Journal of Engineering Research

High-Efficiency Particulate Air (HEPA) filters play a crucial role in controlling PM2.5. This paper explores the working principle of HEPA filters and their application effects in reducing the concentration of fine particulate matter in the air. Through experimental analysis, the performance of several different types of HEPA filters is evaluated, including key indicators such as their capture efficiency for particulate matter of different particle sizes, energy consumption, and service life. HEPA filters can not only significantly reduce the indoor PM2.5 concentration but also improve the air quality, providing a healthier environment for residents. Their effectiveness is affected by various factors, such as the design of the filter, the usage environment, and the maintenance situation. In practical applications, these factors need to be comprehensively considered to optimize the usage effect of HEPA filters. This study provides a theoretical basis and practical guidance for further improving air filtration technology.

High-Efficiency Particulate Air (HEPA) filter; PM2.5 control; Performance evaluation; Air purification