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• I knew that!!!!.....blanikdog :) ... From: Harry To: new_distillers@yahoogroups.com Subject: [new_distillers] Re: Brainteaser answer Date: Tue, 02 May 2006
Message 1 of 4 , May 1, 2006
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I knew that!!!!.....blanikdog :)

----- Original Message -----
From: Harry
To: new_distillers@yahoogroups.com
Date: Tue, 02 May 2006 01:38:43 -0000

--- In new_distillers@yahoogroups.com, "sonum norbu" <blanik@...>
wrote:
>
> Shit Harry, I hope I remember that for a future life. :))
> ......blanikdog

Heh, I thought that would get your attention.
The thing is, it also works in reverse, in that for the alcohol to be
cooled down, it must give up that heat. This means it's easy to
calculate how much heat needs to be removed per hour from a known
quantity of vapour produced per hour. (however you need to make
calcs
using the latent heat of vaporization for that). What can you do
with
the info? Design and build a condenser to remove that amount of
heat,
of course. No guesswork, no 'overkill'. Job done.

If you want 2 condensers in a VM still, 1 for reflux & 1 for product
condensing & cooling, you can use calcs to design for both. If you
want 1 reflux/product condenser in a LM still, just match your heat
source's output (BTU, or Watts) to the calcs for removing that heat
Then you can predict accurately how much juice you collect per hour
for any given reflux ratio and power input. How do you judge the
size/amount of the heat input? By calculating the amount of vapour
that input will produce, then calculating the speed of that vapour
volume in your proposed column diameter. Too fast? Either reduce
the
heat input, or get a bigger diameter column. This is what I mean
when
I say that designing stills is all a matter of balance. Done
correctly, power controllers, lots of coils/metal, big pumps etc
aren't necessary. Thus costs of building and operation are reduced
considerably.

If you're building a 'one-off' it doesn't matter so much, just follow
a known configuration that works. But if you're building as a
business, or building one from scratch by your own design, then cost
and/or rebuild to fix mistakes are real issues.

Slainte!
regards Harry

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