Feasibility analysis on combination strategies of window ventilation and air cleaners in residential buildings under haze weather

Closing windows and turning on air cleaners are widely used as the means of purifying indoor air under haze weather in residential buildings, while the harm of closing windows continuously is always neglected. Simulates the concentration of PM2.5 and CO2 in residential buildings with air cleaners under haze weather when the windows are open in two different ways, i.e., full-time opening and short-time opening. The results show that the combination strategy of full-time opening with air cleaners can control the concentration of indoor pollutants under the moderate haze weather (200 μg/m3), and that the combination strategy of short-time opening with air cleaners can control the concentration of indoor pollutants in most of the time under the severe haze weather (300 μg/m3). Proper combination of window ventilation and air cleaners provides a convenient way to control the concentration of PM2.5 and multiple pollutants in residential buildings at the same time.