Replacing outdated motors and pumps for modern higher efficiency units is likely to result in energy efficiencies and cost savings as well as water efficiencies when the whole system is considered. Variable speed drive pumps adjust automatically to suit conditions, eliminating unnecessary water delivery to irrigation zones. This improves irrigation scheduling, avoids rootzone waterlogging and water wastage, and increases the potential for high production.
Additionally, small shifts from an IE3 (premium efficiency) to IE4 (super premium efficiency) pump can further improve power efficiency. Further advances in pump technology continues with Grundfos releasing an IE5 pump for applications up to 11kw. Grundfos estimate that increasing motor spec from IE3 to IE5 could result in 10 per cent extra energy savings. Read more HERE.
That saving in itself may not justify rushing out and replacing a motor as a standalone project but that if a motor needs to be replaced, increasing the spec to IE4 or IE5 will ensure significant savings and should be considered.
Payback periods, efficiency rates and energy savings differ for each application, we recommend viewing some case studies HERE relevant to your industry or if you’ve got a question you can email it to us at firstname.lastname@example.org if you require further information.