New water power, 'reverse" archemedes screw from Germany and gravitational vortex from Austria Answered
I think the gravitational vortex is a few years old and I only found the Reverse Archemedes Screw yesterday.
Would anyone like to do instructables on them? It seems both are attempts to make hydroelectric power a bit more fish friendly. They say the reverse archemedes screw is very efficient too.
Check them out and see what you think. I put videos about them in this playlist
While I am here, why do the screws shown not have the auger and shell of the screw all welded together? Perhaps it is just for cleaning reasons? Or maybe it is just too difficult to make a "spiral staircase" inside a pipe?
Anyway, it looks like excellent projects for someone. The reverse archemedes screw is totally new to me.
I have seen videos of the austrian system before.
If they are fish friendly, lets make them popular. One question, how do the fish migrate up the river?