Metallic Sodium as fuel

Metallic sodium is liquid at 97°C and today its cost is not very high(0.20 cents/lb) even if I think it needs a lot of energy; it reacts with water quickly heating it and this fact can produce a great... vapor pressure in a piston with cylinder.
To energy parity its volume is about that of coal but its weight is about that of oil, therefore it's leaster and greater(for the power that it can produce for its property) than other conventional fuels.

However surely it stores energy.......... Tweet