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Dear Philip,<br>
<br>
Thanks for another great suggestion.<br>
<br>
This is also something that is planned. As part of an unrelated
project we have been looking at this: we are still in the process of
finding a solvent that has a collection yield, that doesn't
interfere with (or gives an interference profile that we can correct
for) and that OH&S will let us have. Fortunately, for the
cookstove work there are fewer constraints than the other project
(which is limited to sampling extremely low flowrates). We'll find a
solution and share it.<br>
<br>
Cheers,<br>
Paul<br>
<br>
<div class="moz-cite-prefix">On 2/09/2016 11:34 PM, Philip Lloyd
wrote:<br>
</div>
<blockquote cite="mid:021e01d20522$eb48cf10$c1da6d30$@co.za"
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<div class="WordSection1">
<p class="MsoNormal"><span
style="font-size:11.0pt;font-family:"Calibri","sans-serif";color:#1F497D">I
think you will find dissolving them in a fairly pure solvent
and doing an infra-red spectrum will tell you a lot.<o:p></o:p></span></p>
<p class="MsoNormal"><span
style="font-size:11.0pt;font-family:"Calibri","sans-serif";color:#1F497D"><o:p> </o:p></span></p>
<p class="MsoNormal"><span
style="font-size:11.0pt;font-family:"Calibri","sans-serif";color:#1F497D">Prof
Philip Lloyd<o:p></o:p></span></p>
<p class="MsoNormal"><span
style="font-size:11.0pt;font-family:"Calibri","sans-serif";color:#1F497D">Energy
Institute, CPUT<o:p></o:p></span></p>
<p class="MsoNormal"><span
style="font-size:11.0pt;font-family:"Calibri","sans-serif";color:#1F497D">SARETEC,
Sachs Circle<o:p></o:p></span></p>
<p class="MsoNormal"><span
style="font-size:11.0pt;font-family:"Calibri","sans-serif";color:#1F497D">Bellville<o:p></o:p></span></p>
<p class="MsoNormal"><span
style="font-size:11.0pt;font-family:"Calibri","sans-serif";color:#1F497D">Tel
021 959 4323<o:p></o:p></span></p>
<p class="MsoNormal"><span
style="font-size:11.0pt;font-family:"Calibri","sans-serif";color:#1F497D">Cell
083 441 5247<o:p></o:p></span></p>
<p class="MsoNormal"><span
style="font-size:11.0pt;font-family:"Calibri","sans-serif";color:#1F497D">PA
Nadia 021 959 4330<o:p></o:p></span></p>
<p class="MsoNormal"><span
style="font-size:11.0pt;font-family:"Calibri","sans-serif";color:#1F497D"><o:p> </o:p></span></p>
<p class="MsoNormal"><span
style="font-size:11.0pt;font-family:"Calibri","sans-serif";color:#1F497D"><o:p> </o:p></span></p>
<p class="MsoNormal"><span
style="font-size:11.0pt;font-family:"Calibri","sans-serif";color:#1F497D"><o:p> </o:p></span></p>
<div>
<div style="border:none;border-top:solid #B5C4DF
1.0pt;padding:3.0pt 0cm 0cm 0cm">
<p class="MsoNormal"><b><span
style="font-size:10.0pt;font-family:"Tahoma","sans-serif";color:windowtext"
lang="EN-US">From:</span></b><span
style="font-size:10.0pt;font-family:"Tahoma","sans-serif";color:windowtext"
lang="EN-US"> Stoves
[<a class="moz-txt-link-freetext" href="mailto:stoves-bounces@lists.bioenergylists.org">mailto:stoves-bounces@lists.bioenergylists.org</a>] <b>On
Behalf Of </b>Paul Medwell<br>
<b>Sent:</b> Friday, September 2, 2016 4:12 AM<br>
<b>To:</b> Discussion of biomass cooking stoves<br>
<b>Subject:</b> Re: [Stoves] Hypothesis for Wonderwerk
TLUD-ND<o:p></o:p></span></p>
</div>
</div>
<p class="MsoNormal"><o:p> </o:p></p>
<p class="MsoNormal" style="margin-bottom:12.0pt">Dear Kirk,
Paul and all,<br>
<br>
Kirk: thanks for circulating your hypothesis. This seems
well-founded.<br>
Paul: measuring long-chain hydrocarbons / tars is part of the
planned project of PhD student Thomas Kirch.<br>
<br>
The intention is to measure the tars fairly soon. The catch is
that our existing micro-GC isn't suitable for this, and
finding someone who is willing to put our tars in their GC-MS
is proving difficult. Until we get funds to buy our own, any
suggestions for other ways of characterising the tars?<br>
<br>
Cheers,<br>
Paul<o:p></o:p></p>
<div>
<p class="MsoNormal">On 1/09/2016 10:53 PM, Paul Anderson
wrote:<o:p></o:p></p>
</div>
<blockquote style="margin-top:5.0pt;margin-bottom:5.0pt">
<p class="MsoNormal">Kirk,<br>
<br>
The Wonderwerk Man has again done wonderful work!!!! Stove
Summit, Stove Camp, assisting Dennis (who then won the Cat
Pee award), and cooking with Flip. It is always a pleasure
being with you.<br>
<br>
The hypothesis (explanatory document) is well done. All
serious stove researchers should read it. Where is this
