MechChem Africa November-December 2020

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Intelligent water boosting systems for energy savings

Electricity costs are an increasing concern for owners and managers of buildings, and ensuring the right pressure and volume of water calls, not just for a reliable system, but for one that is energy efficient as well. External sales representative for Grundfos, Nick Pluck, explains how this can be achieved.

industrial facilities,” he adds. “This is where the Grundfos MPC booster systems offer enhanced value.” Known for their high performance and reliability, the Grundfos Hydro MPC booster systems also offer an advanced, intelligent cascade controller to further improve energy efficiency and ease of operation. “Over time, the CU 352 smart controller develops its own patterns based on its under- standing of a building’s daily requirements,” he explains. “It will register and remember how the water demand changes over the course of a day and ensure the pumps meet that demand without running unnecessarily when demand is low.” Equippedwiththiscontroller,theGrundfos ControlMPCcanmonitor up to six connected identical pumps, each driven by motors with variablespeeddrives(VSDs).“Weincorporate the VSD so that the controller and MPC can

change the speed of each individual motor based on the demand requirements,” he says. “A four-pump system, therefore, could have three pumps running at full capacitywhile the fourth runs at just 60%, saving energy while still meeting demand.” As the system’s algorithms calculate patterns, it can trim off waste energy con- sumption when less pumping is required. The controller can also alternate the starting sequenceofthepumps,resultinginmoreeven running time, and less wear and tear across the pumps. This allows more accurate and economical service planning and scheduling. High-efficiency IE3 motors further en- hance the Grundfos Hydro MPC’s energy efficiency while maintaining a constant pres - sure during changing flow demands. With a user-friendly interface, the systemsoffer ease of installation and commissioning, alongwith long-term value for money. q

Grundfos MPC, Nick Pluck.

“E nsuring the right pressure and volume of water in a build- ing today calls not just for a reliable system, but one that is also energy efficient,” saysGrundfos’ external sales representative, Nick Pluck. “Electricity costs are an increasing concern for owners and managers of buildings, and this is from residential and business blocks to hotels and

Left: The Grundfos Hydro MPB booster system offers an advanced intelligent cascade controller to improve energy efficiency. Right: The Grundfos Control MPC can monitor up to six connected identical pumps.

44 ¦ MechChem Africa • November-December 2020