Gas Pipe Flow Rate Calculator

Flow Rate Formula:

\[ Q = A \times v \]

Flow Rate (m³/s):

1. What is a Gas Pipe Flow Rate Calculator?

Definition: This calculator estimates the volumetric flow rate of gas through a pipe based on the cross-sectional area and gas velocity.

Purpose: It helps engineers, technicians, and HVAC professionals determine gas flow rates for system design and analysis.

2. How Does the Calculator Work?

The calculator uses the formula:

\[ Q = A \times v \]

Where:

\( Q \) — Volumetric flow rate (cubic meters per second, m³/s)
\( A \) — Cross-sectional area of pipe (square meters, m²)
\( v \) — Velocity of gas (meters per second, m/s)

Explanation: The flow rate is simply the product of the pipe's cross-sectional area and the gas velocity through that area.

3. Importance of Flow Rate Calculation

Details: Accurate flow rate calculations are essential for proper system design, ensuring adequate gas supply, and maintaining safe operating conditions.

4. Using the Calculator

Tips: Enter the pipe's cross-sectional area in m² and the gas velocity in m/s. Both values must be positive numbers.

5. Frequently Asked Questions (FAQ)

Q1: How do I calculate cross-sectional area?
A: For circular pipes, use \( A = \pi r² \) where r is the pipe radius. For rectangular ducts, use \( A = width \times height \).

Q2: What's a typical gas velocity in pipes?
A: Natural gas typically flows at 5-20 m/s in distribution systems, but always consult local codes for specific requirements.

Q3: Does this account for pressure and temperature?
A: No, this calculates volumetric flow rate. For mass flow rate, you'd need to factor in gas density which varies with pressure and temperature.

Q4: Can I use this for liquids?
A: Yes, the same formula applies to incompressible fluids like water, but not for compressible flow without additional considerations.

Q5: How accurate is this calculation?
A: This provides theoretical maximum flow. Actual flow may be less due to friction losses, fittings, and other system factors.