Okay, why not do it?
Have vents into the street surface that contain turbines the blades of which are the diameter of the vent pipe.
When a subway train went by the vacuum and equalization pressure for and aft would turn the turbines. Of course they would have to be well maintaned and the distance between placements optimized. They would not even have to go all the way to the surface, in subways a horizontal shaft could be on top and parraleel with the train shaft. This would produce the same effect.
We need to think of more ways to produce electricity from the byproduct forces of our activities.
Thomas Paul Murphy
God Bless Those Who Think Of Better Futures
Originally Published on 09 17 2010 at: http://inventionsneeded.blogspot.com/
Copyright 2010 Thomas Paul Murphy
