Enter the average pump power output (watts) and the run time of the pump (min) into the calculator to determine the Pump Energy. 

Pump Energy Formula

The following equation is used to calculate the Pump Energy. 

Epump = AP * T*60

Variables:

  • Where Epump is the Pump Energy (Joules)
  • AP is the average pump power output (watts) 
  • T is the run time of the pump (min) 

To calculate the pump energy, multiply the average pump power by the run time of the pump in minutes, then multiply by 60.

How to Calculate Pump Energy?

The following two example problems outline the steps and information needed in order to calculate Pump Energy.

Example Problem #1:

  1. First, determine the average pump power output (watts). In this example, the average pump power output (watts) is measured to be 50.
  2. Next, determine the run time of pump (min). For this problem, the run time of pump (min) is calculated to be 40.
  3. Finally, calculate the Pump Energy using the formula above: 

Epump = AP * T*60

Inserting the values from above and solving the equation with the imputed values gives: 

Epump = 50 * 40*60 = 120,000 (Joules)


FAQ

What is the significance of calculating pump energy?

Calculating pump energy is crucial for understanding the efficiency and operational cost of a pump over time. It helps in optimizing energy consumption, reducing operational costs, and ensuring the sustainability of pump operations.

Can the pump energy formula be used for any type of pump?

Yes, the pump energy formula can be applied to various types of pumps as long as you have the average power output in watts and the run time in minutes. However, the specific efficiency and operational characteristics of different pump types should be considered for a more accurate assessment.

How can I reduce the energy consumption of a pump?

To reduce the energy consumption of a pump, ensure it is correctly sized for its application, regularly maintain the pump and its components, use energy-efficient motors, and consider installing variable frequency drives (VFDs) to adjust the pump’s speed to the actual need, thereby reducing unnecessary energy use.