Hi all, Yet another noob question from me... I been thinking of Solarthermal desalination plant lately but i'm surprised that no plan seems to take into account the possibility of letting the vapor rise to a much higher level, thus creating a potential energy source. Is there something obvious i am missing? Assuming that the ground is conveniently shaped and some thermally apropriate tubing, couldn't you allow this vapor to rise to a significant altitude? Thank you.