AutoEngCalc - Engineering Calculators

Pressure Vessel Design

Perform ASME BPVC Section VIII compliant pressure vessel design calculations. Fast, accurate, and reliable tools for professionals and students.

Vessel: Diameter = 36 in, Thickness = 0.375 in
MAWP: 150 psi

Pressure Vessel Design Calculator

Perform calculations for wall thickness, capacity, separator design, and head design

Wall Thickness Determination

Calculate minimum required thickness for cylindrical and spherical shells under pressure

Vessel Capacity Calculation

Calculate volume and weight capacity for various vessel configurations

Separator Design Tools

Design two-phase and three-phase separators with sizing calculations

Head Design Calculator

Calculate dimensions and thickness for various pressure vessel heads

Calculation Results

Minimum Thickness

-

in

Nominal Thickness

-

in

MAWP

-

psi

Total Volume

-

ft³

Liquid Volume

-

ft³

Liquid Weight

-

lb

% Capacity

-

%

Diameter

-

in

Length/Height

-

ft

Gas Velocity

-

ft/s

Liquid Capacity

-

bbl

Minimum Thickness

-

in

Nominal Thickness

-

in

Crown Radius

-

in

Knuckle Radius

-

in

Diameter Length
Pressure Vessel Diagram (Simplified)

Pressure Vessel Design Methods

Wall Thickness Calculation

The wall thickness calculation follows ASME BPVC Section VIII Division 1 requirements for pressure vessel design. For cylindrical shells under internal pressure:

t = (P × R) / (S × E - 0.6 × P)

Where t is the minimum thickness, P is the design pressure, R is the inside radius, S is the allowable stress, and E is the joint efficiency.

Vessel Capacity Calculation

Vessel capacity calculations determine the volume and weight of fluids in various vessel configurations. For horizontal cylindrical vessels:

V = L × [R² × cos⁻¹((R-h)/R) - (R-h) × √(2Rh - h²)]

Where V is the liquid volume, L is the length, R is the radius, and h is the liquid height.

Separator Design

Separator design involves calculating dimensions for two-phase and three-phase separators based on flow rates, fluid properties, and retention time requirements.

D = √[(4 × Q) / (π × V × 3600)]

Where D is the diameter, Q is the gas flow rate, and V is the allowable gas velocity.

Head Design

Head design calculations determine the thickness and dimensions for various pressure vessel head types including hemispherical, ellipsoidal, torispherical, and conical heads.

t = (P × L) / (2 × S × E - 0.2 × P)

Where t is the head thickness, P is the design pressure, L is the crown radius, S is the allowable stress, and E is the joint efficiency.

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