Controlled ventilation air flow through the core of a building. Ulkoilman hallittu sisaanotto ulkovaipan kautta.

At the HPAC laboratory of the State Research Centre, supply air tests were conducted partly with a supply air window, partly with a porous, 0. 1m thick insulation above the window. The best results were obtained with low supply air velocities allowing the air to flow down close to the outside wall. Thetests with a supply air window of about 1m*1m showed that an upward air-flow between the panes gave better results then down- flow. The air distribution was improved with a guiding vane in front of the air-flow holes in the window frame.