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<div class="moz-cite-prefix">Dear Crispin and all,<br>
<br>
We await the more complete document from Crispin about his "Anglo
Supra Nova" charcoal stove with claims of TLUD performance. I
saw it in Cambodia (but not in operation). I think it has great
potential. (But the name is a bit long, and Anglo is not a
selling point in many cultures.)<br>
<br>
Paul<br>
<pre class="moz-signature" cols="72">Paul S. Anderson, PhD aka "Dr TLUD"
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 4/9/2013 12:18 AM, Crispin Pemberton-Pigott wrote:<br>
</div>
<blockquote cite="mid:00f701ce34e1$a85805f0$f90811d0$@gmail.com"
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<p class="MsoNormal"><span
style="font-size:11.0pt;font-family:"Calibri","sans-serif";color:#1F497D;mso-fareast-language:EN-US">Dear
Alex<o:p></o:p></span></p>
<p class="MsoNormal"><span
style="font-size:11.0pt;font-family:"Calibri","sans-serif";color:#1F497D;mso-fareast-language:EN-US"><o:p> </o:p></span></p>
<p class="MsoNormal"><span
style="font-size:11.0pt;font-family:"Calibri","sans-serif";color:#1F497D;mso-fareast-language:EN-US">Cecil
certainly does because lifespan is core to his arguments
about improving the experience of the owner. If a Keren
stove lasts about 3 months in Yogyakarta, 2 weeks in
commercial use, then a stove that lasts 3 years can
justifiably be quite a bit more expensive.<o:p></o:p></span></p>
<p class="MsoNormal"><span
style="font-size:11.0pt;font-family:"Calibri","sans-serif";color:#1F497D;mso-fareast-language:EN-US"><o:p> </o:p></span></p>
<p class="MsoNormal"><span
style="font-size:11.0pt;font-family:"Calibri","sans-serif";color:#1F497D;mso-fareast-language:EN-US">Whether
burning the char lowers the lifetime or not is dependent on
the materials and the temperatures. I think there is an
assumption in the tincanium stove producers that burning
char is bad because their stoves can’t handle it. Other
people make stoves that only burn charcoal so if they are
adapted to burn wood as well – no problem. The technology is
not limited to what people happened to use to build one.<o:p></o:p></span></p>
<p class="MsoNormal"><span
style="font-size:11.0pt;font-family:"Calibri","sans-serif";color:#1F497D;mso-fareast-language:EN-US"><o:p> </o:p></span></p>
<p class="MsoNormal"><span
style="font-size:11.0pt;font-family:"Calibri","sans-serif";color:#1F497D;mso-fareast-language:EN-US">Here
is an Anglo Supra Nova (nominally a charcoal stove) burning
6mm wood pellets TLUD style.<o:p></o:p></span></p>
<p class="MsoNormal"><img id="Picture_x0020_1"
src="cid:part1.01020901.09030109@ilstu.edu" width="165"
height="244"><span
style="font-size:11.0pt;font-family:"Calibri","sans-serif";color:#1F497D;mso-fareast-language:EN-US"><o:p></o:p></span></p>
<p class="MsoNormal"><span
style="font-size:11.0pt;font-family:"Calibri","sans-serif";color:#1F497D;mso-fareast-language:EN-US"><o:p> </o:p></span></p>
<p class="MsoNormal"><span
style="font-size:11.0pt;font-family:"Calibri","sans-serif";color:#1F497D;mso-fareast-language:EN-US">Here
you can see individual preheated secondary air jets entering
the wood gas.<o:p></o:p></span></p>
<p class="MsoNormal"><img id="Picture_x0020_2"
src="cid:part2.04090301.00020500@ilstu.edu" width="456"
height="322"><span
style="font-size:11.0pt;font-family:"Calibri","sans-serif";color:#1F497D;mso-fareast-language:EN-US"><o:p></o:p></span></p>
<p class="MsoNormal"><span
style="font-size:11.0pt;font-family:"Calibri","sans-serif";color:#1F497D;mso-fareast-language:EN-US"><o:p> </o:p></span></p>
<p class="MsoNormal"><span
style="font-size:11.0pt;font-family:"Calibri","sans-serif";color:#1F497D;mso-fareast-language:EN-US">Here
you can see the charred pellets being burned after pyrolysis
is complete. This is accomplished by opening the primary air
door which changes the air/fuel ratio on the primary side.<o:p></o:p></span></p>
<p class="MsoNormal"><span
style="font-size:11.0pt;font-family:"Calibri","sans-serif";color:#1F497D;mso-fareast-language:EN-US"><o:p> </o:p></span></p>
<p class="MsoNormal"><span
style="font-size:11.0pt;font-family:"Calibri","sans-serif";color:#1F497D;mso-fareast-language:EN-US">This
unit is slightly cheaper than the Anglo Supra (a sort of
Thai Bucket which was itself introduced 30 years ago by
Robert van der Plas and ‘Tig’ Tuntivate, so it is rumoured).
It has a working life of about 3 years burning charcoal.
Cost is $5.50 retail, much less at the producer.<o:p></o:p></span></p>
<p class="MsoNormal"><span
style="font-size:11.0pt;font-family:"Calibri","sans-serif";color:#1F497D;mso-fareast-language:EN-US"><o:p> </o:p></span></p>
<p class="MsoNormal"><span
style="font-size:11.0pt;font-family:"Calibri","sans-serif";color:#1F497D;mso-fareast-language:EN-US">Regards<o:p></o:p></span></p>
<p class="MsoNormal"><span
style="font-size:11.0pt;font-family:"Calibri","sans-serif";color:#1F497D;mso-fareast-language:EN-US">Crispin<o:p></o:p></span></p>
<p class="MsoNormal"><span
style="font-size:11.0pt;font-family:"Calibri","sans-serif";color:#1F497D;mso-fareast-language:EN-US"><o:p> </o:p></span></p>
<p class="MsoNormal"><span
style="font-size:11.0pt;font-family:"Calibri","sans-serif";color:#1F497D;mso-fareast-language:EN-US"><o:p> </o:p></span></p>
<p class="MsoNormal"><o:p> </o:p></p>
<div>
<p class="MsoNormal">Crispin,<br>
Do you think it is useful to place a value on the reduced
life span of a $5 TLUD when burning char compared to the
same TLUD not burning the char?<br>
Alex<br>
<br>
<o:p></o:p></p>
</div>
<p class="MsoNormal"><o:p> </o:p></p>
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