For some time hydro turbines have been with us, as to have steam and gas turbines.
Hydro turbines commonly are located on river or stream which have either been damed or the water fall over a cliff.
Steam and gas turbines are more locatable yet harder to make than a hydro turbine.
However in what may be a first is using steam or gas to to drive a hydro turbine has some uniquie features.
First is any forn of liquid that will boil off into a gas to provide the pressure force of liquid passing through a hydro turbine.
Second its the only turbine to capture equal and opposite force to drive a second turbine at the same force of the first one without a second input of energy.
This is acheived by having a gas force arriven by boiling liquid such as Co2 for its tremendous pressure to little heat and ideal behaviour of flashing into Dry -Ice to provide cooling to the hot gas return condensating into liquid.
Steam turbines need water heated to +550* Celsius to provide 175 bar pressure which is converted into 350 megawatts.
Carbon Dioxide liquid when heated to +100* Celsius provides 10,000 bar pressure which converts into 20,000 megawatts.
Other gases in liquid state when heated provide less and more pressure than Steam or Co2.
To save on need to develop a gas turbine specific to each form of gas it was thought best just to use the pressure of any gas .
The beast of gasses dont need heat from Carbon producing fires to develop pressure equal to or over and above Steam.
The attached have been released in Open Technology free to copy so others may copy without cost and help limit Carbon release.