Completed Project: Contamination of Ceilings near Supply Air Diffusers


Around supply air diffusors mounted on the ceiling there can often be seen contamination of the ceiling with dust particles. These particles originate from the room air, not from the supply air. Together with TROX GmbH, the Institute for Energy Efficient Buildings and Indoor Climate has carried out experiments to examine the tendency for contamination of the ceiling in the near field of supply air diffusers. Main goal of the project was to develop a suitable measurement procedure for quantitative rating of the phenomenon. Furthermore, the procedure is going to be the basis for a future norm, which standardizes the evaluation of contamination behavior of ceiling diffusors.