The diagram illustrates the process of generating electricity from brown coal and black coal. The main required components are fuel energy, a power station, and towers for transportation and distribution.
Overall, it is a man-made linear process with multiple stages. It begins with the collection of fuel energy and ends with the consumption of electricity by consumers.
In the process of generating electricity from brown coal, 100 units of fuel energy are transported by truck or other vehicles to a power station. At the power station, 70 units are lost, leaving 30 units available. These 30 units are then transported to consumers using several distribution towers. However, an additional 3 units are lost during transportation, resulting in only 27 units reaching the consumer.
In contrast, the process of generating electricity from black coal begins similarly, with 100 units of fuel energy being delivered to the power station. Here, 68 units are lost, leaving 32 units available. After being distributed through the towers, 29 units finally reach the consumers. This shows that the energy generation from black coal is more efficient than that from brown coal.