1. What is a Gas Pump Flow Rate Calculator?

Definition: This calculator estimates the flow rate of a gas pump in gallons per minute (GPM) based on the pump's RPM and displacement volume.

Purpose: It helps engineers and technicians determine the performance characteristics of gas pumps in various applications.

2. How Does the Calculator Work?

The calculator uses the formula:

Where:

• \( Q \) — Flow rate (gallons per minute)
• \( RPM \) — Pump speed (revolutions per minute)
• \( D_p \) — Pump displacement (cubic inches per revolution)
• \( 231 \) — Conversion factor (cubic inches per gallon)

Explanation: The pump's displacement per revolution multiplied by its speed gives the total displacement per minute, which is then converted to gallons.

3. Importance of Flow Rate Calculation

Details: Accurate flow rate estimation ensures proper pump selection, system design, and performance evaluation in fuel delivery systems.

4. Using the Calculator

Tips: Enter the pump's RPM and displacement per revolution (in cubic inches). All values must be > 0.

5. Frequently Asked Questions (FAQ)

Q1: Why is 231 used in the formula?
A: 231 cubic inches equals 1 US gallon, which converts the displacement volume to gallons per minute.

Q2: What's a typical displacement for gas pumps?
A: Displacement varies by pump type, but common values range from 0.1 to 10 in³/rev depending on application.

Q3: Does this account for pump efficiency?
A: No, this calculates theoretical flow. Actual flow may be less due to volumetric efficiency factors.

Q4: Can I use this for other fluids?
A: Yes, but the formula assumes the fluid has similar properties to gasoline. For denser fluids, additional factors may be needed.

Q5: How does temperature affect the calculation?
A: Temperature affects fluid viscosity and pump efficiency but not the theoretical flow rate calculation shown here.