Lockyc wrote:If I turn the heat up too much it may puke/raise vapour speed/overcome the rc but I should get a better take off speed at a higher purity, is this correct.
How do you run your boka? Any tips?
It's more the ballacing act, the still will have different sweet spots for different washes
The diameter is whats going to give you the speed, provided the correct amount of power and reflux is used. The fractions have to separate out and slowly be drawn from the column, generally the faster you go the less abv you get and the fractions don't separate as well and you get smearing, a taller column separates better, so can run a bit faster.
Speed isn't everything, it's possible to pull 95% and have flavours come through, this is what would happen with too much power and subsequently too much reflux, upsetting the equilibrium of the fractions with too much movement up and down
I haven't run a boka, I have a small cm and a pot, the column balance theory applies to any reflux still. One tip that I haven't seen mentioned much here is to track the rc's coolant exit temp, just on/above 70c implies that your not overcooling the refluxed product and it thereby requires less energy to revaporise