3 of 7

Working of Steam Power Plant

4 of 7

�Coal and Ash Circuit�(This circuit handles the fuel input and waste output)��

Coal Delivery: Coal is transported from mines via rail, road, or conveyor belts.
https://www.youtube.com/watch?v=Lsu2-GoCMt8&list=PL-UwTla1PRj7_jLrFymeezkUEDCXP_L-n
Preparation: Large coal chunks are crushed into fine powder for efficient combustion.
Feeding: Pulverized coal is fed into the boiler furnace.
Combustion: Coal burns to release heat, producing ash as a byproduct.
Ash Handling: Hot ash is quenched, cooled, and transported to ash silos or disposal areas.
https://www.youtube.com/watch?v=v8VZhiqzEOM

��Air and Flue Gas (Exhaust) Circuit�(This ensures proper combustion and safe exhaust of gases)��

Air Supply: Fresh air is drawn in using forced draught fans.
Air Preheating: Air is heated using flue gases in an air preheater to improve efficiency.
Combustion: Preheated air supports coal combustion in the boiler.
Flue Gas Flow: Hot gases pass through the superheater, economizer, and dust collectors.
Exhaust: Cleaned gases exit through the chimney via induced draught fans.

�Feed Water and Steam Circuit�(This is the heart of power generation)�

Water Supply: Water from a hot well is pumped into the economizer.
Boiler Heating: Water is heated by flue gases and turned into steam in the boiler drum.
Superheating: Steam is further heated in the superheater to become superheated steam.
Turbine Expansion: Steam expands in the turbine, spinning it to generate electricity.
Condensation: Exhaust steam is cooled in a condenser and recirculated.

��Cooling Water Circuit�(This maintains the cycle by condensing steam back into water.)