ENERGY MANAGEMENT & SUSTAINABILITY
aspect of the project. For example, for a 37kW installation, we are looking at around 2,520 kg of embodied carbon for the duty/standby option, versus 1,214 kg (less than half) for two smaller parallel pumps.
The key to optimising the operation of two smaller pumps working together, is to specify integrated solutions, purpose- designed for parallel pumping (for example Armstrong’s new Tango range). This approach delivers considerable advantages in terms of energy efficiency, optimisation, ease of installation and system monitoring. Each Armstrong Tango solution, for example, features two pump heads with built-in parallel sensor-less pump control integrated as standard. This optimises hydraulic performance, providing 3% to 6% improvement in efficiency, whilst new high efficiency iECMTM permanent magnet motors provide another 2% to 7% efficiency improvement.
As Tango modules are supplied with the option of a blanking plate, maintenance can be carried out effectively on one of the pumps while the other remains in operation. Single pump operation continues to deliver 82.5% of capacity (based on a Tango module with 2 x 4kW motors each supplying 50% of the duty) while work is carried out.
Combined with the significant reductions in installation costs (for example removing the costs associated with inertia bases) this approach offers a much stronger lifecycle cost proposition. In addition, advanced wireless connectivity and on-board web services (provided as standard across the full product line) give greater visibility of operational conditions at all times, for peace of mind.
So to conclude, pump technology has advanced at a tremendous rate over the last decade. If the facilities manager thinks in terms of replacing ‘like for like’ pumps there will be, of course, an inherent improvement in energy efficiency. There is much more to be gained, however, by exploiting other valuable opportunities, such as the transition from full duty/ standby to demand-based parallel pumping, when investing in the building’s HVAC upgrade. This can help the facilities manager to improve return on capital, reduce building running costs, future proof the site, and minimise the building’s carbon footprint for improved environmental performance.
armstrongfluidtechnology.com
www.tomorrowsfm.com
TOMORROW’S FM | 29
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