Improving comfort and ventilation — naturally

Passivent, natural ventilation, Airscoop, Airstract
Energy-efficient building and ventilation — Passivent’s RAD Airscoop and Airstract systems.

Passivent’s Airscoop natural-ventilation system installed on a building in Co. Antrim has made a major contribution to it having one of the lowest measured internal carbon-dioxide levels in the region, according to independent testing. This experience and claims for Passivent’s Airscoop system are reinforced by independent research by BSRIA; its study on wind-driven natural-ventilation systems (BG2/2005) shows that roof-mounted ventilation will deliver good comfort conditions with low energy consumption and avoid overheating.

Passivent also refers to statistics that show that some 30% of employees working in air-conditioned offices suffer from sick-building syndrome, with risk factors including poor levels of insulation, poor air quality and low humidity — factors that may worsen with the stricter requirements for air tightness in the latest Building Regulations.

Passivent’s remote air dispersal (RAD) Airscoop unit naturally ventilates the building to ensure a flow of fresh air into the office environment. Its design enables ceiling-mounted diffusers to be repositioned if the office layout changes.

Energy consumption is said to nearly halved compared with air-conditioned buildings and capital costs reduced by about 15%. The need for air conditioning can be reduced or eliminated.

One benefit of the system is that is can run overnight to cool the building.

For more information on this story, click here: April2011, 137
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