25442Re: Reflux Column Condenser Question
- Dec 4, 2007VM is different from the offset head/valved, or a Bokabob slanted plate design, (which are
both liquid management, or LM, and are good designs). VM has an inline reflux condenser
at the top of the column, and a product arm with a gate valve in it coming off just above
the packing, that feeds vapour into a Liebig. VM can usually be added to a offset head/
valved, or a Bokabob slanted plate design, it just requires adding a 3/4 or 1" threaded
fitting to the column in the right place (just above the packing), and attaching a gate valve
and a condenser.
I have a VM column, it works very well, is very easy to use, and cleaning the inside of the
column is a breeze cause it is just a hollow tube. I have not tried a CM or LM column.
You can see photos of my column here:
--- In email@example.com, "rye_junkie" <rye_junkie@...> wrote:
> Thanks for the reply Morgan. Being new to the reflux idea I will
> assume that CM is controlling your reflux by the amount of coolant
> used and VM is more on the lines of a where
> the vapor is condensed in the still head and by valve control,
> distillate is diverted either back in the column(refluxed) or into a
> collection container. You pretty much answered my question with your
> short answer. However you have caused me to do some more research and
> I am now considering the offset head design such as the one described
> in smileys book "making pure corn whiskey".
> My original intent was to build a column similar to the essential
> extractor design from Brewhaus. Who knows where this will end now.
> --- In firstname.lastname@example.org, "morganfield1"
> <morganfield1@> wrote:
> > Hi Mason,
> > The short answere is, criss cross cooling tubes will condense more
> > vapor per inch than cooling tubes around the "outside" of the column.
> > But for a complete answere, we need more information, such as, what are
> > ou trying to build? You say you want to "use the liebig you currently
> > have", which suggests you are aiming for a CM rig, or a VM rig. I have
> > never used a vapor management still, but I have heard praises from many
> > who have, well worth the effort to build. I have built and used a
> > coolant management rig, and I can tell you, they are very finicky. HTH
> > Tip one, Morgan
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