Water cooling
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When water falls from a higher place, it drives the blades to rotate; will the temperature of the water drop?
The process by which the falling water drives the blades to rotate is one in which the potential energy of the water is converted into mechanical energy; there is no heat exchange between the water and the blades, and the water does not cool down
So, if we want to lower the water temperature, are there any methods we can use, considering the internal energy of the water?