Re: First run part two
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Great photos of your setup. Sure is a tall one !
> Total output was giving 250ml per min, I ran the system to the end atWell, 96% is as good as anyone can get - great result. At 250 mL/min with
> 25ml per minute,
> How do the figures mentioned above, in relation to still output and
> alcohol recovered, compare with theoretical results? IE how good is
> the system
6kW thats about a reflux ratio of 2 (eg you return 2mL for every 1mL you
keep). Thats fantastic - most people need RR=4 or more, and many run at
RR=10. Your advantage is the use of the 2m column - letting you keep the
high purity, but take it off at such a quick rate. At the end, 25mL/min is
RR=20, which for mortal (eg < 2kW) stills, is too slow to consider. But
your huge heat input handles it well, letting you stretch it right out to
Great to see that 67mm diameter handles the 6kW well - its the same ratio
that I used : 1800W/1.5", scaled up. Good to know that that rule-of-thumb
> possible misunderstanding TonyAhh ... thats why it took 11 hours.
> The total output of the still with valve fully open is 250ml per min,
> and i ran the system all the way through at an output of 25ml per
> min. Once i set the valve i left it through out at the same setting.
>I have a wee calculator at http://homedistiller.org/dtw.htm#use_fract which
> What i was wondering was if 250ml/min total output was too low for a
> 6kW input. The reason i ask is that i think I get some loses of
> distilate as it drops out of the 'funnel' below the cooling coil and
> into the collecting cup inside the still head. I may need to lower
> the initial 'funnel ' lower into the collecting cup.
does the maths.
For 6kW at 96% you'd be expecting more like 490 mL/min. I wonder if
you're losing a lot to the uninsulated walls of the column - condensing on
them before it gets all the way up. See if things change by insulating the
Next run, try a bit faster. That height & kW, I'd expect you to be able to
at least collect at 80-100 mL/min
> Next advance now i know the sizing works is to build it out of dairy
> stainless tubing, and a boiler from a jam making factory that I
> recently acquired.