Experimental study on relation between concentration of CO2 and occupant behavior in apartment housings

Taking three dwelling units in Beijing as example objects, based on the successive test data of the indoor environment parameters including air temperature, relative humidity, concentrations of CO₂ and CO, analyses the indoor air quality and the influences of the occupant behaviors such as occupancy, door /window opening and cooking on the indoor concentration of CO₂. The results show that the change of concentration of CO₂ can reflect occupant behaviors, and that door/window opening will improve the adverse impact of occupants on indoor air quality to a great extent.