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<div class="moz-cite-prefix">As another example, I have seen the
varnished pot bottom after use with a fan assisted TLUD on low
fire. At high fire there was none and that is with dry pellets.
Both had no visible emission. I felt it was excess air and/or
sneekage around the small flame that caused it. Turbulence was
high with pre-heated secondary air. Perhaps the firing range of a
TLUD can be expanded and remain minimal in "varnish", soot and CO,
however I am of the opinion that there is only one tuned sweet
spot for any burner and all other burn rates and air adjustments
are a compromise unless there is also a change in the structure of
the burner. We need numbers on the scale of the compromise. <br>
<br>
Is varnish a good conductor?<br>
<br>
Alex<br>
<br>
<br>
On 30/07/2013 8:02 AM, Jonathan P Gill wrote:<br>
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<div>Christa,</div>
<div><br>
</div>
<div>I have done that too. If the TLUD is very poorly tuned, you
can get nasty deposits from "dry" wood pellets. I have made some
very nice creosote from wood pellets with TLUDS that were
operating at too low a temp and had a very poor fuel air ratio
with insufficient turbulence in the burning gases.</div>
<div><br>
</div>
<div>I find that, with proper tuning, I can achieve clean results
from about any fuel, including freshly cut wood chips @ 40%
moisture content. I can say this from experience.</div>
<div><br>
</div>
<div>Currently, I am working in TLUD powered retorts heated from
the bottom with gas jets coming out from the top. These are the
opposites of TLUDS as they are Bottom Up designs. So far so
good. More to come...</div>
<div><br>
</div>
<div>Regards,</div>
<div><br>
</div>
<div>Jock</div>
<div><br>
Extract CO2 from the atmosphere!</div>
<div><br>
On Jul 30, 2013, at 1:57 AM, CHRISTA ROTH <<a
moz-do-not-send="true" href="mailto:stoves@foodandfuel.info">stoves@foodandfuel.info</a>>
wrote:<br>
<br>
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<div>
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<base href="x-msg://438/">The TLUD only if you have a well
processed dry predictable fuel. otherwise you can coat the
entire fins in a 'varnish' from condensed vapors and that is
no tun at all to scrub off, not even from a flat bottom pot
(done that…)
<div>Christa (from the bush in Benin, with patchy internet
access)<br>
<div><br>
<div>
<div>Am 29.07.2013 um 23:31 schrieb "Andreatta, Dale A."
<<a moz-do-not-send="true"
href="mailto:dandreatta@sealimited.com">dandreatta@sealimited.com</a>>:</div>
<br class="Apple-interchange-newline">
<blockquote type="cite">
<div link="blue" vlink="purple" style="font-family:
Helvetica; font-size: medium; font-style: normal;
font-variant: normal; font-weight: normal;
letter-spacing: normal; line-height: normal;
orphans: 2; text-align: -webkit-auto; text-indent:
0px; text-transform: none; white-space: normal;
widows: 2; word-spacing: 0px;
-webkit-text-size-adjust: auto;
-webkit-text-stroke-width: 0px; " lang="EN-US">
<div class="WordSection1" style="page: WordSection1;
">
<div style="margin: 0in 0in 0.0001pt; font-size:
12pt; font-family: 'Times New Roman', serif; "><span
style="font-size: 11pt; font-family: Calibri,
sans-serif; color: rgb(31, 73, 125); ">Yes, a
TLUD would have a lot less soot. Charcoal
stoves too. <o:p></o:p></span></div>
<div style="margin: 0in 0in 0.0001pt; font-size:
12pt; font-family: 'Times New Roman', serif; "><span
style="font-size: 11pt; font-family: Calibri,
sans-serif; color: rgb(31, 73, 125); "> </span></div>
<div style="margin: 0in 0in 0.0001pt; font-size:
12pt; font-family: 'Times New Roman', serif; "><span
style="font-size: 11pt; font-family: Calibri,
sans-serif; color: rgb(31, 73, 125); ">The
message from Todd Albi mentioned a Turbopot,
whose website I just checked out. It also
claims fantastic results. Who knew there were
all these finned pots out there?<o:p></o:p></span></div>
<div style="margin: 0in 0in 0.0001pt; font-size:
12pt; font-family: 'Times New Roman', serif; "><span
style="font-size: 11pt; font-family: Calibri,
sans-serif; color: rgb(31, 73, 125); "> </span></div>
<div style="margin: 0in 0in 0.0001pt; font-size:
12pt; font-family: 'Times New Roman', serif; "><span
style="font-size: 11pt; font-family: Calibri,
sans-serif; color: rgb(31, 73, 125); ">Dale<o:p></o:p></span></div>
<div style="margin: 0in 0in 0.0001pt; font-size:
12pt; font-family: 'Times New Roman', serif; "><span
style="font-size: 11pt; font-family: Calibri,
sans-serif; color: rgb(31, 73, 125); "> </span></div>
<div>
<div style="border-style: solid none none;
border-top-width: 1pt; border-top-color:
rgb(181, 196, 223); padding: 3pt 0in 0in; ">
<div style="margin: 0in 0in 0.0001pt;
font-size: 12pt; font-family: 'Times New
Roman', serif; "><b><span style="font-size:
10pt; font-family: Tahoma, sans-serif; ">From:</span></b><span
style="font-size: 10pt; font-family:
Tahoma, sans-serif; "><span
class="Apple-converted-space"> </span>Stoves
[<a class="moz-txt-link-freetext" href="mailto:stoves">mailto:stoves</a>-<a moz-do-not-send="true"
href="mailto:bounces@lists.bioenergylists.org"
style="color: purple; text-decoration:
underline; ">bounces@lists.bioenergylists.org</a>]<span
class="Apple-converted-space"> </span><b>On
Behalf Of<span
class="Apple-converted-space"> </span></b>Tom
Miles<br>
<b>Sent:</b><span
class="Apple-converted-space"> </span>Sunday,
July 28, 2013 2:27 PM<br>
<b>To:</b><span
class="Apple-converted-space"> </span>'Discussion
of biomass cooking stoves'<br>
<b>Subject:</b><span
class="Apple-converted-space"> </span>Re:
[Stoves] Cajun Rocket Pot<o:p></o:p></span></div>
</div>
</div>
<div style="margin: 0in 0in 0.0001pt; font-size:
12pt; font-family: 'Times New Roman', serif; "><o:p> </o:p></div>
<div style="margin: 0in 0in 0.0001pt; font-size:
12pt; font-family: 'Times New Roman', serif; "><span
style="font-size: 11pt; font-family: Calibri,
sans-serif; color: rgb(31, 73, 125); ">Is a
TLUD likely to have less soot buildup on fins?<o:p></o:p></span></div>
<div style="margin: 0in 0in 0.0001pt; font-size:
12pt; font-family: 'Times New Roman', serif; "><span
style="font-size: 11pt; font-family: Calibri,
sans-serif; color: rgb(31, 73, 125); "> </span></div>
<div style="margin: 0in 0in 0.0001pt; font-size:
12pt; font-family: 'Times New Roman', serif; "><span
style="font-size: 11pt; font-family: Calibri,
sans-serif; color: rgb(31, 73, 125); ">Tom<o:p></o:p></span></div>
<div style="margin: 0in 0in 0.0001pt; font-size:
12pt; font-family: 'Times New Roman', serif; "><span
style="font-size: 11pt; font-family: Calibri,
sans-serif; color: rgb(31, 73, 125); "> </span></div>
</div>
</div>
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