<html>
<head>
<meta content="text/html; charset=UTF-8" http-equiv="Content-Type">
</head>
<body bgcolor="#FFFFFF" text="#000000">
Cripsin,<br>
<br>
The metal-pipe version you described could have some practical
implications for use with biomass as well as coal. <br>
<br>
We will assume that scrap pipe is available and cheap.<br>
<br>
Pipe will withstand the corrosion well.<br>
<br>
Pipe of such dimensions will be emptied / cleaned at a door on the
side near the bottom (or with a trap-door through the bottom which
would be more involved and require legs/supports.) There would be
no allowance for tipping over to dump out char or ash.<br>
<br>
The empty unit will stay hot/ warm for quite a while, so it probably
should not be reloaded and reignited as a TLUD / MPF unit right
away. (We lack experience about this.)<br>
<br>
After a TLUD operation with MPF (migratory pyrolytic front), the
fire will be at the bottom. The unit COULD be continuously feed
additional fuel from the top, opperating as a traditional updraft
gasifier. Note that this would be bottom burning like an
incinerator, which generally causes worse emissions unless
additional adjustments are made. The entry points and amounts of
air (primary and secondary) can greatly impact this performance.
For some societies and situations, this might be appropriate.<br>
<br>
REQUEST:<br>
Who has conditions to do the development work about this type of
device? NOT a tinsmith's job!!! Please volunteer. Or make a
request for some minor financial assistance. <br>
<br>
Remember that this can have significant usefulness in colder
climates where room heating is also of value.<br>
<br>
Crispin's time in Tajikistan is limited. We need some
continuity. Maybe a team effort. We can start by bringing
together the various messages about this, including Crispin's
photos. <br>
<br>
I will participate, but I do not work alone any more. Make yourself
known!!!<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 3/13/2016 3:25 AM, Crispin
Pemberton-Pigott wrote:<br>
</div>
<blockquote
cite="mid:COL401-EAS206E31C4AEE2FBD09E0AB18B1B70@phx.gbl"
type="cite">
<meta http-equiv="Content-Type" content="text/html; charset=UTF-8">
<style> body { font-family: "Calibri","Slate Pro",sans-serif,"sans-serif"; color:#262626 }</style>
<div>Dear TLUD Cookers</div>
<div><br>
</div>
<div><font face="Calibri, Slate Pro, sans-serif, sans-serif">This
is a top view of the cooking space on the Tajiki TLUD. The
large circle is 2.7mm mild steel sheet and the hole is made
with a plasma cutter. The diameter of the hole is such that
the top edge of the rather thick walled body serves as a
holder for the cut-out. </font></div>
<div><font face="Calibri, Slate Pro, sans-serif, sans-serif"><br>
</font></div>
<div><font face="Calibri, Slate Pro, sans-serif, sans-serif">This
deletes the usual ring that normally has to be cut separately
and welded under the outside diameter. </font></div>
<div><font face="Calibri, Slate Pro, sans-serif, sans-serif"><br>
</font></div>
<div><font face="Calibri, Slate Pro, sans-serif, sans-serif">Using
a plasma (in this case one with a fairly wide kerf - 1.6mm)
means the cutout can be used if the hole diameter is pushed
out pretty much to the limit. It sits on top of the pipe just
enough to weld it on (the welding heated the inner edge and
discoloured it). </font></div>
<div><font face="Calibri, Slate Pro, sans-serif, sans-serif"><br>
</font></div>
<div><font face="Calibri, Slate Pro, sans-serif, sans-serif">The
cutout thus cannot fall into the pipe even though it is 3.2 mm
smaller than the hole. The main combustion action is directly
under the plate so it gets pretty hot: >400 C on the
upper surface. If a cast iron disk were used it would last
longer. </font></div>
<div><font face="Calibri, Slate Pro, sans-serif, sans-serif"><br>
</font></div>
<div><font face="Calibri, Slate Pro, sans-serif, sans-serif">Regards </font></div>
<div><font face="Calibri, Slate Pro, sans-serif, sans-serif">Crispin
in Urumqi</font></div>
<div><font face="Calibri, Slate Pro, sans-serif, sans-serif"><br>
</font></div>
<div><font face="Calibri, Slate Pro, sans-serif, sans-serif"><br>
</font></div>
<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>