The diagram shows how electricity is produced from coal.
Overall, the process has several stages, starting with mining coal and ending with supplying electricity to users. Gas is produced from coal before electricity is generated, and waste heat is released in some stages.
First, coal is taken from the mine and sent to a crusher, where it is broken into smaller pieces. After that, the coal is transported to a gasifier. Heat is added in this stage, and the coal is changed into gas. The gas then goes through a cooling process, during which waste heat is produced.
Next, the gas is cleaned to remove unwanted materials. Once the gas is clean, it is sent to a gas power plant. In this plant, the gas is used to produce electricity, and some waste heat is also released.
Finally, the electricity is delivered through power lines to factories and homes.
