Pump Efficiency Testing

Pump Efficiency Testing
Next to electric motors, centrifugal pumps are arguably the most common machine in the process industry and are major consumers of energy. Pumps are energy intensive and poorly performing pumping equipment can have a huge impact on your energy usage and costs. However, relatively little information is available on how hydraulic efficiency losses in pumps affects energy consumption and performance.

A large proportion of the pumps in service today have been installed for many years. During the time of operation they have probably undergone routine servicing or repairs and returned to duty, which is not an issue in itself. However; one of the basics of efficient pumping is that the pump is in the condition as it was originally manufactured. Unfortunately, over time wear takes place within the pump and the clearances start to increase, resulting in energy and hydraulic losses.

It is common to believe and is a misconception that efficiency improvements to a pumping system is generally achieved through increasing the efficiency of the drive motor, or by installing a variable speed drive. Though we accept that this is a way forward towards improving efficiency and reducing carbon, one of the main, and frequently overlooked considerations is the condition of the driven equipment, in this case, the pump. Replacing a motor for a higher efficiency motor or installing a VSD will prove worthless if the pump is worn and experiencing hydraulic losses.


Why Pump Testing?

Why Pump TestingPump testing is a low-cost starting point for asset and energy management. It provides a very cost-effective means of identifying pumps and systems that have the highest payback on maintenance or upgrade. Our services are designed to identify the health, performance and efficiency of your pumps. All efficiency testing is undertaken in accordance with ISO 9906

We compare collected data against the pump manufacturers benchmarked duty performance. We will plot pump curves to identify the best efficiency points and propose solutions that improve performance, energy consumption and life cycle. It is a wire to water efficiency test. As an example, an 85% efficient motor turning a 76% efficient pump gives you a real efficiency of 0 .85 x 0.76 = 0.65 or 65% efficient.


What do we measure and calculate?

  • Ultrasonic flow meter / water / portablePressure
  • Flowrate
  • Current
  • Voltages
  • Power consumption
  • Hydraulic losses
  • Carbon usage
  • Current condition compared with manufacturers specification
  • Payback options


Pump Efficiency TestingPump efficiency testing is ideal for:

  • Heating / boiler house pumps
  • Industrial process pumps
  • Borehole pumps
  • Split case centrifugal pumps
  • Pulp & Paper pumps
  • Marine pumps
  • Utility pumps
  • Or any system pumping water.


Benefits of pump efficiency testing

Maintenance by the numbers…you know exactly what it’s costing you to run.
Provides a non-intrusive snap shot of your pumps condition
You can trend or profile any differences over a period of time to measure wear and performance
You can use the data to improve or identify system efficiency savings to be made

Arfon Pumps provide on-site pump efficiency testing and diagnosis for pumping plant and associated control equipment, as well as pump repair and refurbishment services.