This paper gives an overview of the EC NatVent (TM) project on 'Overcoming Technical Barriers to Low Energy Natural Ventilation in Office Type Buildings in Moderate and Cold Climates' which has been carried out under the European Commission Joule Programme 1994-98. The project was targeted at countries with low winter and moderate summer temperatures where summer overheating from solar and internal gain can be significantly reduced by low-energy design and good natural ventilation.
A new ventilated cooledbeam system concept with free cooling has been installed and monitored in a retrofitted office building in the Wartsila NSD Finland complex in Vaasa, Finland. Good indoor air quality and individual room temperature control has been achieved using ventilated cooled beams. Both cooling- and supplyair distribution functions were integrated in the same room unit. No extra costs were incurred for the low-energy system's freecooling loop.
Gives an overview of current developments into passive ventilation technologies within office buildings and their impact on current ventilation practices. Covers prevention of heat gains, modulation of heat gains, and heat dissipation.
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