Lots of knowlidge and experiances in the last few posts! Like where this is goeing.
I tested my cyclone before asembly, with a shopvac and ash, to be 95% effective. But its hard to judge actual gasflow.
Matt, l was thinking of a positive pressure system a lot lately, l know they were made in ww2, and your words inspire my thinking. Its all logical.
I was thinking of a positive pressure gas suply with a membrane automixer in reverse operation. Instead of suffocateing the air valve, it wuld meter pressurised gas. Much higher cyl filling ratios shuld be obtained, and counting all the bennefits of positive pressure you describe, it might be interasting to try.
It wuldnt be a wery hard thing to do, BUT, there is a big problem. Safety. A leak ina negative pressure system. No problem. A leak in a positive pressure sistem?
A question thugh. Once woodgas above dewpoint meets the 60% humid air, the humidity of the mix shuld fall considerably. But it is not lost, its just not in a liquid state anymore. Does this gaseous water not dilute gas?