Keuken M P
Bibliographic info:
Netherlands, TVVL Magazine, No 9, 2001, pp 60-61, 1 fig, in Dutch.

When natural ventilation is being used, the quality of the air inside a building depends on the quality of the outside air. What is the outside air quality trend in the urban environment and what are the forecasts for the future? How is air quality measured and what are the expected European standards for outside air quality in 2010? The implications of these developments for the hybrid ventilation of buildings close to roads and motorways are explained.