Grundfos Demand Driven Distribution pressure management system

Demand Driven Distribution is a pressure management system that combines precise measurement of the network pressure and pump control at the pumping station according to these measurements. This avoids the issues that can arise with other systems that use, eg, pressure reducing valves. The system is said to reduce energy consumption, water loss from leakages and total water consumption.

The system measures the pressure in the network using a number of battery-driven data loggers that transmit the measured and logged values to the Demand Driven Distribution controller via the GSM network, using just one SMS per sensor a day. The measured data are then used in a smart adaptive control approach that controls the pumping station, keeping the pressure in the network at the desired value, without analysis and reconfigurations of the system to obtain proper operation.

To avoid the pumping station creating pressure transients, pressure ramping is carried out in the controller using the soft pressure build-up function. Other benefits of the product include comfort; reduced burst frequency; less maintenance in pipes network; water resource management; and less load on the wastewater treatment plant.