DaS Energy for some years has been occupying its time in devolping new means out of old.
The most simpliest of these is a turbine active by use of any liquid inclusive of CO2.
CO2 giving the highest Kw output.
A one litre turbine heated 100*C rotating at 60 RPM provides 720 Kw, lesser heat lesser Kw down to an operaturing temperature of minus 10*C .
Wattage output is calculated by 1 litre flow per second at 9 bar prssure through the turbine produces 720 watts.
Other liquids including Ether and Ethonal require less strength of pipe.
The device including the turbine can be completely home built so long as one can cut and weld pipe.
http://i1225.photobucket.com/albums/ee397/DaSEnergy/DaSvalve.jpg