Experimental Study of an Electrostatic Spraying Process

Electrostatic spraying is a spraying technique in which particles or liquid droplets are electrically charged before being ejected towards target objects. This method is widely used in the application of phytosanitary products on the surface of agricultural products. Its objective is to improve the quality of the coating applied to the target objects by using electrostatic forces to direct and control the trajectory of the charged particles. This study focuses on the evaluation and quantification of the effects of specific factors in a laboratory electrostatic spraying device. A device was designed and implemented to assess the effects of the applied high voltage value (U) on the electrode of the spraying nozzle, the distance (D) between the spraying nozzle and the target object, and the spraying duration (t) on the quality and uniformity of the coating applied to the surface of a cylindrical object. An experimental design methodology was employed for this study. The results of this study demonstrated that the electrostatically charged sprayed product exhibited improved coating performance under specific conditions. The knowledge gained from this study contributes to a better understanding of the electrostatic spraying process and paves the way for optimization of this technique.