Large High Pressure Storage Tanks?
I am looking into a green power system but, I would need 4500 psi hydrogen tanks. They are way to small to be practical, even the large 144 c.f. ones (biggest I could find). Is there anything special about hydrogen storage tanks, or will any 4500 psi tank work, and does anyone know were to get big ones, like huge. If not, any ideas on how to fab one. I know a guy who is high pressure certified so he could weld it, but what thickness of metal is needed for say a 12" diameter tank about 10-15' foot long. (yea, that big)