Pressure Vessels Wall Thickness Calculation

For Hydrogen pressure vessels:

Thickness = [Operating pressure (N/mm²) * Diameter (mm)] / [2 * (Design stress - Operating pressure)]

For stainless steel:

Design Stress = 165 N/mm²

Operating Pressure = (Absolute pressure - Atmospheric pressure) * 1.1

Absolute Pressure = 200 bar

Operating Pressure = (200 - 1) * 1.1 = 218.9 bar = 21.89 N/mm²

Thickness = [21.89 * 2000] / [2 * (165 - 21.89)] = 153 mm

Adding 1 mm for corrosion purposes: Thickness = 154 mm

For Oxygen Tank:

Applying the same methodology as above but substituting with:

Absolute Pressure = 30 bar

Diameter = 4000 mm

Thickness = [3.19 * 4000] / [2 * (165 - 3.19)] = 39.5 mm

Adding 1 mm for corrosion purposes: Thickness = 40.5 mm