The provided diagram illustrates the sequential stages involved in the generation of electricity using coal as the primary fuel source. Overall, the process is a closed-loop system that transforms chemical energy into electrical energy through combustion, steam production, and mechanical rotation.
The process begins with coal being stored and then transported to a pulveriser, where it is ground into a fine powder. This pulverised coal is fed into a furnace, where it is burned to produce heat. This thermal energy is used to heat water within a pipe system, converting it into steam. The high-pressure steam is then directed towards a turbine, causing it to rotate.
Following the turbine stage, the mechanical energy generated is transferred to a generator, which produces electricity. This electricity is subsequently passed through a transformer to adjust the voltage before being transmitted across the national grid via power lines. Simultaneously, the steam used to drive the turbine is directed into a cooler, where it is condensed back into water and recycled back into the furnace to repeat the cycle, ensuring the efficient use of resources throughout the power generation process.