Why variable-frequency circulation pumps can reduce life-support energy use when flow demand, pump curves, control strategy and lifecycle economics are evaluated together.
Match flow to demand
Variable-frequency drives can reduce pump energy when system demand varies, but savings must be assessed against the pump curve, static head, minimum treatment flow, redundancy and control strategy.
Evaluate lifecycle value
A responsible study compares capital cost, expected operating hours, control limits, maintenance, energy tariffs and payback while protecting the biological and hydraulic requirements of the exhibit.
