1. What is Pump Efficiency?

Pump efficiency (η) is a measure of how effectively a pump converts input power into useful output power. It represents the ratio of hydraulic power output to mechanical power input, expressed as a percentage.

2. How Does the Calculator Work?

The calculator uses the pump efficiency formula:

Where:

• \( \eta \) — Pump efficiency (%)
• Output Power — Useful hydraulic power delivered by the pump (kW)
• Input Power — Mechanical power supplied to the pump (kW)

Explanation: The formula calculates the percentage of input power that is effectively converted into useful output work.

3. Importance of Pump Efficiency Calculation

Details: Calculating pump efficiency is crucial for energy conservation, cost savings, system optimization, and identifying maintenance needs in pumping systems.

4. Using the Calculator

Tips: Enter both output power and input power in kilowatts (kW). Both values must be positive numbers greater than zero for accurate calculation.

5. Frequently Asked Questions (FAQ)

Q1: What is considered good pump efficiency?
A: Good pump efficiency typically ranges from 70% to 90%, depending on pump type, size, and operating conditions.

Q2: Why is my pump efficiency low?
A: Low efficiency can be caused by wear, improper sizing, cavitation, mechanical issues, or operating outside optimal conditions.

Q3: How can I improve pump efficiency?
A: Regular maintenance, proper sizing, speed control, system optimization, and replacing worn components can improve efficiency.

Q4: What units should I use for power measurements?
A: Use consistent units (kW recommended) for both input and output power to ensure accurate efficiency calculation.

Q5: Can efficiency exceed 100%?
A: No, efficiency cannot exceed 100% as it would violate the law of conservation of energy. Values over 100% indicate measurement errors.