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Exacta-Boost to meet increased airflow needs

A new solution for airflow ‘blackspots’ in buildings has been launched by Sensing Precision.

Exacta-boost can be retrofitted to existing ductwork systems of various dimensions to improve and control flow rates on a branch duct or to a critical area.

Post COVID re-commissioning of buildings has increased ventilation requirements with greater airflow and more filtration. Although a building’s HVAC system may have the theoretical flow, it may not have the pressure to overcome new filters and not be able to provide the required revised fresh air delivery across the whole building. Adjustments to air flow may mean potentially starving some areas of the building in order to meet critical flowrates in others.

Designed and built in the UK, Exacta-boost draws on Sensing Precision’s (SP) experience in automotive and aerospace test solutions. It uses the electronics and control algorithms used in those applications with either SP’s high accuracy Wilson Flowgrids or Eco Flowgrids paired to one or two high efficiency single phase EC Fans.

Installation is simple with just a mains spur required for constant volume applications. The PID Control DPTx Pressure transmitter will adjust the boost fans in real-time to maintain airflow, avoiding critical areas being starved of flow as demand varies across the building. This will also help the main AHU operate further up its flow curve whilst still maintaining AHU fan efficiency as it does so.

Exacta-boost can also be applied in variable volume systems when connected to a BMS. Energy savings are achieved as the set point target can be both changed and monitored in real-time in case of occupancy changes, or to allow night-time set back mode.

Andrew Hamshere, managing director, said: “If you have a site or space where you need a pre-calibrated high accuracy flow maintained and/or the main AHU/ventilation system which needs help, Exacta-boost is the solution.

“It offers a simple cost effective way back to normal building occupancy, giving your occupants/staff/visitors confidence that the flow rates and indoor air quality are being maintained when they are utilising your space.”

25 November 2020


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