The new dust limits require a different type of dedusting, which is discussed in the paper. Addressed are extraction points, the effect on the in-house climate and the air balance. The right choice between wet and dry filter systems is another focus.

An extraction system is like a chain, the system only being as good as its weakest link. The following questions are answered: How do you create a stable system and how do you keep it intact in the long term? How do you proceed in the event of changes and what factors have to be taken into account?

You cannot extract dust and expect the internal air currents to remain the same, and therefore this point must be considered in the design.

The paper is an introduction to the dust problem and is intended to help make the right decisions.

Cyp Wagenaar, Mesys Air Systems BV, Netherlands