<html>
<head>
<meta content="text/html; charset=windows-1252"
http-equiv="Content-Type">
</head>
<body bgcolor="#FFFFFF" text="#000000">
Jock and all,<br>
<br>
I must respectfully disagree. The TLUD system can be and usually
is quite consistent with the steady downward movement of the
pyrolytic front (MPF). Primary air control is essential, and can
be as small an opening as the lead of a pencil.<br>
<br>
In comparison with OTHER types of combustion (such as stick-fuel
into Rocket stoves), the TLUDs are more consistent (unless the stove
operator is spending much time on tending to the insertion of the
wood.)<br>
<br>
Paul<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>
<div class="moz-cite-prefix">On 6/16/2016 7:10 AM, Jock Gill wrote:<br>
</div>
<blockquote
cite="mid:A4ED8983-3E1F-4061-86ED-3B341806DB1C@jockgill.com"
type="cite">
<meta http-equiv="content-type" content="text/html;
charset=windows-1252">
<div>Basically a TLUD is a very non linear system. It is
extremely hard to maintain an ideal fuel to air ratio. The
hotter it gets, the more gas it produces, the higher the
flames, the hotter it gets. It is hard to create the degree of
turbulence for proper mixing. It is hard to maintain useful
residence times in the combustion zone. It is a nasty feedback
loop that is difficult to work with.</div>
<div id="AppleMailSignature"><br>
</div>
<div id="AppleMailSignature">Se my work with flame retention
played and flame deflectors.<br>
<br>
<div>
<div><span style="background-color: rgba(255, 255, 255, 0);">Jock
Gill</span></div>
<div><a moz-do-not-send="true" dir="ltr"
href="x-apple-data-detectors://0"
x-apple-data-detectors="true"
x-apple-data-detectors-type="address"
x-apple-data-detectors-result="0" style="background-color:
rgba(255, 255, 255, 0);"><font color="#000000">P. O. Box 3</font></a></div>
<div><a moz-do-not-send="true" dir="ltr"
href="x-apple-data-detectors://0"
x-apple-data-detectors="true"
x-apple-data-detectors-type="address"
x-apple-data-detectors-result="0" style="background-color:
rgba(255, 255, 255, 0);"><font color="#000000">Peacham, VT
05862</font></a></div>
</div>
<div><span style="background-color: rgba(255, 255, 255, 0);"><br>
</span></div>
<div>Cell: (617) 449-8111</div>
<div><span style="background-color: rgba(255, 255, 255, 0);"><br>
</span></div>
<span style="background-color: rgba(255, 255, 255, 0);">Extract
CO2 from the atmosphere!</span></div>
<div><br>
On Jun 15, 2016, at 5:06 AM, Mangolazi <<a
moz-do-not-send="true" href="mailto:mangolazi@yahoo.com"><a class="moz-txt-link-abbreviated" href="mailto:mangolazi@yahoo.com">mangolazi@yahoo.com</a></a>>
wrote:<br>
<br>
</div>
<blockquote type="cite">
<div><span>I've always wondered what causes that towering
inferno to occur. I've had this happen a few times with a
tiny tin can stove and with a big paint can biochar burner.
I try to avoid it so my pots don't get damaged. </span><br>
<span></span><br>
<span>Is it too much primary air? Lots of wood gas from
certain fuels? Fast gas flow from a tall chimney? </span><br>
<span></span><br>
<span>Looking at a bunch of papers on TLUDs, it seems there's
a trade off between temperature and burn time. You can
throttle primary air to get a long burn time but
temperatures may not get high enough to burn cleanly,
whereas a more complete and hotter burn means the fuel is
turned to char much faster. </span><br>
<span></span><br>
<span>On June 15, 2016 6:23:02 AM GMT+08:00, <a
moz-do-not-send="true" href="mailto:neiltm@uwclub.net"><a class="moz-txt-link-abbreviated" href="mailto:neiltm@uwclub.net">neiltm@uwclub.net</a></a>
wrote:</span><br>
<blockquote type="cite"><span>On 14 Jun 2016 at 16:17,
Mangolazi wrote:</span><br>
</blockquote>
<blockquote type="cite"><span></span><br>
</blockquote>
<blockquote type="cite">
<blockquote type="cite"><span>Hi Neil, thanks for the
recommendations. I think I'll get one of</span><br>
</blockquote>
</blockquote>
<blockquote type="cite">
<blockquote type="cite"><span>those cheap Chinese stoves to
see what they can do. Most of them</span><br>
</blockquote>
</blockquote>
<blockquote type="cite">
<blockquote type="cite"><span>look the same so I assume
they're all from the same factory. </span><br>
</blockquote>
</blockquote>
<blockquote type="cite"><span></span><br>
</blockquote>
<blockquote type="cite"><span>They do seem to be all the same.
