AIR PURIFICATION USING ELECTROSTATIC PLATE AND COUPLED WITH DEHUMIDIFIER

Abstract

Air pollution and humidity are two major contributors to poor indoor air quality that adversely affect human health and comfort. This paper presents the design, fabrication, and performance evaluation of a hybrid air purification system that combines an electrostatic precipitator (ESP) with a dehumidifier to simultaneously remove particulate contaminants and regulate humidity. The proposed system employs a high-voltage electrostatic plate assembly to capture fine dust, smoke, and microorganisms through electrostatic attraction, while the integrated dehumidifier condenses and removes moisture from the incoming air stream. The experimental prototype was tested for particle removal efficiency, humidity control, and energy consumption. Results indicate that the hybrid system achieved 91% particulate removal for PM₂.₅ and 45–60% relative humidity reduction in a 20 m³ enclosed space within 30 minutes. The integration of dehumidification enhanced ESP efficiency by reducing dielectric breakdown of moist air and improving charge stability. The study concludes that the combined system offers a cost-effective and energy-efficient approach for improving indoor air quality in residential and industrial applications