<html><head><meta http-equiv="Content-Type" content="text/html; charset=utf-8"></head><body style="word-wrap: break-word; -webkit-nbsp-mode: space; line-break: after-white-space;" class=""><div dir="auto" style="word-wrap: break-word; -webkit-nbsp-mode: space; line-break: after-white-space;" class=""><div dir="auto" style="word-wrap: break-word; -webkit-nbsp-mode: space; line-break: after-white-space;" class=""><div class="">Aaron and list: cc Norm - working also big TLUDs - and is on something like model 20</div><div class=""><span class="Apple-tab-span" style="white-space:pre"> </span>and Alex - one of the best early researchers on TLUDs - especially big ones. - a commenter at Aaron’s site)</div><div class=""><br class=""></div><div class=""><span class="Apple-tab-span" style="white-space:pre"> </span>1. Could you supply us a quick sketch ? </div><div class=""><span class="Apple-tab-span" style="white-space:pre"> </span>Presumably the second trash can lid is used for your secondary air control?</div><div class=""><span class="Apple-tab-span" style="white-space:pre"> </span>Can you explain that?</div><div class=""><span class="Apple-tab-span" style="white-space:pre"> </span>Any way of estimating the ratios of secondary air to primary air as you adjust?</div><div class=""><span class="Apple-tab-span" style="white-space:pre"> </span>At what timse in the video do you think the flame is best?</div><div class=""><span class="Apple-tab-span" style="white-space:pre"> </span>Of knowing an optimum setting?</div><div class=""><br class=""></div><div class=""><span class="Apple-tab-span" style="white-space:pre"> </span>2. What is the weight of the two bags of pellets?</div><div class=""><span class="Apple-tab-span" style="white-space:pre"> </span>Have you weighed the produced char?</div><div class=""><span class="Apple-tab-span" style="white-space:pre"> </span>If so more than once did you record the run times exactly? Time, input and char weights eeded to calculate power levels.</div><div class=""><br class=""></div><div class=""><span class="Apple-tab-span" style="white-space:pre"> </span>3. The porch heating is accomplished mostly by the large trash can I guess - how much by the two 2-foot stove pipes?</div><div class=""><span class="Apple-tab-span" style="white-space:pre"> </span>The dimensions of the can?</div><div class=""><br class=""></div><div class=""><span class="Apple-tab-span" style="white-space:pre"> </span>4. The flames are obviously not below a porch roof - was this entirely outdoors? Have you done tests on a porch yet?</div><div class=""><span class="Apple-tab-span" style="white-space:pre"> </span></div><div class=""><span class="Apple-tab-span" style="white-space:pre"> </span>5. Not clear whether you also have primary air control. Should be easier to do than your secondary air control.</div><div class=""><br class=""></div><span class="Apple-tab-span" style="white-space:pre"> </span>6. <span class="Apple-tab-span" style="white-space:pre"> </span>What is your mechanism for deciding when to stop the pyrolysis and how do you do that?</div><div dir="auto" style="word-wrap: break-word; -webkit-nbsp-mode: space; line-break: after-white-space;" class=""><br class=""></div><div dir="auto" style="word-wrap: break-word; -webkit-nbsp-mode: space; line-break: after-white-space;" class=""><span class="Apple-tab-span" style="white-space:pre"> </span>7. One insert question below</div><div dir="auto" style="word-wrap: break-word; -webkit-nbsp-mode: space; line-break: after-white-space;" class=""><br class=""></div><div dir="auto" style="word-wrap: break-word; -webkit-nbsp-mode: space; line-break: after-white-space;" class="">Ron<br class=""><div><br class=""><blockquote type="cite" class=""><div class="">On Dec 1, 2021, at 6:26 PM, A J <<a href="mailto:awingle@hotmail.com" class="">awingle@hotmail.com</a>> wrote:</div><br class="Apple-interchange-newline"><div class="">
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<div class="">Here is a video I made of a TLUD Natural Draft stove that has adjustable Secondary Air. This stove is burning wood pellets. </div>
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<div class=""> The long wavy flames have as much secondary air turned off as possible. The tight blue flames are the result of almost maximum secondary air pre-mixed into the wood gas. During the video I am adjusting the air flow up and down to show the results
of different air/fuel ratios.</div>
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<div class="">I believe these kinds of flames are only possible with very good pre mixing, which until now has been very difficult to control and keep lit. </div>
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<div class=""><a href="https://youtu.be/yKPfAlPXCMY" class="">https://youtu.be/yKPfAlPXCMY</a><br class="">
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<div class="">Anyway, I thought someone around here might be interested in these results. </div>
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<div class="">Feel free to Email me at <a href="mailto:awingle@hotmail.com" class="">awingle@hotmail.com</a></div>
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<div class="">Thank you for your time,</div>
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<div class="">Aaron Wingle</div></div></div></blockquote><div><br class=""></div> <snip></div><div><br class=""></div><div><b class=""><u class="">RWL: Your added message on the next day:</u></b><br class=""></div><div><br class=""></div><div><div class="">My apologies for stating this was adjustable primary air. This stove has adjustable Secondary Air.</div><div class=""><br class=""></div><div class="">Adjustable Secondary Air Stove</div><div class=""><div class=""><a href="https://youtu.be/yKPfAlPXCMY" class="">https://youtu.be/yKPfAlPXCMY</a><br class=""></div><div class=""><br class=""></div><div class="">Veronica,</div><div class=""><br class=""></div><div class="">The stove shown in the video is natural draft. It's a very simple stove made from:</div><div style="font-size: 19px;" class="">1 ~ large trashcan</div><div style="font-size: 19px;" class="">1 ~ 4" damper</div><div style="font-size: 19px;" class="">1 ~ 4" Stove pipe 2' Long</div><div style="font-size: 19px;" class="">1 ~ 8" stove pipe 2' long</div><div style="font-size: 19px;" class="">2 ~ Trash can lids </div><div style="font-size: 19px;" class="">1 ~ 8" stove pipe end cap</div><div class=""><br class=""></div><div class="">It was built as a porch heater and actually works very well as one. The stove holds 2 bags of pellets and burns for 5~6 hours and leaves the biochar. The long tall chimney is unnecessary though some room must be given for pre~ mixing. </div><div class=""><br class=""></div><div class=""><span class="Apple-tab-span" style="white-space:pre"> </span><b class="">{RWL: I don’t see a “long tall” dimension.</b></div><div class=""><br class=""></div><div class="">Thank you for your very nice comment.</div><div class=""><br class=""></div>Aaron Wingle<br class=""></div></div><div><br class=""></div><br class=""></div>
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