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OCTOBER 08 - CONSERVING THE ENVIRONMENT

A natural approach to home design is helping optimise sustainability for a housing development on the edge of a Special Area of Conservation.

Passivent Passive Stack Ventilation has been chosen to air all the 17 three-storey townhouses in Chap Homes’ showcase The Quay Newburgh site on the edge of the Ythan estuary in Aberdeenshire- a new build project which attained finalist in the waterside development of the year category at the 2008 Scottish Home Awards. Neil Paterson of Chap Homes elaborates, “We have used Passivent over the years as an effective solution to minimising energy consumption within our developments. The main plus points to us are that it ventilates naturally, so saves energy as there have no extraction fans, and it makes no noise when operating, again because it has no fans.”

Passivent Passive Stack Ventilation (PSV) harnesses the concept of convection, in which warm air rises, and the venturi effect, whereby air pressure increases with height, to air the property. Internal warm, damp air rises and is extracted via roof terminals by air moving across the roof; fresh replacement air is drawn in through strategically located inlets at lower levels. Humidity sensitive extracts in ‘wet’ rooms such as bathrooms and kitchens open and close to preset levels to adjust ventilation as required. As a result, the system uses no electricity, nor has need for noisy mechanical extract fans.

BBA certified Passivent PSV is just part of the range of ventilation solutions to minimise energy consumption available from the company. In addition to PSV, Passivent supplies its BBA certified Assisted Ventilation (A/V) systems for multi-occupancy buildings, tricklevents, the Fresh range of through wall ventilators, plus ‘whole house’ natural (PIV) and mechanical (iMEV) ventilation solutions, with or without acoustic options. All of these contribute towards efficient ventilation of the home with little or no energy consumption. Passivent is part of the Building Product Design Group, which specialises in developing innovative yet practical ventilation and roofing products in line with changing market requirements.

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