Indoor air purification using electrostatic fields without traditional air circulation

Abstract

Electrostatic air purification is typically based on air circulation through an electrostatic filtering system. In contrast, this study explores the direct removal of airborne particles from an emission source using electrically charged attraction panels. The charge relaxation of particles appears to be sufficiently long in low-humidity conditions, where dust and other charged particles are more easily released into the air. The results indicate that the method can be useful in environments where airborne particles are naturally charged and released, for example, by moving objects or people. Unlike conventional systems, electrostatic purification without air circulation requires minimal energy, making it a cost-efficient and suitable for environments with limited air exchange. This research includes airborne concentration tests and contamination experiments examining the effects of electrostatic fields on electrically charged panels, demonstrating the potential of this simple yet effective technology for various indoor applications.