The graph illustrates how to produce electricity with using one type of coal.
Overall, , the process involves transforming coal into gas, treating the gas through cooling and cleaning stages, and eventually generating electricity at a gas power plant. Throughout the process, some waste heat is released.
Initially, coal is delivered to a crusher, where it is broken down into smaller particles. After that, the crushed coal is transported to a gasifier. There, heat is applied to convert it into gas. This gas is then directed to a cooling facility, which also emits some waste heat as a by-product.
Following the cooling stage, the gas undergoes cleaning to remove any remaining impurities. Once cleaned, it is sent to a gas power plant. In the final stage, the gas is burned to produce electricity, which is then supplied to industrial and public networks. Like the cooling stage, the power plant also releases waste heat during this process.
This system shows an efficient way of using coal to produce energy, though it still generates waste heat at multiple points.