1. What is a Pump Capacity Calculator?

Definition: This calculator determines the volumetric flow rate (capacity) of a pump based on the cross-sectional area of flow and the fluid velocity.

Purpose: It helps engineers and technicians size pumps and evaluate system performance in hydraulic applications.

2. How Does the Calculator Work?

The calculator uses the formula:

Where:

• \( Q \) — Pump capacity/flow rate (m³/s)
• \( A \) — Cross-sectional area of flow (m²)
• \( v \) — Flow velocity (m/s)

Explanation: The flow rate is calculated by multiplying the area through which the fluid flows by the average velocity of the fluid.

3. Importance of Pump Capacity Calculation

Details: Accurate capacity calculations ensure proper pump selection, system efficiency, and prevent issues like cavitation or insufficient flow.

4. Using the Calculator

Tips: Enter the cross-sectional area in square meters and flow velocity in meters per second. Both values must be positive numbers.

5. Frequently Asked Questions (FAQ)

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

Q2: What's a typical flow velocity for water systems?
A: Common velocities range from 0.5-3 m/s depending on application and pipe size.

Q3: Can I use different units?
A: Yes, but ensure consistent units (e.g., cm² and cm/s) and convert the final result as needed.

Q4: How does viscosity affect capacity?
A: Higher viscosity fluids typically require larger pumps for the same flow rate due to increased friction.

Q5: What if my system has multiple pipes?
A: Calculate capacity for each section separately, ensuring continuity of flow throughout the system.