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<DIV><FONT size=4>Fins/ pegs/ pot shells/ rocket pots.</FONT></DIV>
<DIV><FONT size=4>If you are going to use fins they should be attached to a
pot skirt that fits snug and stays on the pot until it needs to be
cleaned. This keeps the soot if any contained and away from the
cook.</FONT></DIV>
<DIV><FONT size=4>Instead of a fin shell I am now using a "pot shell" that
totally encloses the pot. The pot shell has a top tray that can be easily slid
back for easy access to the pot. This is actually easier that removing a
lid and another benefit with total enclosure is the pot is heated from the
top as well as the sides and bottom.</FONT></DIV>
<DIV><FONT size=4>The top tray can also dry wood and warm food items.
</FONT></DIV>
<DIV><FONT size=4>Another benefit of the pot shell is that it makes cooking in
the rain possible.</FONT></DIV>
<DIV><FONT size=4>The construction is very simple and it can be built from most
any material that is non combustible.</FONT></DIV>
<DIV><FONT size=4>A section of drum fits over a 40 qt sauce pot or a 60 qt stock
pot. The pot handles may have to be bent in a little or the pot shell can be
slightly oval to fit over the handles.</FONT></DIV>
<DIV><FONT size=4>A pot shell requires a flat top stove body or a burner under a
flat surface.</FONT></DIV>
<DIV><FONT size=4>I believe the pot shell is the biggest bang for the buck
to improve a stoves performance. They are cheep and easy to build. They add
draft without allowing too much, they capture the heat, and allow cooking
outdoor in the rain.</FONT></DIV>
<DIV><FONT size=4>If the pot shell design helps your stove, run with it,
and that goes for everyone.</FONT></DIV>
<DIV><FONT size=4>I will have a video later today showing its
use</FONT></DIV>
<DIV><FONT size=4>Lanny</FONT></DIV>
<DIV><FONT size=4></FONT> </DIV>
<BLOCKQUOTE
style="BORDER-LEFT: #000000 2px solid; PADDING-LEFT: 5px; PADDING-RIGHT: 0px; MARGIN-LEFT: 5px; MARGIN-RIGHT: 0px">
<DIV style="FONT: 10pt arial">----- Original Message ----- </DIV>
<DIV
style="FONT: 10pt arial; BACKGROUND: #e4e4e4; font-color: black"><B>From:</B>
<A title=deankstill@gmail.com href="mailto:deankstill@gmail.com">Dean
Still</A> </DIV>
<DIV style="FONT: 10pt arial"><B>To:</B> <A
title=stoves@lists.bioenergylists.org
href="mailto:stoves@lists.bioenergylists.org">Discussion of biomass cooking
stoves</A> </DIV>
<DIV style="FONT: 10pt arial"><B>Sent:</B> Sunday, July 28, 2013 11:36
AM</DIV>
<DIV style="FONT: 10pt arial"><B>Subject:</B> Re: [Stoves] Cajun Rocket Pot/
capacitive discharge stud weldie</DIV>
<DIV><BR></DIV>Hi Lanny,
<DIV><BR></DIV>
<DIV>We tested a couple of pots with fins but the space between the fins
clogged up quickly with soot, a good insulator.</DIV>
<DIV><BR></DIV>
<DIV>Best,</DIV>
<DIV><BR></DIV>
<DIV>Dean<BR><BR>
<DIV class=gmail_quote>On Sun, Jul 28, 2013 at 5:21 AM, Lanny Henson <SPAN
dir=ltr><<A href="mailto:lannych@bellsouth.net"
target=_blank>lannych@bellsouth.net</A>></SPAN> wrote:<BR>
<BLOCKQUOTE
style="BORDER-LEFT: #ccc 1px solid; MARGIN: 0px 0px 0px 0.8ex; PADDING-LEFT: 1ex"
class=gmail_quote><BR>
<BLOCKQUOTE
style="BORDER-LEFT: #ccc 1px solid; MARGIN: 0px 0px 0px 0.8ex; PADDING-LEFT: 1ex"
class=gmail_quote>Lanny have you seen capacitive discharge stud
welding?<BR></BLOCKQUOTE><BR>Yes I have a stud welder but I did not realize
it would weld dissimilar metals especially aluminum to anything
else.<BR><BR>Stud welding is very finicky and will leave a blemish on the
opposite side of thin metal.<BR><BR>When a stud weld fails you have to grind
the surface to clean it up before rewelding.. How are you going to do that
if it is between the other studs?<BR><BR>Attaching studs, fins or anything
to a pot is going to be problematic, but attaching something to the pot
holder may be practical. The heat transfer may not be as good as having
something attached to the pot but it could possibly improve the heat
transfer.<BR><BR>Lanny Henson<BR><BR>----- Original Message ----- From:
<<A href="mailto:ajheggie@gmail.com"
target=_blank>ajheggie@gmail.com</A>><BR>To: "Discussion of biomass
cooking stoves" <<A href="mailto:stoves@lists.bioenergylists.org"
target=_blank>stoves@lists.bioenergylists.<U></U>org</A>><BR>Sent:
Sunday, July 28, 2013 5:23 AM<BR>Subject: Re: [Stoves] Cajun Rocket
Pot<BR><BR><BR>
<BLOCKQUOTE
style="BORDER-LEFT: #ccc 1px solid; MARGIN: 0px 0px 0px 0.8ex; PADDING-LEFT: 1ex"
class=gmail_quote>[Default] On Sat, 27 Jul 2013 20:48:02 -0400,"Lanny
Henson"<BR><<A href="mailto:lannych@bellsouth.net"
target=_blank>lannych@bellsouth.net</A>> wrote:<BR><BR>
<BLOCKQUOTE
style="BORDER-LEFT: #ccc 1px solid; MARGIN: 0px 0px 0px 0.8ex; PADDING-LEFT: 1ex"
class=gmail_quote>I like creative people and take no pleasure
criticizing their work but it is going to be too expensive and difficult
to make with all the pegs.<BR></BLOCKQUOTE><BR>Lanny have you seen
capacitive discharge stud welding? This would<BR>allow welding of
dissimilar metals to the pot in any pattern. I have<BR>no idea of
costs.<BR><BR>Have you done heat transfer tests with your 4mm aluminium
pot compared<BR>with the thinner stainless one? Stainless is a notoriously
poor<BR>conductor of heat and theoretically would need to be just under
a<BR>tenth of the thickness of aluminium for the same conductivity, but
I<BR>do use stainless pots at home.<BR><BR>Finally can you explain the
difference between a vat and a pot?<BR><BR>Paul I do consider this to be
important because biomass stoves have an<BR>inherent problem with heat
transfer compared with natural gas or LPG<BR>so improvements in heat
exchange will have high
benefits.<BR><BR>AJH<BR></BLOCKQUOTE><BR><BR><BR>______________________________<U></U>_________________<BR>Stoves
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