1. What is a Pipe Size Calculator Based on Flow Rate?

Definition: This calculator determines the required pipe diameter based on the flow rate and desired flow velocity.

Purpose: It helps engineers, plumbers, and designers select the appropriate pipe size for fluid transport systems.

2. How Does the Calculator Work?

The calculator uses the formula:

Where:

• \( D \) — Pipe diameter (meters)
• \( Q \) — Flow rate (cubic meters per second)
• \( V \) — Flow velocity (meters per second)
• \( \pi \) — Pi (approximately 3.1416)

Explanation: The formula calculates the minimum pipe diameter needed to maintain the desired flow velocity for a given flow rate.

3. Importance of Proper Pipe Sizing

Details: Correct pipe sizing ensures efficient fluid transport, prevents excessive pressure drops, and minimizes energy costs.

4. Using the Calculator

Tips: Enter the flow rate in m³/s and desired velocity in m/s (default 1.0 m/s for water). All values must be > 0.

5. Frequently Asked Questions (FAQ)

Q1: What's a typical flow velocity for water?
A: For water, typical velocities range from 0.5-2.5 m/s depending on application (lower for gravity systems, higher for pressurized).

Q2: How does pipe material affect the calculation?
A: Material affects friction loss but not diameter calculation. However, you should select standard available pipe sizes slightly larger than calculated.

Q3: Can I use this for gases?
A: Yes, but gas velocities are typically higher (15-30 m/s) and compressibility effects may need consideration.

Q4: What if I need the diameter in inches?
A: Multiply the result by 39.37 to convert meters to inches for nominal pipe size selection.

Q5: Does this account for friction losses?
A: No, this calculates minimum diameter. Always verify pressure drops match system requirements.