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<p class="MsoNormal">Hey guys!!<o:p></o:p></p>
<p class="MsoNormal"><o:p> </o:p></p>
<p class="MsoNormal">Tried bottom lit updraft? Of course. Stimulated to do this by Agua Das back around 2003-2004.<o:p></o:p></p>
<p class="MsoNormal"><o:p> </o:p></p>
<p class="MsoNormal">And my successful results were published in Boiling Point back in 2007 <a href="https://woodgas.com/wp-content/uploads/2022/01/BP53-Anderson-14.pdf" target="_blank">Microgasification: What it is and why it works [2007]</a> and have
been available at my websites since then.<o:p></o:p></p>
<p class="MsoNormal"><o:p> </o:p></p>
<p class="MsoNormal">It is the AVUD part of that article (not TLUD). (and the “A” now means Anderson.)<o:p></o:p></p>
<p class="MsoNormal"><o:p> </o:p></p>
<p class="MsoNormal">That was 16 years ago, and 10 years before the 2017 article that Dean brought to our attention (below). You will notice the great similarity between the diagrams in my article and the 2017 item.
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<p class="MsoNormal"><o:p> </o:p></p>
<p class="MsoNormal">MAIN difference is the ability of AVUD to produce biochar, as was shown in about 2010 when the AVUD design was used in the Chip Energy Biomass Furnace, the product of an SBIR grant from the US EPA. Worked well, but not (yet) a commercial
success. <span style="font-size:12.0pt;font-family:Roboto;color:#006D21;background:white">
<a href="http://www.chipenergy.com/pdf/Biomass-Furnace.pdf">www.chipenergy.com/pdf/Biomass-Furnace.pdf</a>
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<p class="MsoNormal"><span style="font-size:12.0pt;font-family:Roboto;color:#006D21;background:white"><o:p> </o:p></span></p>
<p class="MsoNormal"><span style="color:black;background:white">About updraft and cookstoves. My AVUD unit can be quite small, even for cooking. But it is not viable, in my opinion, because it operates on the basis of trickle-in fuel. The would be manual
for a stove (too much attention to fuel input, even worse than attending to a Rocket Stove, or if automated, too expensive to operationalize for a household, especially if an impoverished household.<o:p></o:p></span></p>
<p class="MsoNormal"><span style="color:black;background:white"><o:p> </o:p></span></p>
<p class="MsoNormal"><span style="color:black;background:white">Perhaps this message will save someone from reinventing a wheel.
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<p class="MsoNormal">Did anyone try a bottom lit updraft?<o:p></o:p></p>
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<p class="MsoNormal"><o:p> </o:p></p>
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<p class="MsoNormal"><span style="font-size:16.5pt;font-family:Roboto;color:#1F1F1F"><a href="https://www.sciencedirect.com/science/article/pii/S1876610217327546">https://www.sciencedirect.com/science/article/pii/S1876610217327546</a></span><o:p></o:p></p>
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<p class="MsoNormal">On Wed, Aug 30, 2023 at 7:41 PM Anderson, Paul <<a href="mailto:psanders@ilstu.edu" target="_blank">psanders@ilstu.edu</a>> wrote:<o:p></o:p></p>
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<p class="MsoNormal" style="mso-margin-top-alt:auto;mso-margin-bottom-alt:auto">I agree with Kirk. Regardless of how precise the holes are made to give a ratio of total AREA for primary and secondary air, the amount of air passing through those holes can
be highly variable because of pressure of push or negative pressure of pull that can be influenced by chimney height or fans (with different speeds) or physics spaces / restrictions.<o:p></o:p></p>
<p class="MsoNormal" style="mso-margin-top-alt:auto;mso-margin-bottom-alt:auto">Paul <o:p></o:p></p>
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<p class="MsoNormal" style="mso-margin-top-alt:auto;mso-margin-bottom-alt:auto">Doc / Dr TLUD / Paul S. Anderson, PhD
<o:p></o:p></p>
<p class="MsoNormal" style="mso-margin-top-alt:auto;mso-margin-bottom-alt:auto">Email:
<a href="mailto:psanders@ilstu.edu" target="_blank"><span style="color:#0563C1">psanders@ilstu.edu</span></a> Skype: paultlud Mobile & WhatsApp: 309-531-4434<o:p></o:p></p>
<p class="MsoNormal" style="mso-margin-top-alt:auto;mso-margin-bottom-alt:auto">Website:
<a href="https://woodgas.com/" target="_blank"><span style="color:#0563C1">https://woodgas.com</span></a> see Resources page for 2023
<i>“Roadmap for Climate Intervention with Biochar”</i> and 2020 white paper, 2) RoCC kilns, and 3) TLUD stove technology.
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