1. What is Flow Rate of 1 HP Pump?

Definition: This calculator estimates the flow rate (in gallons per minute) that a 1 horsepower pump can deliver based on pump efficiency, total head, and fluid density.

Purpose: It helps engineers and technicians determine the expected performance of a 1 HP pump under specific operating conditions.

2. How Does the Calculator Work?

The calculator uses the formula:

Where:

• \( Q \) — Flow rate (gallons per minute)
• \( \eta \) — Pump efficiency (dimensionless, 0-1)
• \( H \) — Total head (feet)
• \( \rho \) — Fluid density (pounds per gallon)

Explanation: The formula calculates how much fluid a 1 HP pump can move given the energy required to overcome the head and the pump's efficiency.

3. Importance of Flow Rate Calculation

Details: Proper flow rate estimation ensures pump selection matches system requirements, prevents underperformance, and optimizes energy usage.

4. Using the Calculator

Tips: Enter pump efficiency (typically 0.6-0.85), total head in feet, and fluid density (8.34 lb/gal for water). All values must be > 0.

5. Frequently Asked Questions (FAQ)

Q1: What is pump efficiency?
A: Pump efficiency (η) is the ratio of hydraulic power delivered to the fluid to the mechanical power input (typically 60-85% for centrifugal pumps).

Q2: How do I determine total head?
A: Total head is the sum of static head, friction losses, and pressure head in the system.

Q3: What's the density of water?
A: Water at 60°F has a density of 8.34 lb/gal (1 kg/L). Other fluids will have different densities.

Q4: Can I use this for pumps with different HP?
A: No, this is specifically for 1 HP pumps. Flow scales linearly with horsepower for similar pumps.

Q5: Why 3960 in the formula?
A: 3960 is a conversion factor that equates 1 horsepower to foot-pounds per minute divided by 8.34 lb/gal.