Jed Rothwell wrote: > > By the way, this "pipe" method works fine when the pressure difference is > between two locations at the same altitude. The air rushes from one > location to another, and you can tap the energy from it. That's called "wind." > Yep. OTOH. the drop from the ~ 2400 ft altitude of Tucson through a 100 mile long pipeline to the 1540 ft altitude of Phoenix would make a good hydropower source if Tucson would hook it's sewage system to it. The desserts would bloom in Phoenix too.
Fred > - Jed >
