Quote:
Originally Posted by All Darc
What is the efficience of this system of energy storage bellow ?
I don't know, but I bet it's very low. It loss energy during conversion to electricity, during pump's motor efficience loss, during conversion again to ellectricity when the water move bellow again moving turbines.
I bet it's not more than 30% efficient. |
You are way too low - it is 70-80% or more (including evaporation in an open system).
https://en.wikipedia.org/wiki/Pumped...mic_efficiency
Very similar principles, in systems like train cars on a slope, or weights in towers - would be even more efficient - about 85%:
https://en.wikipedia.org/wiki/Energy...h_solid_masses