Casey, Wheldon's article discusses the traditional use of external quills on the
underside of a "pot-boiler". I was thinking about putting the quills internally in the
boiler
(through the center flue). The principle is the same -- increase the heat transfer
area --
but the application is sligh
lt;[EMAIL PROTECTED]>
Subject: Re: Cross-tubes and porcupine quills and such
Date: Fri, 02 Apr 2004 09:35:53 -0700
This conversation makes me wonder -- are their other ways to increase heat
transfer
without the complexity (and possibility for leaks) entailed with
cross-tubes? We know
that most o
o: Multiple recipients of sslivesteam <[EMAIL PROTECTED]> >Subject: Re: Cross-tubes and porcupine quills and such >Date: Sat, 03 Apr 2004 09:42:00 +0800 > >HI Vance and list. > >Vances suggestions are all valid - I would add the radiant gauze >idea which is also very effec
) entailed with
cross-tubes? We know
that most of the heat we generate goes up the stack rather than into the
water, so
anything we can do to grab some of it before it heats up the smokebox
would be
desirable.
The first thing that comes to mind is quills, like a "porcupine"
pot-boiler. Thes
ith a Stuart D10, it would make a very
>impressive boat model.
>
>Steve
>
>> -Original Message-
>> From:Geoff Spenceley [SMTP:[EMAIL PROTECTED]
>> Sent:Friday, April 02, 2004 9:50 AM
>> To: Multiple recipients of sslivesteam
>> Su
One process that has not been mentioned that I use when I build a cross tube
boiler is to flange the crosstubes once they have been put thru their
respective holes in the flue tube. This will increase the area that the solder
adheres to.
Bob
You need about 60" steam launch with a Stuart D10, it would make a very
impressive boat model.
Steve
> -Original Message-
> From: Geoff Spenceley [SMTP:[EMAIL PROTECTED]
> Sent: Friday, April 02, 2004 9:50 AM
> To: Multiple recipients of sslivesteam
> Subject:
I have a 5" x10" boiler (made in the UK) with a 1-1/2" center flue and
number of cross tubes, installed as Tag describes the Cheddar. It appears
to be a very well assembled and soldered boiler according to a friend who
is much more knowledgeable than me on boilers.
Haven'
This conversation makes me wonder -- are their other ways to increase heat transfer
without the complexity (and possibility for leaks) entailed with cross-tubes? We know
that most of the heat we generate goes up the stack rather than into the water, so
anything we can do to grab some of it
eat source. Properly
done cross-tubes should be a win-win propositon. Another benefit that's
forgotten is that cross-tubes increase the internal volumn, not by much of
course, but some, and that's more than you would have without them. I
could be making the mistake of assuming that peo
how until the boiler is completed and tested, and the leak
inaccessible. The second is having a leak develop after the boiler has
been in service for a while.
The former can be generally avoided by cleaning the flue tube and cross
tubes thoroughly before silver soldering, pickling thor
At 11:14 AM 4/2/04 +0100, you wrote:
>Hi Harry
>Long time no see - maybe I will make it to your neck of the woods next time
>:-)
Or me to yours, . . . . again. Is The Bridge still standing? :-)
Regards,
Harry
y thicker than standard soft
> copper plumbing tubing.
>
> Regards,
> Harry
Hi Harry
Long time no see - maybe I will make it to your neck of the woods next time
:-)
Cheddar boilers have several cross tubes. Without actually pulling one to
pieces so I can count them, they are all offset fr
roof as any other part of the boiler by giving a little thought to
the material used, location, and installation. I think cross tubes and
porky-pine heat sinks have a great potential for Ga1 which hasn't begun to
be utilized yet and coupled with the advances in burners can make ferocious
l
n be eliminated.
> Harry
I know some don't like to use them because they are difficult to repair
if a leak should occur but I was not aware there were other 'concerns' with
them?
I have seen Cornish style boilers equipped with smoke-tube cross tubes
(although they are
At 05:34 PM 4/1/04 -0600, you wrote:
>Hmmm, I was under the impression cross-tubes have been used succesfully for
>many years
>PeteH
Pete,
They have. Sometimes called "thermic siphons" (although a thermic
siphon is actually a specific type of cross tube), the "siph
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