1. What is a Pipe Size Flow Rate Calculator?

Definition: This calculator determines the required pipe diameter based on the flow rate and 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)
• \( Q \) — 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 achieve a given flow rate at a specified velocity.

3. Importance of Pipe Sizing

Details: Proper pipe sizing ensures efficient fluid transport, minimizes pressure drops, and prevents excessive velocity that can cause erosion or noise.

4. Using the Calculator

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

5. Frequently Asked Questions (FAQ)

Q1: What's a typical flow velocity for water pipes?
A: For water, typical velocities range from 0.5-2.5 m/s, with 1.0 m/s being a common design value.

Q2: How do I convert flow rate from L/s to m³/s?
A: Divide liters per second by 1000 (1 L/s = 0.001 m³/s).

Q3: What if I need the diameter in inches?
A: Multiply the result in meters by 39.37 to convert to inches.

Q4: Does this account for friction losses?
A: No, this calculates theoretical diameter only. Actual systems may need larger pipes to account for friction.

Q5: What's the maximum recommended velocity?
A: For water, generally 2.5 m/s to prevent erosion and water hammer effects.