I'm working on a generator to manufacture fuel from water. Breaking down the water molecule, we end up with two hydrogen atoms (fuel) and one oxygen atom (oxidizer). This is called HHO or Browne has, and has been used for about a century.
People seem to equate hydrogen gas with HHO, and this is incorrect. Hydrogen gas can be compressed into cylinders, and can be burned directly in normal internal combustion engines! HHO must Never be compressed, since it contains its own oxygen; and will diesel when it reaches the required pressure!
Here is an excellent comparison of both gasses:
This video shows how much energy is contained in a similar volume of gasses. Notice the increase in explosive force from the HHO gas. It is not popular for vehicle fuel, because it can Not be safely stored!
As a side note, in both gasses, the combustion exhaust is water vapor. Either gas combination is an excellent fuel. I have picked HHO, because it has a higher energy density; and HHO lends itself to my generator design.
I plan to use it to run a electric generator that normally runs on gasoline. Running on water for fuel makes a lot more sense for SHTF use, as gasoline will be in short supply.
Here is another homesteading use for HHO:
Heating with HHO is safer than heating with natural gas or propane, as it has no dangerous combustion by products! It is safe to burn inside an enclosed space.
Looking over this heater design, I see a few issues. I would add structure to hold a pan for cooking to give another use for this heater unit. When not cooking over this heater, I would invert several stacked clay pots for added heat radiation into the room. Placing a heat operated fan like they sell for a wood stove, on top of the pots; will circulate the heated air through the room!
I will post on the HHO generator design, as I put it together; in case someone wants to use it too.