Advantages of steam power plant

From Wikiversity
Jump to: navigation, search

Introduction[edit]

Steam/Thermal Power station

A steam/thermal power station uses heat energy generated from burning coal to produce electrical energy. This type of power station is widely used around the world.

This power station uses the Rankine cycle. This is the cycle of the steam produced in the boiler, then taken to the Steam turbine (prime mover). From the turbine the steam is cooled back to water in the Condenser, the resulting water is fed back into the boiler to repeat the cycle.

Because of the abundance of fuel (coal), this kind of power station can be used to produce large amounts of electrical energy.

In most countries these power stations are used as base load power stations. This is because steam power stations are slow to start and can not be used to cater for peak loads that generally occur for a short duration.

These power stations (together with nuclear power stations) are kept running very close to full efficiency for 24 hours a day (unless they are being maintained). They have typical life of 30 to 40 years (although most governments have reduced this number to 35 years).