In a thermal power
plant a fuel such as coal, natural gas, or oil is burnt to
boil water and make steam. The steam is used to turn a turbine
which is connected to a generator that make's electricity.
There are many systems
in a thermal power plant, lets start by considering the big
ones and how they work. The three systems that are of required
in any thermal power plant are a boiler, a turbine, and a
A conventional steam
electric power plant/power station converts fossil fuels -
coal, gas or oil - into electric energy. Fuel burned in the
boiler releases heat, which boils water and converts it into
high-pressure superheated steam.
The steam enters a turbine where it expands and pushes against
blades to turn the generator shaft to create electric current.
After the steam passes through the turbine, condensers convert
it to water, which is then returned by pumps to the boiler to
repeat the cycle.
Combustion gases exit through the stack.
This process is basically the same for all fossil fuels. A
stream of hot air carries coal, crushed to powder for easy
burning, into the boiler. Oil generally enters as a fine spray
of droplets in hot air.