Fine dusts, solid form of IAQ pollutants, can cause severe influences on human health due to the small size, huge surface area and the adsorptive characteristics for various harmful substances within the human respiratory organs. In this study, we tried to develop a technique and prototype to prevent indoor air pollution by removing fine particles from the surface using electrodynamic force. For this purpose, a 3-phased AC power generator with controlled voltage and frequency was applied to 3-electrode substrate for particle control tests, in which an activated carbon powders were used to simulate dust particles. As a results, first, the pitch pattern of the electrode substrate for the efficient generation of the electrodynamic force was found to be higher in the 3-electrode substrate than in the single electrode substrate and in the substrate having the narrow pitch in electrode. Second, the minimum voltage for the carbon powders to move from the surface of 3-electrode substrate were found 0.20 kV and the most efficient removal rate from the electrode substrate was 84.7%, as estimated through the image analysis when 0.50 kV and 0.96 kHz were supplied. As a result of analyzing the particle behaviors through the geometry selection of the electrode substrate using the EDEM, the results were similar to those of the lab experiments. Through these results and analysis, it is possible to reduce the pollution of indoor air quality by moving to a specific position where pollutants can be easily removed if operated with electrical force that matches the physical characteristics of particulate pollutants falling down to the indoor surface by the development system.
