Experimental Study on PM2.5 Purification Characteristics of Different Filter Units in Enclosed Environments

Many epidemiological studies have shown that long-term exposure to high PM2.5 concentrations can significantly increase the morbidity and mortality of different diseases. Air cleaners are effective in removing PM2.5. In present research, filter units were tested determine their filtration efficiency. The face velocity was adjusted 50%, 75%, 100%, 125%, 150% corresponding rated airflow. single-pass efficiencies, resistances, cleaning efficiencies simultaneously measured on every filter. order clean air delivery rate (CADR) energy efficiency (CEE) units, we designed a specific cleaner replace test chamber. Our results showed effectively remove electrostatic structure precipitators (ESP) intense field dielectric (IFD) close those sub-high glass fiber this case, decreased when wind speed increased, whereas did not . Even with able quickly fine particles, highest CADR CEE values obtained IFD used. contrast, medium displayed smallest values. about 48.3% 51.4% cleaner. study provides relevant data will be useful pandemic prevention control reduce risk infection enclosed environments.