Steam coal, also known as thermal coal, is used in power stations to generate electricity. PCoal is first milled to a fine powder, which increases the surface area and allows it to burn more quickly. In these pulverised coal combustion (PCC) systems, the powdered coal is blown into the combustion chamber of a boiler where it is burnt at high temperature (see diagram). The hot gases and heat energy produced converts water in tubes lining the boiler into steam. The high pressure steam is passed into a turbine containing thousands of propeller-like blades.
The steam pushes these blades causing the turbine shaft to rotate at high speed. A generator is mounted at one end of the turbine shaft and consists of carefully wound wire coils. Electricity is generated when these are rapidly rotated in a strong magnetic field. After passing through the turbine, the steam is condensed and returned to the boiler to be heated once again. The electricity generated is transformed into the higher voltages (up to 400,000 volts) used for economic, efficient transmission via power line grids.
When it nears the point of consumption, such as our homes, the electricity is transformed down to the safer 100-250 voltage systems used in the domestic market.
is a nonrenewable energy which means that this is a type of energy that we cannot re-create. The supply of coal energy is limited and therefore if we continue to consume too much of this, we will eventually run out of this kind of energy. Coal energy is used for the creation of electricity to power industrial or manufacturing plants and even to power our appliances at home.
Many industrial plants or manufacturing plants use coal energy to generate electricity because coal energy is an affordable source of energy. Moreover, coal is very abundant even if it is non-renewable because it has the largest reserve around the world. There are many advantages and disadvantages of using coal energy to produce electricity. Its advantages and disadvantages are the following: The burning of coal is not environmental friendly because it produces harmful byproducts and gas emissions such as sulfur dioxide, carbon dioxide and nitrogen oxide that causes pollution to the environment including acid rain We cannot deny the fact that using coal energy is very important to us.
All of us want an affordable and reliable energy source which we can only get by using coal energy. Although using coal energy is very significant for us and living without it would become impossible, we should always open our minds to the damage the continuous use of coal energy will eventually bring to us and to our environment. For latest news on coal production, visit.