In North America, there are ~140 million homes and 4 million public buildings. More than one fifth of theenergy use in Canada is used to condition air whether from the cold in much of Canada or providecooling and heating where summers are hot and humid and winters are cold. To reduce greenhousegases and improve housing affordability, this energy use needs to be reduced. In 1981, the Federal andProvincial governments understood that science was needed to inform building codes in relation tooccupant health.
The aim of this Chapter is to break down barriers to concepts of natural ventilation. The study is part of a Pan European project titled NatVent that involves seven countries in the north of Europe. The project leaders are the UK Building Research establishment. Urban pollution is a major barrier to the adoption of natural ventilation, so successful ways of avoiding these problems need to be found.
For more than 1 year, indoor and outdoor O3, NO, N02 (NOx - NO), temperature, and relative humidity as well as the air exchange rate have been measured continuously at a commercial building in Burbank, CA. The indoor concentration of a given pollutant is a function of its outdoor level, the air exchange rate, the rate at which it is removed by indoor surfaces, and the rate at which it is produced or removed by indoor chemistry. Several examples of indoor chemistry are inferred from daily and seasonal variations in the collected data.
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