Wood Vinegar Production Rate?

I'm just starting to make biochar in 45 gallon drum retort.
I've been directing all the gasses back into the fire to heat the wood but now I'm reading about wood vinegar.
I've seen a commercial operation and how the vinegar is condensed out of the smoke before other gasses go on to feed the fire.

My first question - how much wood vinegar is produced per given volume of biochar?
I'm burning mostly poplar saplings under 3" and tag alder branches about the same size.

More questions will follow.

Hey Bob, interesting angle! This is worth a thread of its own, so people can find it easily!

I have tweaked this post and turned it into its own thread! I hope someone has some insight to help you.

Bob, I haven't heard of wood vinegar. Although I know there are a crazy amount of compounds coming out of wood pyrolysis. An acid always has uses. What would you use it for? Very curious!