiler house is in the 30s (°C), so we are making good use of hot air that would otherwise be wasted.
