This is called a solar updraft tower (I like to call it a solar chimney): http://en.wikipedia.org/wiki/Solar_updraft_tower http://en.wikipedia.org/wiki/Solar_up

This is called a solar updraft tower (I like to call it a solar chimney): http://en.wikipedia.org/wiki/Solar_updraft_tower http://en.wikipedia.org/wiki/Solar_updraft_tower