1 kilowatt is 1 horsepower at normal electric motor eff. Hydrogen is only a couple pounds per cu feet even as a liquid at -420 degrees.
Glad to hear that you don't really disgree with my overall argument. Too many people accept what they are told by people selling stuff. Common sense usually will win.
1 kilowatt is 1 horsepower at normal electric motor eff. Hydrogen is only a couple pounds per cu feet even as a liquid at -420 degrees. Bear with me here, since 746 watts=1 HP, then 1000/746=1.34 HP ideally; efficiency losses brings us to between 1.5 and 2 HP depending on engine used and fuel efficiency.
One cubic foot of any liquid is 7.48 gallons, are you sure of your temperature for liquid hydrogen? I get -431(-257C) from Langes.