Computational investigation of ventilation strategies to reduce exposure to NO2 and CO from gas cooking.

Gas cooking in the home can release high levels of nitrogen dioxide (N02) and carbon monoxide (CO). This study investigated the effect of various ventilation strategies to reduce personal exposure to these pollutants. It considered the effectiveness of windows, a kitchen extract fan and trickle ventilators for different dwellings, occupant behaviour, environmental conditions etc. Strategy selection was based on the need to minimise both personal exposure and energy loss. These strategies were simulated using BRE's BREEZE multi-zonal computer code. The results showed that it is best to: (a) use a window/ windows (where energy-loss acceptable) or a kitchen fan, and, (b) open all internal doors. However, whilst opening kitchen doors may be the best option for N02 and CO, it may not be appropriate for other combustion products, such as moisture and odours.