Particle deposition near ceiling induction outlets

The particle deposition on ceilings causing the soiling of induction outlets is mainly caused by the features of mixed ventilation.This paper offers a solution to the problem. The search for a clean outlet is made easier with the proposed optical and experimental technique that suggest to visualize the soiling patterns of an outlet by photographing deposited sodium chloride crystals. These tracer-particles stem from an atomizer and aerodynamically behave like the particles responsible for the soiling of ceilings in reality. Using image processing, suitable statistics describing the tendency of an outlet to attract particles can be derived from the pictures.