## Re: condenser

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• ... the world ... you in the ... It s an interesting concept, Kim. Let us know the results. As to working out the size, just calculate the hot/cold transfer
Message 1 of 23 , Jun 1, 2005
--- In Distillers@yahoogroups.com, "kiss my ass" <kiss_my_ass@c...>
wrote:
> Riku
>
> Your are right ..... I will try it and see..... all the theory in
the world
> won't replace actual hard testing..... of course theory will get
you in the
> ball park....
>
> if it doesn't work.... well I'll switch to the 1 in pipe.....
>
> Kim

It's an interesting concept, Kim. Let us know the results. As to
working out the size, just calculate the hot/cold transfer area.
IOW the outer surface area of the inside water pipe.

The crossflow has 19 pipes @ 140mm x 6.5mm Ø which is (in cm)...

Diameter x Pi x length x num.pipes
.65 x 3.14159 x 14 x 19 --> 543 sq.cm

This easily handles 1800w under test, and I'm sure it could do more
if the need arises. It's just a matter of increasing the coolant
flow. So to get something in that known range using a single
central pipe, just work backwards with the equation and plug in
figures...

543 = Diam x Pi x Length
543 = 3.8 x 3.14159 x ?
543 / (3.8 x 3.14159) --> 45.5 cm length @ 3.8 cm diameter
or 18" x 1.5" pipe
For 1.25" pipe it's...
543 / (3.2 x 3.14159) --> 54 cm length @ 3.2 cm diameter
or 21.25" x 1.25" pipe

You will also get a very small amount of cooling from the shell side
to atmosphere transfer, but in condensers this small it's not worth
calculating.

Slainte!
regards Harry
• Hi, I was just looking at some of the photos of stills in the photos section and I noticed a lot of people had caps on the top of the condenser casing. I am
Message 2 of 23 , Aug 14, 2005
Hi, I was just looking at some of the photos of stills in the photos
section and I noticed a lot of people had caps on the top of the
condenser casing. I am preparing my design and I had thought that that
part was supposed to be open to the atmosphere. Can anyone clear this
up for me?
• foutzdj wrote: Subject: [Distillers] condenser Hi, I was just looking at some of the photos of stills in the photos section and I noticed a lot of people had
Message 3 of 23 , Aug 14, 2005
foutzdj wrote:
Subject: [Distillers] condenser

Hi, I was just looking at some of the photos of stills in the photos
section and I noticed a lot of people had caps on the top of the
condenser casing. I am preparing my design and I had thought that that
part was supposed to be open to the atmosphere. Can anyone clear this
up for me?
===============
Yup. They should all have small vent holes in those caps, but that is not
always obvious from pics taken from the side. A cap like that is useful for
supporting the top condenser.

All the best,
Mike N
• Your supposition is correct but I am sure you will find that they just sit loosely and/or have holes in the top. They are not necessary - an open top is fine.
Message 4 of 23 , Aug 15, 2005
Your supposition is correct but I am sure you will find that they just
sit loosely and/or have holes in the top. They are not necessary - an
open top is fine. Mine is open but I have stuffed a SS scrubber down
into the top of my coil.

Cheers,
Lindsay.

--- In Distillers@yahoogroups.com, "foutzdj" <foutzdj@y...> wrote:
> Hi, I was just looking at some of the photos of stills in the photos
> section and I noticed a lot of people had caps on the top of the
> condenser casing. I am preparing my design and I had thought that that
> part was supposed to be open to the atmosphere. Can anyone clear this
> up for me?
• There is ALWAYS an opening in the cups or at the coil tubing entrance points. The opening should not be less than 1/4 diameter. With a properly sized
Message 5 of 23 , Aug 22, 2005
There is ALWAYS an opening in the cups or at the coil tubing entrance points. The opening should not be less than 1/4'' diameter. With a properly sized condenser coil there is no need for anything with the coil perfectly open to the atmosphere.

---------------------------------

[Non-text portions of this message have been removed]
• Alex, why 1/4 minimum? Not that it s relevant to me, but reasons give understanding. I should have thought any air gap was enough. cheers, Rob. ...
Message 6 of 23 , Aug 22, 2005
Alex,
why 1/4" minimum? Not that it's relevant to me, but
reasons give understanding. I should have thought any
air gap was enough.
cheers,
Rob.

--- "Alex _{*L*}_ (a.k.a. BOKAKOB)"
<bokakob@...> wrote:

> There is ALWAYS an opening in the cups or at the
> coil tubing entrance points. The opening should not
> be less than 1/4'' diameter. With a properly sized
> condenser coil there is no need for anything with
> the coil perfectly open to the atmosphere.
>
>
> ---------------------------------
>
>
> [Non-text portions of this message have been
> removed]
>
>

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• I use 1/4 drill bit for all tubing in my still columns. This is a logical extension to use the same drill bit avoiding any changes and cut time on labor. In
Message 7 of 23 , Aug 22, 2005
I use 1/4" drill bit for all tubing in my still columns. This is a
logical extension to use the same drill bit avoiding any changes and
cut time on labor. In theory you are correct, even a slight gap is
enough.

--- In Distillers@yahoogroups.com, Robert Thomas <whosbrewing@y...>
wrote:
> Alex, why 1/4" minimum? Not that it's relevant to me, but
> reasons give understanding. I should have thought any
> air gap was enough.
> cheers,
> Rob.
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