The presence of wall strengtheners in double-stage electrostatic precipitators affects gas velocity. electrical field and particle movement over the ESP. In this work we have used our previous mathematical model for double-stage ESP {Talaie et. al (2001) [10]] to study the effect of wall strengtheners on the performance of double-stage ESP. https://lecoureures.shop/product-category/ski-de-fond-accessoires-fixations-classic/