Impact of Temperature on Electrostatic Precipitator Performance with Varying Electrode Configurations.

Abstract

To study the effects of temperature on electrostatic dust collectors, the electrostatic precipitator (ESP) of different electrode configurations is tested. By studying the effect of temperature on electric halo discharge and particle collection in the range of 450-900 K, under the premise of changing the number of discharge electrodes, different experimental conditions are analyzed. The following related data is compared and analyzed. By comparison of the electric field, flow field, and particle capture characteristics of the two dust collectors, it is proved that temperature is an important impact factor affecting the collection efficiency of electrostatic dust collector particles. The results demonstrate that as temperature increases, the operating voltage of the ESP decreases, and air density changes. This leads to a reduction in both the strength and spatial charge density of the electric field, thereby altering particle movement and, consequently, affecting the performance of the ESP. The particle collection efficiency decreases accordingly. Furthermore, the suppressive influence of higher temperatures on particle retention shows a positive relationship with particle diameter. The electrostatic precipitator, with its different electrode configurations, has a significant impact on particle migration velocity. It has been shown that as the number of discharged electrons increases and the electrode spacing decreases, both the average electric field strength and the space charge density of the ESP increase, which consequently affects dust collection efficiency. For example, the analysis of the different models revealed that the B model exhibited superior dust collection efficiency. Therefore, we can conclude that temperature is a crucial factor affecting the efficiency of static dust collectors with varying electrode configurations.