Coal mine generator power station

a modern coal-fired power station.INTRODUCTION In South Africa, ost of the electricity comes from thermal power stations, fuelled by coal. Most of these coal-fired stations consist of six generating units. Each production unit has a boiler, and turbine that drives a generator as well as control and auxiliary support syst

Most modern coal-fired power stations burn pulverised coal in a boiler to raise steam for a steam turbine. High efficiency is achieved by using supercritical boilers made of advanced alloys that produce high steam temperatures and large, high-efficiency steam turbines.

The most popular type of coal-fired power station is a pulverized coal station that use coal ground to a powder using mills as fuel. The powdered coal is burnt in a boiler built from walls containing water tubes to collect the heat produced while other water tubes collect the heat in the flue gases exiting the boiler.

Note the two tall smoke stacks where the combustion products go into the atmosphere and the shorter, wider cooling towers. Coal fired power plants also known as coal fired power stations are facilities that burn coal to make steam in order to generate electricity. These stations, seen in Figure 1, provide ~40% of the world's electricity.

For these reasons, a description of electricity generation in coal-fired plant now follows. Modern coal-fired power stations are often, although not always, large in size, that is, 1–4 GW output.

the power station, the coal is pulverised to a fine powder in giant grinding mil . This is because pulverised coal burns quickly, like gas. The pulverised coal is transported to the boiler furnace wit air where it burns. Boilers, as high as a 35-storey office block, are the rectangular blocks that give power st