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<p class="MsoNormal"><span style="mso-fareast-language:EN-US">I think that won’t work. The bands will kill the combustion where they touch the fuel.
<o:p></o:p></span></p>
<p class="MsoNormal"><span style="mso-fareast-language:EN-US"><o:p> </o:p></span></p>
<p class="MsoNormal"><span style="mso-fareast-language:EN-US">You have to have air enough to burn and distribute it through the gases as they rise and burn.
<o:p></o:p></span></p>
<p class="MsoNormal"><span style="mso-fareast-language:EN-US"><o:p> </o:p></span></p>
<p class="MsoNormal"><span style="mso-fareast-language:EN-US">Years ago I was building some brick stoves with GIZ in Malawi. We were stacking the brick in the shape of the stove that we intended to, later, assemble with wet clay/sand. We were testing the boiling
pace as a primitive efficiency test.<o:p></o:p></span></p>
<p class="MsoNormal"><span style="mso-fareast-language:EN-US"><o:p> </o:p></span></p>
<p class="MsoNormal"><span style="mso-fareast-language:EN-US">We found the best combination (later the Esperandza Stove) and built one properly, plastered and all, plugs to fill cleaning hole and everything. Proper pot rests. I tell you, the stacked lose
bricks outperformed the Esperandza stove, which was rolled out in the tens of thousands. $8 installed by a contractor, BTW.<o:p></o:p></span></p>
<p class="MsoNormal"><span style="mso-fareast-language:EN-US"><o:p> </o:p></span></p>
<p class="MsoNormal"><span style="mso-fareast-language:EN-US">So I think you should just stack bricks and see what works. Keep the gaps small. Imagine various implementations.
<o:p></o:p></span></p>
<p class="MsoNormal"><span style="mso-fareast-language:EN-US"><o:p> </o:p></span></p>
<p class="MsoNormal"><span style="mso-fareast-language:EN-US">If you can get the fire enclosed without increasing smoke, then you have progress. It the smoke drops, enclose it more, until it squeaks. Add air at brick 3 until it is clean. Something like that.
<o:p></o:p></span></p>
<p class="MsoNormal"><span style="mso-fareast-language:EN-US"><o:p> </o:p></span></p>
<p class="MsoNormal"><span style="mso-fareast-language:EN-US">And let us know!<o:p></o:p></span></p>
<p class="MsoNormal"><span style="mso-fareast-language:EN-US"><o:p> </o:p></span></p>
<p class="MsoNormal"><span style="mso-fareast-language:EN-US">Regards<o:p></o:p></span></p>
<p class="MsoNormal"><span style="mso-fareast-language:EN-US">Crispin<o:p></o:p></span></p>
<p class="MsoNormal"><span style="mso-fareast-language:EN-US"><o:p> </o:p></span></p>
<p class="MsoNormal"><span style="mso-fareast-language:EN-US">Here is a photo of dung burning in a Vesto stove. Notice the unusual colours. Burned cleanly, there is always some green. That is a result of the minerals in the material. It doesn’t smoke at
all. Enough of this “dung is smoky”. There is no smoke in dung. <o:p></o:p></span></p>
<p class="MsoNormal"><span style="mso-fareast-language:EN-US"><o:p> </o:p></span></p>
<p class="MsoNormal"><img width="378" height="311" style="width:3.9375in;height:3.2395in" id="Picture_x0020_1" src="cid:image001.png@01D92A83.57E7ED40"><span style="mso-fareast-language:EN-US"><o:p></o:p></span></p>
<p class="MsoNormal"><span style="mso-fareast-language:EN-US"><o:p> </o:p></span></p>
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<p class="MsoNormal"><b><span lang="EN-US">From:</span></b><span lang="EN-US"> Stoves <stoves-bounces@lists.bioenergylists.org>
<b>On Behalf Of </b>Kevin McLean<br>
<br>
<o:p></o:p></span></p>
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<p class="MsoNormal"><o:p> </o:p></p>
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<p class="MsoNormal">Can this be accomplished by making the bands taller?<o:p></o:p></p>
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<p class="MsoNormal"><o:p> </o:p></p>
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<p class="MsoNormal">On Tue, Jan 17, 2023, 3:32 PM Crispin Pemberton-Pigott <<a href="mailto:crispinpigott@outlook.com">crispinpigott@outlook.com</a>> wrote:<o:p></o:p></p>
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