Relativity of indoor and outdoor particle mass concentrations of infiltration ventilation rooms

Through the infiltration ventilation experiment in an airtight office room, analyses the hourly mass concentration distributions of indoor and outdoor cumulative and segmented particle size particles, and the correlation of indoor and outdoor particles with different sizes. The results show that the correlation values differ from different size zones, the value reduces with the particle size increasing,and there is no direct correlation with particles larger than 5 μm. The indoor and outdoor segmented particle size analysis can reflect the barrier performance of building envelope and indoor pollution characteristics.