RE: [Distillers] Re: Problem with my shotgun condenser
- I'll explain a little better what I mean with condensate on top since it
The cooling pipes inside my condenser are 8 mm outer diameter and 6 mm
inner. I got seven pipes. 15 cm tall and they stick out a little from
the top of the condenser so it is possible to solder them in place. On
top of the condenser is a reducer. So liquid can be trapped around the
pipes (bad construction) and then a pipe up, 90 degree bend, pipe, and
than a 90 degree bend downward and then a carbon filter (A small filter
is great to eliminate smell) The shotgun condenser is built that way to
make it possible to use it with power management and the vm cooler as
you say Riku. I want to check how much the condenser separate.
The bad thing with this that didn't cross my mind when I built it is
that on top of the condenser there may be a pool of condensate, not
directly from the vapour of the still but from the air at the top. Air
will be saturated with steam, no doubt, and the reducer thing will be a
little bit cooler than the shotgun condenser itself so it is possible
that small amount condensate in the reducer part and get stuck around
the cooling pipes at the top.
I'll add drainage to the top to see if makes any difference.
On the other hand I got small pipes in the condenser so that will
probably be the main concern. I'll keep it in mind Mike to use larger
pipes if I build a similar condenser. Cooling effect is good enough
Controlling power instead is alright, but I doubt it will work well
since I use circulating water. I'll try it, and also cooling management
with separate water flow for reflux and product.
On the other hand, if the vapour flow in the shotgun condenser is from
top to bottom instead it is possible to use small pipes without having
problem with chocking. 6 mm pipes should do fine. I believe that will
make the condenser very effective.
From: abbababbaccc [mailto:abbababbaccc@...]
Sent: Thursday, October 30, 2003 7:32 AM
Subject: [Distillers] Re: Problem with my shotgun condenser
If you allready have a reducer at the top and adjustable power source
why don't you make it a power management system? Use shotgun as a
reflux condenser that let's part of the vapors through and use your
VM condenser (if you still have it) to condense those vapors.
Operation is similar to spiral still with column although faster. If
necessary you can limit the cooling flow some reduce cooling
effectiveness. BTW, what diameter are the pipes in your shotgun
--- In Distillers@yahoogroups.com, "Johan" <mugg@h...> wrote:
> I was afraid of this, pity I really like the shotgun, it has great
> cooling capability and little water flow resistance.
> Reversing the vapour is one way, or one normal shotgun that doesn't
> all vapour and then a cooler back and returning the liquid, but that
> requires water flow adjusting, wont work well with circulating
> We'll see, I have to think of something. Advice are welcome.
> -----Original Message-----
> From: Mike Nixon [mailto:mike@s...]
> Sent: Thursday, October 30, 2003 3:18 AM
> To: Distillers@yahoogroups.com
> Subject: Re: [Distillers] Problem with my shotgun condenser
> Johan wrote:
> Subject: [Distillers] Problem with my shotgun condenser
> I have a problem with my shotgun condenser, head get stuck in the
> bleed back slowly in the condensate. I've wondered why it took so
> remove head.
> On top of the condenser I have a reducer and than a carbon filter to
> the still odourless. This may be a bad idea since condensate
> stuck on top of the condenser. Or in worse case scenario head
> inside the upgoing pipes.
> Because of the reducer on top I can block cooling water flow and
> hot vapour from the condenser, I did than and compared to the
> below the condenser.
> Below the condenser (the normal output) alcohol tasted slightly
> from the top it tasted much much worse. Especially ammonia. I
> I got pretty good from the top of the condenser, than waited, and
> worse again.
> I wonder if this happens in all shotgun condensers, or if it is just
> Anyone noticed this?
> A cooling management still shouldn't have this problem, have anyone
> any difference between different condensers?
> Hi Johan,
> I believe that this is a problem with all condensers that contain
> to be condensed inside a tube surrounded by coolant, as opposed to
> containing coolant and surrounded by vapor (eg. a conventional
> reflux condenser).
> The condensed liquid has to fight its way back against the vapor,
> be travelling quite fast if the shotgun tubes are small diameter,
> possible that heads that condense first may hang around for some
> they are finally washed down. A conventional helix will not have
> problem, although it may remain 'wetted' by heads for a while.
> the shotgun so that vapor is introduced at the top, so the liquid
> both travel downwards, might help, but it would make the assembly
> more complicated.
> It's not something I have encountered with VM, as the only vapor
> to the product condenser has first been stripped of the heads and
> product condenser remains 'clean'. Of course, a very tiny amount of
> that still adhere to the top condenser may well come across when you
> your main run, but the amount will be very, very much less than if
> collecting liquid that had been in physical contact with the top
> All the best,
> Mike N
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