Deposition of aerosol particles on flat surfaces

Abstract

Results were erratic in experiments on deposition of aerosol particles on flat plastic and metal surfaces at 125, 390, and 730 cm sec −1 airspeeds. Uneven deposition and particle size separation was noticed over the collecting surfaces. Tests with sticky, antistatic, and untreated surfaces indicated that electrostatic effects play an important role in controlling deposition on both upper and lower surfaces of test plates, even in high air speed conditions. The average collection efficiency, therefore, does not represent the physical phenomenon and is misleading.