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my idea is for boating,would it be possible to have a boat that is powered with electric motors which are running on deep cell batteries? Yes it is possible, now what if you could use the water u are passing through to run a water mill of sorts.So as u go the water spins 3 reversed impellers that can alternate in recharging the batteries, my theory should work because the recharging comes from a seperate power source,that is not working off the main drive system.It would not be free energy but very low cost?
D.Hipple, Dec 01 2008
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The "water mill" imposes a drag on the propulsion system and therefore is powered by the drive propellor. No power is gained.
Ha very true,didn't see that at first thanks for commenting
But what if you were dragging a generator that used the actual movement of the waves? You would have increased drag on the boat, but you would also be drawing on the energy from the waves. You should have a net gain in energy, because it could generate power even when the boat is anchored.
I also looked into a drag system for an electric car that would have fans on the exterior to recapture the air to generate eletricity. The drag would require more energy to push. I like you idea but I think solar cells would be a better charging venue since typically a pleasure boat is out during nice sunny days.
I would also be concerned on how many batteries would be needed for a day at sea. The weight of the batteries could also cause drag and use more energy up.