1. Coal extraction: The first step in electricity production using coal is the extraction of coal from mines. This involves mining operations to access the coal deposits underground or through open-pit mining.
2. Transport and storage: After extraction, coal is transported to a storage facility, usually by trains or conveyor belts. The stored coal acts as a reserve for future use and to maintain a constant supply for the power plant.
3. Combustion in a boiler: The coal is then fed into a boiler where it is burned. The combustion of coal generates heat, which is used to convert water into high-pressure steam.
4. Steam generation: The heat from the burning coal is transferred to the water in the boiler tubes, causing it to evaporate and form steam. This high-pressure steam is used to turn the turbine blades.
5. Turbine operation: The steam flows through a series of turbine blades, causing the turbine to spin. The spinning turbine drives the generator, which produces electricity.
6. Cooling: After passing through the turbine, the steam is condensed back into water by cooling it with a coolant, such as water from a river or cooling towers. This condensed water is then recirculated back to the boiler to be heated again.
7. Electricity transmission: The generated electricity is then transmitted through power lines to various destinations, such as homes, industries, and businesses, where it can be used for various purposes.
Diagram of electricity production using coal in 7 steps class 7
1 answer
3 answers