Orthogonal experiment of research on coordinated control method of indoor multiple pollutants

Indoor air pollution in office buildings is complex and serious. This research is targeted at three types of air pollutants: CO₂, VOCs, and PM_2.5. In order to seek the optimal control method to achieve good indoor air quality, an orthogonal experiment was carried out in the environmental chamber to compare the control time and energy consumption of four control methods (purifier+ and window+, purifier+ and window-, purified fresh air 240 m³/h and purified fresh air 400 m³/h) required for pollutants to meet the standard. The result shows that the purifier+ and window+ method is more effective in most conditions. Its control time is reduced by 8.06% and the energy consumption is reduced by 11.91% compared with the traditional control method of purified fresh air 240 m³/h. This research guides the optimization control strategy of indoor air quality under different pollution conditions in office buildings.

Calibrate the instrument. Close the doors and windows. Switch on all temperature, humidity, and IAQ sensors. Switch on the air purification equipment until the concentrations of CO2, VOCs, and PM2.5 are reduced to the lowest level. Then switch off the purifiers.