Thickness of Jacket Shell for Internal Pressure Calculator

Jacket Thickness Formula:

\[ t_{rj} = \frac{p_j \times D_i}{(2 \times f_j \times J) - p_j} \]

Design Jacket Pressure:

N/mm²

Internal Diameter of Shell:

Allowable Stress for Jacket Material:

N/mm²

Joint Efficiency for Shell:

Required Thickness of Jacket (mm):

Definition: This calculator determines the required thickness of a jacket shell surrounding a pressure vessel to withstand internal pressure.

Purpose: It helps engineers design safe and efficient jacketed pressure vessels for industrial applications.

The calculator uses the formula:

\[ t_{rj} = \frac{p_j \times D_i}{(2 \times f_j \times J) - p_j} \]

Where:

Explanation: The formula calculates the minimum thickness needed for the jacket to contain the specified internal pressure safely.

Details: Proper jacket thickness ensures vessel integrity, prevents leaks or ruptures, and meets safety regulations.

Tips: Enter all required parameters. Default joint efficiency is 0.85. All values must be positive numbers.

Q1: What is joint efficiency?
A: A factor (0-1) that accounts for the strength reduction at welded joints compared to base material.

Q2: Why include ±5% tolerance?
A: To account for material variations and manufacturing tolerances in real-world applications.

Q3: What's a typical allowable stress value?
A: Varies by material, but common carbon steel might have 120 N/mm² at design temperature.

Q4: How does diameter affect thickness?
A: Larger diameters require thicker jackets to withstand the same pressure.

Q5: What safety factors are included?
A: The allowable stress already incorporates safety factors based on material properties.