Calculate tube sheet thickness in mm from correction factor, gasket diameter, design pressure, ligament efficiency, and allowable stress.
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How to Use the Tube Sheet Thickness Calculator
Use this calculator to estimate effective tube sheet thickness from the correction factor, gasket effective diameter, design pressure, ligament efficiency, and allowable stress. The displayed result is in millimeters.
Equation
T = (F × G) / (3)√((P) / (n × S))
T = tube sheet thickness, F = correction factor, G = gasket effective diameter, P = design pressure, n = ligament efficiency, S = allowable stress.
Inputs at a Glance
| Symbol | Meaning | Format / Units |
|---|---|---|
| F | Correction factor | Unitless |
| G | Gasket effective diameter | mm or in |
| P | Design pressure | bar or psi |
| n | Ligament efficiency | Decimal in the formula; 75% = 0.75 |
| S | Allowable stress | MPa or ksi |
| T | Calculated thickness | Shown in mm |
Calculation Steps
- Enter the correction factor F.
- Enter the gasket effective diameter G.
- Enter the design pressure P.
- Enter ligament efficiency n; if starting with a percent, convert it to a decimal for the formula.
- Enter allowable stress S and calculate T.
Example
| Input | Value |
|---|---|
| F | 1.0 |
| G | 400 mm |
| P | 25 bar = 2.5 MPa |
| n | 0.75 |
| S | 150 MPa |
T = (1.0 × 400) / (3)√((2.5) / (0.75 × 150))
T ≈ 19.88 mm
Quick Checks
- Keep pressure and stress in compatible units.
- If ligament efficiency is entered as a percent, convert it to decimal form in the equation.
- From the equation, larger F, larger G, or larger P increase thickness.
- From the equation, larger n or larger S reduce the required thickness.
