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</o:shapelayout></xml><![endif]--></head><body bgcolor=white lang=EN-ZA link=blue vlink=purple><div class=WordSection1><p class=MsoNormal><span style='font-size:11.0pt;font-family:"Calibri","sans-serif";color:#1F497D'>As to solvents, try pyridine. As I recall that takes up everything but the really low-hydrogen polyaromatics.<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'>Philip<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 lang=EN-US style='font-size:10.0pt;font-family:"Tahoma","sans-serif";color:windowtext'>From:</span></b><span lang=EN-US style='font-size:10.0pt;font-family:"Tahoma","sans-serif";color:windowtext'> Stoves [mailto:stoves-bounces@lists.bioenergylists.org] <b>On Behalf Of </b>Paul Medwell<br><b>Sent:</b> Friday, September 2, 2016 9:22 PM<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 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<o:p></o:p></p><div><p class=MsoNormal>On 2/09/2016 11:34 PM, Philip Lloyd wrote:<o:p></o:p></p></div><blockquote style='margin-top:5.0pt;margin-bottom:5.0pt'><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.</span><o:p></o:p></p><p class=MsoNormal><span style='font-size:11.0pt;font-family:"Calibri","sans-serif";color:#1F497D'> </span><o:p></o:p></p><p class=MsoNormal><span style='font-size:11.0pt;font-family:"Calibri","sans-serif";color:#1F497D'>Prof Philip Lloyd</span><o:p></o:p></p><p class=MsoNormal><span style='font-size:11.0pt;font-family:"Calibri","sans-serif";color:#1F497D'>Energy Institute, CPUT</span><o:p></o:p></p><p class=MsoNormal><span style='font-size:11.0pt;font-family:"Calibri","sans-serif";color:#1F497D'>SARETEC, Sachs Circle</span><o:p></o:p></p><p class=MsoNormal><span style='font-size:11.0pt;font-family:"Calibri","sans-serif";color:#1F497D'>Bellville</span><o:p></o:p></p><p class=MsoNormal><span style='font-size:11.0pt;font-family:"Calibri","sans-serif";color:#1F497D'>Tel 021 959 4323</span><o:p></o:p></p><p class=MsoNormal><span style='font-size:11.0pt;font-family:"Calibri","sans-serif";color:#1F497D'>Cell 083 441 5247</span><o:p></o:p></p><p class=MsoNormal><span style='font-size:11.0pt;font-family:"Calibri","sans-serif";color:#1F497D'>PA Nadia 021 959 4330</span><o:p></o:p></p><p class=MsoNormal><span style='font-size:11.0pt;font-family:"Calibri","sans-serif";color:#1F497D'> </span><o:p></o:p></p><p class=MsoNormal><span style='font-size:11.0pt;font-family:"Calibri","sans-serif";color:#1F497D'> </span><o:p></o:p></p><p class=MsoNormal><span style='font-size:11.0pt;font-family:"Calibri","sans-serif";color:#1F497D'> </span><o:p></o:p></p><div><div style='border:none;border-top:solid #B5C4DF 1.0pt;padding:3.0pt 0cm 0cm 0cm'><p class=MsoNormal><b><span lang=EN-US style='font-size:10.0pt;font-family:"Tahoma","sans-serif";color:windowtext'>From:</span></b><span lang=EN-US style='font-size:10.0pt;font-family:"Tahoma","sans-serif";color:windowtext'> Stoves [<a 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</span><o:p></o:p></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><br><o:p></o:p></p><pre>Doc / Dr TLUD / Prof. Paul S. Anderson, PhD<o:p></o:p></pre><pre>Email: <a 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 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><br><o:p></o:p></p><pre>_______________________________________________<o:p></o:p></pre><pre>Stoves mailing list<o:p></o:p></pre><pre> <o:p></o:p></pre><pre>to Send a Message to the list, use the email address<o:p></o:p></pre><pre><a href="mailto:stoves@lists.bioenergylists.org">stoves@lists.bioenergylists.org</a><o:p></o:p></pre><pre> <o:p></o:p></pre><pre>to UNSUBSCRIBE or Change your List Settings use the web page<o:p></o:p></pre><pre><a href="http://lists.bioenergylists.org/mailman/listinfo/stoves_lists.bioenergylists.org">http://lists.bioenergylists.org/mailman/listinfo/stoves_lists.bioenergylists.org</a><o:p></o:p></pre><pre> <o:p></o:p></pre><pre>for more Biomass Cooking Stoves, News and Information see our web site:<o:p></o:p></pre><pre><a href="http://stoves.bioenergylists.org/">http://stoves.bioenergylists.org/</a><o:p></o:p></pre><pre> <o:p></o:p></pre></blockquote><p class=MsoNormal><br><br><br><br><br><o:p></o:p></p><pre>_______________________________________________<o:p></o:p></pre><pre>Stoves mailing list<o:p></o:p></pre><pre> <o:p></o:p></pre><pre>to Send a Message to the list, use the email address<o:p></o:p></pre><pre><a href="mailto:stoves@lists.bioenergylists.org">stoves@lists.bioenergylists.org</a><o:p></o:p></pre><pre> <o:p></o:p></pre><pre>to UNSUBSCRIBE or Change your List Settings use the web page<o:p></o:p></pre><pre><a href="http://lists.bioenergylists.org/mailman/listinfo/stoves_lists.bioenergylists.org">http://lists.bioenergylists.org/mailman/listinfo/stoves_lists.bioenergylists.org</a><o:p></o:p></pre><pre> <o:p></o:p></pre><pre>for more Biomass Cooking Stoves, News and Information see our web site:<o:p></o:p></pre><pre><a href="http://stoves.bioenergylists.org/">http://stoves.bioenergylists.org/</a><o:p></o:p></pre><pre> <o:p></o:p></pre></blockquote><p class=MsoNormal> <o:p></o:p></p><p class=MsoNormal><br><br><br><o:p></o:p></p><pre>_______________________________________________<o:p></o:p></pre><pre>Stoves mailing list<o:p></o:p></pre><pre><o:p> </o:p></pre><pre>to Send a Message to the list, use the email address<o:p></o:p></pre><pre><a href="mailto:stoves@lists.bioenergylists.org">stoves@lists.bioenergylists.org</a><o:p></o:p></pre><pre><o:p> </o:p></pre><pre>to UNSUBSCRIBE or Change your List Settings use the web page<o:p></o:p></pre><pre><a href="http://lists.bioenergylists.org/mailman/listinfo/stoves_lists.bioenergylists.org">http://lists.bioenergylists.org/mailman/listinfo/stoves_lists.bioenergylists.org</a><o:p></o:p></pre><pre><o:p> </o:p></pre><pre>for more Biomass Cooking Stoves, News and Information see our web site:<o:p></o:p></pre><pre><a href="http://stoves.bioenergylists.org/">http://stoves.bioenergylists.org/</a><o:p></o:p></pre><pre><o:p> </o:p></pre></blockquote><p class=MsoNormal><o:p> </o:p></p></div></body></html>