The main difference between them is</span><br>
</blockquote>
<blockquote type="cite"><span>in </span><br>
</blockquote>
<blockquote type="cite"><span>which type of pot
support/concentrator top you choose. There are the </span><br>
</blockquote>
<blockquote type="cite"><span>fold out sort, with a gap
between top of concentrator and pot of 2cm,</span><br>
</blockquote>
<blockquote type="cite"><span>and</span><br>
</blockquote>
<blockquote type="cite"><span>the fixed higher rise top
(4.5cm) with open side that permits easier</span><br>
</blockquote>
<blockquote type="cite"><span>fuel</span><br>
</blockquote>
<blockquote type="cite"><span>feeding without removing the
pot. I have both, and now prefer the</span><br>
</blockquote>
<blockquote type="cite"><span>latter</span><br>
</blockquote>
<blockquote type="cite"><span>as the increased height between
secondary air holes and pot makes for a</span><br>
</blockquote>
<blockquote type="cite"><span></span><br>
</blockquote>
<blockquote type="cite"><span>slightly cleaner burn, and
interferes less with the draught. It has </span><br>
</blockquote>
<blockquote type="cite"><span>closer support points though,
although I have yet to suffer instability</span><br>
</blockquote>
<blockquote type="cite"><span></span><br>
</blockquote>
<blockquote type="cite"><span>from that. All the parts
between the two stoves, bought years apart,</span><br>
</blockquote>
<blockquote type="cite"><span>are</span><br>
</blockquote>
<blockquote type="cite"><span>interchangeable.</span><br>
</blockquote>
<blockquote type="cite"><span></span><br>
</blockquote>
<blockquote type="cite">
<blockquote type="cite"><span>They're</span><br>
</blockquote>
</blockquote>
<blockquote type="cite">
<blockquote type="cite"><span>also rather squat - more
power, less run time? </span><br>
</blockquote>
</blockquote>
<blockquote type="cite">
<blockquote type="cite"><span></span><br>
</blockquote>
</blockquote>
<blockquote type="cite"><span></span><br>
</blockquote>
<blockquote type="cite"><span>They are squat, but run time
really depends on the fuel. It is about</span><br>
</blockquote>
<blockquote type="cite"><span>10 </span><br>
</blockquote>
<blockquote type="cite"><span>mins of towering inferno run as
a TLUD with dry wood, but double that</span><br>
</blockquote>
<blockquote type="cite"><span>and</span><br>
</blockquote>
<blockquote type="cite"><span>up to half an hour with
moister/denser/larger fuel, and I've read an</span><br>
</blockquote>
</div>
</blockquote>
<br>
<fieldset class="mimeAttachmentHeader"></fieldset>
<br>
<pre wrap="">_______________________________________________
Stoves mailing list
to Send a Message to the list, use the email address
<a class="moz-txt-link-abbreviated" href="mailto:stoves@lists.bioenergylists.org">stoves@lists.bioenergylists.org</a>
to UNSUBSCRIBE or Change your List Settings use the web page
<a class="moz-txt-link-freetext" href="http://lists.bioenergylists.org/mailman/listinfo/stoves_lists.bioenergylists.org">http://lists.bioenergylists.org/mailman/listinfo/stoves_lists.bioenergylists.org</a>
for more Biomass Cooking Stoves, News and Information see our web site:
<a class="moz-txt-link-freetext" href="http://stoves.bioenergylists.org/">http://stoves.bioenergylists.org/</a>
</pre>
</blockquote>
<br>
</body>
</html>