Design and performance study of an outdoor air purifier to remove ozone

In order to reduce the content of ozone entering the room, this paper proposes an outdoor air purifier that can purify ozone. The glass fiber cotton loaded with manganese dioxide(MnO2) and copper oxide(CuO) is used as the filter material to reduce the ozone concentration and avoid secondary pollution. In order to evaluate the performance of the outdoor air purifier, the single-pass purification efficiencies under different background concentrations, filtration wind speeds and filter material usage times are measured, and the purification efficiency, flow resistance and quality factor under different filter material stack layers are compared. The results show that the four-layer filter material stack layers performs best, with a maximum efficiency of 75% under the background volume fraction is 75×10-9. The ozone purification efficiency is high within 6 weeks after replacing the new filter material, then the efficiency gradually drops and becomes no effect after 12 weeks.