Effets des paramètres atmosphériques sur la décharge couronne dans différentes configurations des précipitateurs électrostatiques

Abstract

The aim of this research project is to improve the performance of electrostatic precipitators (ESPs), devices widely used in industrial processes to treat particulate emissions. The main objective of this thesis is to study the influence of atmospheric conditions - mainly humidity and temperature - on the particle collection efficiency in different geometric configurations of electrostatic precipitators. Experiments have been carried out in the laboratory on model precipitators of the multipoint-two planes, and blade-planes types. Three types of particles of different sizes and densities were injected to evaluate the response of the devices under varying conditions. Analysis of the results revealed differentiated behaviours depending on the precipitator configuration and the atmospheric parameters applied. The results show that relative humidity has a strong influence on corona discharge formation and, consequently, on particle capture rates at. Temperature, on the other hand, affects air density and ion mobility, modifying the trajectories of charged particles, which has a direct impact on collection efficiency. Certain geometrical configurations proved more robust than others in the face of these environmental variations did.