The generating station which converts the heat energy produced by the combustion of coal into electrical energy is called Steam Power Station or Thermal Station.

A steam power station mainly works on Rankine cycle.In steam power station steam is produced by the combustion of coal and hence producing steam from water in the boiler.The steam is then made to expand in the prime mover and then it is condensed using a condenser to feed back it to the boiler again.The steam turbines rotates due to the impact of the steam on its blades and this sets the coupled alternator in motion which converts mechanical energy into electrical energy.This type of stations are constructed where surplus amount of coal and water is available and the power requirement is very large.

Advantages of Steam Power Station

1. The fuel used for power production is cheap(coal).
2. The initial cost is less compared to other type of generating stations.
3. it can be installed at any place since it is easy to transport coal.
4. requires less area compared to that of hydro electric power stations.
5. The production cost is cheaper compared to that of diesel power stations.

Disadvantages

1. it produces smoke and fumes which pollutes earth atmosphere.
2. The running cost is high compare to that of hydro electric power stations.

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