I'm not so sure... What they are claiming is physically impossible. Steam yes... but increased pressure no. Water has certain properties that cannot be changed (pure water). Ie; boils at 212* sea level no matter how much heat you throw at it. Same for steam pressure. It will gain pressure as you increase power but there is a limit. There are actually charts that list the pressures/temps.
Now if you pull a vacuum all the temps lower Ie: boil point/steam transition points but I have not studied steam as a heat source. I am looking at vaporizing ethanol / water compounds at 104*f.
The idea came when I installed a polybutalyne pipe system on the roof of my house to pre heat water for the hot water heater. I found the AVG YEARLY temp of the water is 140*f with the summer months (
producing 160* constant supply. My water heater now became a buffer tank to lower the water temp to 115* (tap temp)
Those collection farms you linked to are in use but the main issue appears to be the amount of energy used is almost nullifying the energy produced. Basically a wash. (Pun for sure).
I also have ideas that can modify those farms as in auto magnetic tracking systems to follow the suns energy but I have never put pen t paper on the energy requirements.
I am looking more into producing ethanol as a fuel from infinitely renewable resources such as sugar/corn sorgum/ect... The secret ingredient is vacuum. The vacuum can be created by harnessing the differential in water temps, and using that natural circulation to power the venturi's that reduce the atmospheric pressure inside a completely new concept in concentric distillation columns.
Besides the power available from solar heated water I have designed a distillation column within a distillation column. The design is 1/2 the height of any other existing column (producing the same grade product), and it uses the heat energy from the inner/outer column to stabilize the temps of each other. Meaning the ambient temp losses are minimized while making the entire process 10 times more energy efficient.
The whole concept came about in researching petrol chemical distillation columns, and how they can be scaled down to produce Ethanol at home. Once I began to learn the concepts/formulas/design flaws of the current systems in use it began to snowball into an Edison moment. The light clicked on, and I submitted 8 months of development numbers to J&G engineering laboratories. They agreed to donate their software/time to run a simulation program of the columns'vacuum system, and the numbers proved out to 97%. Meaning the petrol chemical columns that run at 68-84% around the world have not matched the efficiency of the design I developed in just 8 months.
So to answer you question... What they are doing is not practical. Water is used without recovery, and the design produces around 13% return on energy.
I am returning 97%, and I am also producing a fuel that can be used in any form to power every existing vehicle on the planet. Plus there is NO loss of water. It is all recirculated./ recycled.
Not to shabby for a dead guy that eats mushrooms/weird seeds/smokes hippie grass (just to be able to sleep. Never during the day), raises killer dogs as house pets, and rides 50cc scooters in Carrabelle Fl..
Pm me for the digits