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<div class="moz-cite-prefix">Huck,<br>
<br>
In the video, see 1:30 to 1:40 and also 2:20. The chimney
goes out the back side of the shield that creates the sunken
pot. Note that the POT has a black metal ring around it. The
ring seals the gap between the pot and the shield. It does NOT
need to be a perfect seal, but should be "reasonable". The hot
gases up the chimney create the draft (partial vacuum) for the
natural draft of the gasifier AND it will pull inward some air
through any small gaps between the pot (with ring) and the shield.<br>
<br>
"Pots with rings that close the gap" is one way. The other way
is "shields with rings into which pots are placed."<br>
<br>
For even better heat transfer efficiency, consider having double
walled or triple walled "shields" such as are well illustrated by
the institutional stove structures of InStove. See instove.org<br>
<br>
Paul<br>
<br>
<pre class="moz-signature" cols="72">Doc / Dr TLUD / Prof. Paul S. Anderson, PhD
Email: <a class="moz-txt-link-abbreviated" href="mailto:psanders@ilstu.edu">psanders@ilstu.edu</a>
Skype: paultlud Phone: +1-309-452-7072
Website: <a class="moz-txt-link-abbreviated" href="http://www.drtlud.com">www.drtlud.com</a></pre>
On 12/9/2014 3:10 PM, Huck Rorick wrote:<br>
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<p class="MsoNormal"><span
style="font-size:11.0pt;font-family:"Calibri","sans-serif";color:#1F497D">Thanks
Paul,<o:p></o:p></span></p>
<p class="MsoNormal"><span
style="font-size:11.0pt;font-family:"Calibri","sans-serif";color:#1F497D">I
couldn’t see very well how the chimney was connected to the
TLUD in the video link. Any pictures to clarify?<o:p></o:p></span></p>
<p class="MsoNormal"><span
style="font-size:11.0pt;font-family:"Calibri","sans-serif";color:#1F497D">Wouldn’t
smoke come out around the skirt?<o:p></o:p></span></p>
<p class="MsoNormal"><span
style="font-size:11.0pt;font-family:"Calibri","sans-serif";color:#1F497D">Huck<o:p></o:p></span></p>
<p class="MsoNormal"><span
style="font-size:11.0pt;font-family:"Calibri","sans-serif";color:#1F497D"><o:p> </o:p></span></p>
<p class="MsoNormal"><a moz-do-not-send="true"
name="_MailEndCompose"><span
style="font-size:11.0pt;font-family:"Calibri","sans-serif";color:#1F497D"><o:p> </o:p></span></a></p>
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1.0pt;padding:3.0pt 0in 0in 0in">
<p class="MsoNormal"><b><span
style="font-size:10.0pt;font-family:"Tahoma","sans-serif";color:windowtext">From:</span></b><span
style="font-size:10.0pt;font-family:"Tahoma","sans-serif";color:windowtext">
Paul Anderson [<a class="moz-txt-link-freetext" href="mailto:psanders@ilstu.edu">mailto:psanders@ilstu.edu</a>] <br>
<b>Sent:</b> Monday, December 8, 2014 9:14 PM<br>
<b>To:</b> Huck Rorick; 'Aprovecho Research Center';
'Discussion of biomass cooking stoves'<br>
<b>Subject:</b> Chimney on TLUD stoves<o:p></o:p></span></p>
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</div>
<p class="MsoNormal"><o:p> </o:p></p>
<div>
<p class="MsoNormal">Huck,<br>
<br>
There are views in many places showing TLUD heat sources in
cookstove-bodies with chimneys. <br>
<br>
One is <a moz-do-not-send="true"
href="https://www.youtube.com/watch?v=SaeanoWZE7E">https://www.youtube.com/watch?v=SaeanoWZE7E</a>
(It is a Quick Pick item at the <a moz-do-not-send="true"
href="http://www.drtlud.com">www.drtlud.com</a>
VIT08001 ) That is a 2008 item. <br>
<br>
Another is of the Servals Champion stove with a mud/clay
stove with two pots.<br>
<br>
And the TLUD natural draft stove that won the first-ever Cat
