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This picture indicates a process how flow
of water could change to other energy, electricity by a hydroelectric power
station.
At first, water goes down to the high-level
reservoir through a river. This reservoir can flow at the day compared with the
situation of night because the dam does not let water go. Secondly, water flows
to generators which are machine that could make electricity. In the day, water
arrives at reversible turbines that decide to activate generator or not. Once
the turbines operate generator, energy of water becomes electricity in power
station. At the next step, this electricity is conveyed through power lines.
Finally, it reaches national grid, and then people could use this electricity
made of water.
In this diagram, there are significant
differences how to operate during the day or the night. When it is the day, water
could reach generator. It means that water could make electricity. Meanwhile, the
dam blocks the reservoir. It means that water could not make electricity compared
with the day. Furthermore, there is a difference how turbines work also. During
the day, turbines make generator operate to change the power of water to electricity
that people can use. On the other hand, turbines play a role to send water into
the reservoir in the night. |