Establishment of mathematical model for indoor particle pollutant concentration change and suggestions on the use of air filters

Abstract:
In this paper, a mathematical model of dynamic change of indoor particle pollutants under the action of room air filter was established, the influencing factors of pollutant concentration and removal rule were explained theoretically, and the selection and application suggestions of air filter were given. The results show that the room volume, the filter flow, ventilation rate, the filtration efficiency and natural attenuation rate of pollutants all affect indoor pollutant concentration. Among them, the greater the filter efficiency, filter flow, the better the indoor pollutant removal effect. The influence of ventilation is related to the pollutant concentration of the outdoor fresh air. When the outdoor air pollution is serious, natural ventilation will affect the work of the indoor filter, resulting in a poor pollutant removal effect. This model can provide reference for the selection and use of filters in daily life.