窗与油烟机距离对厨房污染物的影响

Investigated pollutant distributions under the condition of natural ventilation and different distance between window and extractor hood, so as to get an optimal distance. The CFD-fluent 6.2 software was used to simulate concentration distribution of pollutants in the different cases and compared with simulation results from the practical measure at the distance of 1.9m. Setting distance for 1.8-2.0m, it can reduce the pollutant concentration in the kitchen effectively, and pollutant concentration conforms to the specification. The simulation results of pollutant concentration indicate that the distance from window to extractor hood can have an impact on the emissions of pollutants. The increasing distance benefits kitchen air quality. However, the effect of the distance from window to extractor hood to diffusion is not obvious when the distance is at some degree.