document being placed for public access. I offer to place
it at the drtlud.com website. (Send your reply to
James Schoner directly or via the Stoves Listserv; I will be
in Mexico for the next 13 days).<br>
<br>
Hypotheses are statements that ask to be confirmed. The
folks with the scientific equipment can now step in and see
if the long-chain hydrocarbons are indeed breaking up when
and where indicated by the hypothesis. Good if that could
be soon, but I expect not. In the meantime, the excellent
low emissions (which are facts, not hypotheses) speak for
themselves.<br>
<br>
The needed scientific studies would help answer several
questions such as whether all three steps (levels) are
needed to accomplish the low emissions and the ability for
turn-down to low fire.<br>
<br>
About turndown such as when cooking in Flip's oven, a
different solution is to have a second gasifier reactor
(fuel chamber) that has a smaller diameter.<br>
<br>
Keep up the good work!! (werk)<br>
<br>
Paul<br>
<br>
<o:p></o:p></p>
<pre>Doc / Dr TLUD / Prof. Paul S. Anderson, PhD<o:p></o:p></pre>
<pre>Email: <a moz-do-not-send="true" href="mailto:psanders@ilstu.edu">psanders@ilstu.edu</a><o:p></o:p></pre>
<pre>Skype: paultlud Phone: +1-309-452-7072<o:p></o:p></pre>
<pre>Website: <a moz-do-not-send="true" href="http://www.drtlud.com">www.drtlud.com</a><o:p></o:p></pre>
<div>
<p class="MsoNormal">On 9/1/2016 12:34 AM, kgharris wrote:<o:p></o:p></p>
</div>
<blockquote style="margin-top:5.0pt;margin-bottom:5.0pt">
<div>
<p class="MsoNormal"><span
style="font-size:10.0pt;font-family:"Arial","sans-serif"">All,</span><o:p></o:p></p>
</div>
<div>
<p class="MsoNormal"> <o:p></o:p></p>
</div>
<div>
<p class="MsoNormal"><span
style="font-size:10.0pt;font-family:"Arial","sans-serif"">Talking
about stoves at the InStove Stove Summit and Aprovecho
Stove Camp made me think through the workings of our
Wonderwerk TLUD-ND. I needed to create a working
hypothesis of why it burns as cleanly as it does.
Attached is the hypothesis. It may not be completely
correct, but it does provide an explaination, or at
least a place to start an explaination. There is a
lot that I don't know about this burning method and a
lot of work left to be done.</span><o:p></o:p></p>
</div>
<div>
<p class="MsoNormal"> <o:p></o:p></p>
</div>
<div>
<p class="MsoNormal"><span
style="font-size:10.0pt;font-family:"Arial","sans-serif"">At
Stove Camp, Sam Bentson, Aprovecho's lab engineer
offered to help me probe into the pressure
variations in the stove. I was sadly involved with
too many things to take him up on it. My loss! What
I did do was to support Dennis, a visiting student
from China, in his development of a wok support with
skirt and chimney. </span> <span
style="font-size:10.0pt;font-family:"Arial","sans-serif"">He
tested it on top of the latest Wonderwerk TLUD-ND
stove and the results were impressive. He made
several adjustments to the dimensions which seemed to
improve its performance even more. He required only
high power and no turn-down.</span><o:p></o:p></p>
</div>
<div>
<p class="MsoNormal"> <o:p></o:p></p>
</div>
<div>
<p class="MsoNormal"><span
style="font-size:10.0pt;font-family:"Arial","sans-serif"">After
Stove Camp I visited with Jon and Flip Anderson. We
put an older Wonderwerk TLUD-ND under one of their
clay ovens, and baked a cake. It required two fuel
(vertically arranged split sticks of an unknown
variety of hardwood) loadings of the stove, the first
to heat the oven and give about 30 minutes of baking
and the second finished the 1 hour baking time. This
showed the need for turn-down capability for oven
baking. The latest Wonderwerk stove, which I had left
at Aprovecho, would very likely have done it with only
one load of fuel, because of better turn-down and more
efficient burning.</span><o:p></o:p></p>
</div>
<div>
<p class="MsoNormal"> <o:p></o:p></p>
</div>
<div>
<p class="MsoNormal"><span
style="font-size:10.0pt;font-family:"Arial","sans-serif"">I
hope you enjoy looking through the hypothesis.</span><o:p></o:p></p>
</div>
<div>
<p class="MsoNormal"><span
style="font-size:10.0pt;font-family:"Arial","sans-serif"">Kirk
H.</span><o:p></o:p></p>
</div>
<div>
<p class="MsoNormal"><span
style="font-size:10.0pt;font-family:"Arial","sans-serif"">Santa
Rosa, CA. USA</span><o:p></o:p></p>
</div>
<p class="MsoNormal"><br>
<br>
<br>
<o:p></o:p></p>
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