1. What is Pipe Size Calculation from Flow Rate?

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

Purpose: It helps engineers and designers select appropriate pipe sizes for fluid transport systems.

2. How Does the Calculator Work?

The calculator uses the formula:

Where:

• \( D \) — Pipe diameter (meters)
• \( Q \) — Volumetric flow rate (cubic meters per second)
• \( V \) — Flow velocity (meters per second)
• \( \pi \) — Pi constant (~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 Pipe Sizing

Details: Proper 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 is typical for water). All values must be > 0.

5. Frequently Asked Questions (FAQ)

Q1: What's a typical flow velocity for water?
A: For water, 0.9-2.4 m/s is common, with 1 m/s often used as a design standard.

Q2: How does pipe material affect sizing?
A: Material affects friction loss but not diameter calculation. However, you'll select standard pipe sizes based on calculated diameter.

Q3: What about different fluids?
A: The formula works for any fluid, but velocity standards vary (e.g., gases typically use higher velocities than liquids).

Q4: How do I convert to pipe schedule sizes?
A: After calculating diameter, select the next standard pipe size (DN or NPS) that meets or exceeds your calculated diameter.

Q5: Does this account for pressure drop?
A: No, this gives minimum diameter. Always verify pressure drop meets system requirements for your specific application.