Pee low emissions award, in 2005, and started the model name
of "Champion" was with a chimney. <br>
<br>
Remember to keep the concepts and devices for heat making
(such as TLUD) sufficiently separate from the concepts and
devices of heat capture (as in sunken pot and chimney and
plancha, which are stove structure items.). Heat making
and heat capture can be closely related in many stove
designs, but try to see them as aspects that can be refined
separately from each other.<br>
<br>
Paul<br>
<br>
<br>
<o:p></o:p></p>
<pre>Doc / Dr TLUD / Prof. Paul S. Anderson, PhD <o:p></o:p></pre>
<pre>Email: <a moz-do-not-send="true" href="mailto:psanders@ilstu.edu">psanders@ilstu.edu</a> <o:p></o:p></pre>
<pre>Skype: paultlud Phone: +1-309-452-7072<o:p></o:p></pre>
<pre>Website: <a moz-do-not-send="true" href="http://www.drtlud.com">www.drtlud.com</a><o:p></o:p></pre>
<p class="MsoNormal">On 12/8/2014 5:35 PM, Huck Rorick wrote:<o:p></o:p></p>
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<p class="MsoNormal"><span
style="font-size:11.0pt;font-family:"Calibri","sans-serif";color:#1F497D">Paul,
Dean & List,</span><o:p></o:p></p>
<p class="MsoNormal"><span
style="font-size:11.0pt;font-family:"Calibri","sans-serif";color:#1F497D"> </span><o:p></o:p></p>
<p class="MsoNormal"><span
style="font-size:11.0pt;font-family:"Calibri","sans-serif";color:#1F497D">Thanks.</span><o:p></o:p></p>
<p class="MsoNormal"><span
style="font-size:11.0pt;font-family:"Calibri","sans-serif";color:#1F497D"> </span><o:p></o:p></p>
<p class="MsoNormal"><span
style="font-size:11.0pt;font-family:"Calibri","sans-serif";color:#1F497D">I
was especially interested in the sunken pot rocket stove
because it incorporates a chimney. It looks a lot like
some of the ways we are trying to incorporate a chimney
with the Champion or other TLUDs for our project in
Cameroon. From my viewpoint a chimney is essential to a
wood burning stove, even when it is “super clean”. In
California hoods are required for natural gas stoves.</span><o:p></o:p></p>
<p class="MsoNormal"><span
style="font-size:11.0pt;font-family:"Calibri","sans-serif";color:#1F497D"> </span><o:p></o:p></p>
<p class="MsoNormal"><span
style="font-size:11.0pt;font-family:"Calibri","sans-serif";color:#1F497D">Are
the details of these stoves something that Aprovecho wants
to keep private?</span><o:p></o:p></p>
<p class="MsoNormal"><span
style="font-size:11.0pt;font-family:"Calibri","sans-serif";color:#1F497D"> </span><o:p></o:p></p>
<p class="MsoNormal"><span
style="font-size:11.0pt;font-family:"Calibri","sans-serif";color:#1F497D">I’m
frustrated with the fairly common description as “super
clean”. It seems like every manufacturer says that about
their stoves. It would be nice to have some more exact
measurement (and I guess there is a lot of debate about
what the measures should be).</span><o:p></o:p></p>
<p class="MsoNormal"><span
style="font-size:11.0pt;font-family:"Calibri","sans-serif";color:#1F497D"> </span><o:p></o:p></p>
<p class="MsoNormal"><span
style="font-size:11.0pt;font-family:"Calibri","sans-serif";color:#1F497D">Anything
about costs?</span><o:p></o:p></p>
<p class="MsoNormal"><span
style="font-size:11.0pt;font-family:"Calibri","sans-serif";color:#1F497D"> </span><o:p></o:p></p>
<p class="MsoNormal"><span
style="font-size:11.0pt;font-family:"Calibri","sans-serif";color:#1F497D">Huck</span><o:p></o:p></p>
<p class="MsoNormal"><span
style="font-size:11.0pt;font-family:"Calibri","sans-serif";color:#1F497D"> </span><o:p></o:p></p>
<p class="MsoNormal"><o:p> </o:p></p>
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