energy_saved.m

%% Hydrogen Storage Tank 
%Type I
%Metal tank (steel/aluminum)
%Approximate maximum pressure, aluminum 175 bars (17.5 MPa; 2,540 psi), steel 200 bars (20 MPa; 2,900 psi).

%Type II
%Metal tank (aluminum) with filament windings like glass fiber/aramid or carbon fiber around the metal cylinder.[6] See composite overwrapped pressure vessel.Approximate maximum pressure, aluminum/glass 263 bars (26.3 MPa; 3,810 psi), steel/carbon or aramide 299 bars (29.9 MPa; 4,340 psi).

%Type III
%Tanks made from composite material, fiberglass/aramid or carbon fiber with a metal liner (aluminum or steel). See metal matrix composite.
%Approximate maximum pressure, aluminum/glass 305 bars (30.5 MPa; 4,420 psi), aluminum/aramide 438 bars (43.8 MPa; 6,350 psi), aluminium/ carbon 700 bars (70 MPa; 10,000 psi).

%Type IV
%Hydrogen tanks for the Toyota Mirai.
%Composite tanks such of carbon fiber with a polymer liner (thermoplastic). See rotational molding and fibre-reinforced plastic.
%Approximate maximum pressure 700 bars (70 MPa; 10,000 psi).[7]