1. What is an LPG Gas Pipe Sizing Calculator?

Definition: This calculator determines the appropriate pipe size for LPG gas systems based on the gas load and maximum allowable velocity.

Purpose: It helps engineers and technicians properly size gas piping to ensure safe and efficient LPG delivery.

2. How Does the Calculator Work?

The calculator uses the formula:

Where:

• \( Size \) — Pipe diameter (inches)
• \( Load \) — Gas flow rate (BTU/hour)
• \( Velocity\ Limit \) — Maximum gas velocity (feet/second)

Explanation: The gas load is divided by the velocity limit to determine the minimum pipe size needed to maintain safe flow velocities.

3. Importance of Proper Pipe Sizing

Details: Correct pipe sizing prevents pressure drops, ensures efficient operation, and maintains safety by keeping gas velocities within recommended limits.

4. Using the Calculator

Tips: Enter the gas load in BTU/hour and the velocity limit (default 10 ft/s for LPG). All values must be > 0.

5. Frequently Asked Questions (FAQ)

Q1: What's a typical velocity limit for LPG?
A: For LPG systems, 10 ft/s is common, but consult local codes as limits may vary (typically 8-15 ft/s).

Q2: How do I determine the gas load?
A: Sum the BTU ratings of all appliances that will operate simultaneously on the piping system.

Q3: Does this account for pipe length and fittings?
A: This is a basic calculation. For long runs or complex systems, consider pressure drop calculations.

Q4: What about different pipe materials?
A: The calculation is material-neutral but always verify with material-specific sizing tables.

Q5: Should I round up the calculated size?
A: Yes, always select the next available standard pipe size equal to or larger than the calculated value.