HFD - many thanks for the idea of comparing it to smoke precipitators. That's definitely a good analogy to concentrate the ideas on what the problem is like.
We were wanting to cope with these really tiny particles. Even 0.5 - 1 microns may be filtered by the best systems, but it's all the rest downwards in size that are worrying us.
Your details of the set up parallel our initial ideas, so we were heading in the right direction ! |