You wouldn’t drive your car at full speed at all times, why do it with the pumps in your system? Speed controlled pumps adapt the pressure after the current power demand. That saves energy.
It is common that you choose a pump according to highest imaginable flow requirement. But the flow is seldom or never that high during actual operation. The energy consumption can decrease just by controlling the speed of the pump so that it corresponds to the current flow requirement. There, a big profit can be made. The purchase cost of a pump is 1-5 percent of the total cost of running it.
The speed control (also called frequency control) of flow and pressure can pay off even with a motor of 20 kW. At higher pump powers the payback period is sometimes as short as one year for a speed controlled pump. Please contact us, and we will see what you can earn in your projects.