Analysis and effect validation of PM2.5 pollution prevention technology in a middle school classroom

The field measurement of a middle school classroom in Shanghai shows that there lacks effective mechanical ventilation, resulting in insufficient ventilation, high CO2 concentration exceeding the limit of standard and ineffective outdoor particulate pollution prevention. Through the comparison of the schemes, proposes a scheme of outdoor air purification system (OAPS) and implements an engineering transformation. The results show that the OAPS can effectively reduce the indoor PM2.5 and CO2 concentration level in the classroom and improve the IAQ.