Torbay project adopts controlled natural ventilation

Torbay Project
Two Passivent systems deliver energy-efficient natural ventilation for the second phase of Torbay Innovation Centre.

A passive approach to ventilation for the second phase of the Torbay Innovation Centre in Torquay is contributing to the achievement of a ‘very good’ BREEAM rating. The 2-storey building includes about 30 lettable office units, meeting rooms and an exhibition area.

Two approaches to passive ventilation based on Passivent equipment are used. Passive stack ventilation is used on the north end of the building and single-sided ventilation at the south end.

In the north end, a single Aircool wall inlet ventilator draws fresh air into each of the offices. High-level grilles exhaust air into the corridor, and a combination of convection and the venturi effect ensure effective exhaust of air from the corridors through three Airstract high-capacity terminals on the roof. Acoustic attenuators modulate noise transfer from the offices to circulation areas.

In the south end, Aircool inlets at low level draw fresh air into the workspaces, and air is exhausted through high-level Aircool extracts in the general waiting area and 11 workspaces.

The whole system is managed by an EDC controller on each floor, at each end of the building, to ensure the whole achieves background ventilation equivalent to 400 mm2/m with an air-change rate of 10 l/s per person. The controllers monitor internal and external temperature and CO2 in each zone to modulate ventilation and minimise energy consumption.

For more information on this story, click here: Jan 09, 220
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