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Dear Crispin,<br>
If it's okay with you, I can put the page and pictures in a .zip,
tarball or 7zip file for anyone who has bandwidth-challenged
connections or other problems reviewing the pics.<br>
Merry Christmas!<br>
<br>
Ronald von Nebendemkaltenkachelofen:/<br>
<br>
<br>
On 22.12.2010 17:50, Crispin Pemberton-Pigott wrote:
<blockquote cite="mid:05fe01cba1f8$51b48ee0$f51daca0$@gmail.com"
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<div class="WordSection1">
<p class="MsoNormal">Dear Friends<o:p></o:p></p>
<p class="MsoNormal"><o:p> </o:p></p>
<p class="MsoNormal">For a limited time I have placed some
photographs with long file names showing how to modify a
traditional Mongolian coal stove. This modification seems to
reduce fuel use in the field by at least 20%, CO by 50% and PM
by 80%. If you are in an area that burns coal and needs space
heating (north Asia for example) you may want to have a look
and download all the photos (7 meg) for use later. Space is
limited so they will be replaced with other developments as
time passes.<o:p></o:p></p>
<p class="MsoNormal"><o:p> </o:p></p>
<p class="MsoNormal">It costs $1 locally to make the adaption,
which is saved within 2-3 days depending on the weather.<o:p></o:p></p>
<p class="MsoNormal"><o:p> </o:p></p>
<p class="MsoNormal">We found locally a stainless steel tube 63
x 1.5mm wall. It is cheap enough to be a viable large scale
option. The modification takes a 28 cm long pipe cut at 45
degrees on both ends.<o:p></o:p></p>
<p class="MsoNormal"><o:p> </o:p></p>
<p class="MsoNormal">In the photos this is substituted with a
rolled sheet of galv sheet showing that it can be done with
scrap steel if nothing is available.<span style="font-size:
8pt; font-family: "Garamond","serif";
color: black;"><o:p></o:p></span></p>
<p class="MsoNormal"><o:p> </o:p></p>
<p class="MsoNormal">If there is interest a page can be
developed for the BioEnergy site explaining the same thing in
more words.<o:p></o:p></p>
<p class="MsoNormal"><o:p> </o:p></p>
<p class="MsoNormal">The files are at:<o:p></o:p></p>
<p class="MsoNormal"><o:p> </o:p></p>
<p class="MsoNormal"><span style="font-size: 9pt; font-family:
"Arial","sans-serif"; color: black;"><a
moz-do-not-send="true"
href="http://www.newdawnengineering.com/library/stoves/shatlil">www.newdawnengineering.com/library/stoves/shatlil</a><o:p></o:p></span></p>
<p class="MsoNormal"><o:p> </o:p></p>
<p class="MsoNormal">It shows how to modify the stove using
bricks and clay (plus a piece of pipe), how to light it using
the End-Lighting Cross-Draft technique, and how to refuel it.
There are actually two ways to refuel it – the one shown is
refuelling through the fuel door. It can also be refuelled by
opening the top of the stove to achieve the same thing.<o:p></o:p></p>
<p class="MsoNormal"><o:p> </o:p></p>
<p class="MsoNormal">The power is variable, not just by changing
the amount of fuel in it. The combustion chamber can be
narrowed with ordinary bricks. The stove can be run in 5, 7,
11 and 13 kW configurations. For example tonight it is -28 C
and a small stove will be used wide open to give the needed
heat. In a week it might be -12 at night so the stove used
drops in 2 long bricks and continues to fill the (now
narrower) fuel area. <o:p></o:p></p>
<p class="MsoNormal"><o:p> </o:p></p>
<p class="MsoNormal">In all cases the coal is ignited at the end
where the outlet to the chimney is located and the fuel piled
towards the door. This layout accomplishes a sort of sideways
TLUD that can be refuelled without creating smoke at the end
or having to reload at the very end of the burn. Hot coals and
anything else that can burn is raked to the chimney end and
some wood tossed on top. Flames develop. New coal is added
between the fire and the door and the process continues.<o:p></o:p></p>
<p class="MsoNormal"><o:p> </o:p></p>
<p class="MsoNormal">Two stoves have been made as a trial with a
larger heat exchanger and a slightly widened combustion
chamber to make it easy for women to install standard bricks
(women do most of the stove bricking and maintenance).<o:p></o:p></p>
<p class="MsoNormal"><o:p> </o:p></p>
<p class="MsoNormal">The process of burning increases the burn
time by about 100% and moderates the kW so the gers (yurts)
are heated more or less constantly instead of a huge fire
followed by rapid collapse.<o:p></o:p></p>
<p class="MsoNormal"><o:p> </o:p></p>
<p class="MsoNormal">This work is supported in many ways by the
Asian Development Bank, World Vision, XacBank Mongolia,
Dalkia, Mon-Energy, and other organisations and individuals.
Support is in the form of laboratory testing, advertising,
demonstrations, field testing and gathering feedback.<o:p></o:p></p>
<p class="MsoNormal"><o:p> </o:p></p>
<p class="MsoNormal">Regards<o:p></o:p></p>
<p class="MsoNormal">Crispin<o:p></o:p></p>
<p class="MsoNormal"><o:p> </o:p></p>
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