<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 class=""><br class=""></div>Tom and list:<div class=""><br class=""></div><div class=""><span class="Apple-tab-span" style="white-space:pre"> </span>Nice comment. Thanks. One comment re this sentence (with my added emphases):</div><div class=""><br class=""></div><div class=""><span class="Apple-tab-span" style="white-space:pre"> </span>"<i class="">In the biochar case there can be <u class=""><b class="">more </b></u>benefit from the agronomic uses - reduced cash for fertilizer, reduced labor for watering, improved yield, etc. - <b class=""><u class="">than</u></b> for carbon sequestration.”</i></div><div class=""><span style="font-style: normal;" class=""><br class=""></span></div><div class=""><span class="Apple-tab-span" style="font-style: normal; white-space: pre;"> </span><b class="">[RWL: Some (not you) may think these are in opposition. Not so, one gets both ag and climate benefits, with zero conflict. And there is more - such as income generation for char-making stove users. And more.</b></div><div class=""><span style="font-style: normal;" class=""><br class=""></span></div><div class=""><span style="font-style: normal;" class="">Ron </span><i class=""> </i></div><div class=""><br class=""><div><br class=""><blockquote type="cite" class=""><div class="">On Jan 27, 2020, at 4:28 PM, Tom Miles <<a href="mailto:trmilesjr@gmail.com" class="">trmilesjr@gmail.com</a>> wrote:</div><br class="Apple-interchange-newline"><div class=""><div dir="ltr" class="">If the fuel conversion of the stove is based on performance without char burnout then there is no penalty for removing residual char for other purposes. In the Lifeline cases cited the uses appeared to be essential activities in the household. <div class=""><br class=""></div><div class="">In the biochar case there can be more benefit from the agronomic uses - reduced cash for fertilizer, reduced labor for watering, improved yield, etc. - than for carbon sequestration. Depending on the application and the fuel it may be more practical to make the biochar in other devices but it may be suited to small garden plots. </div></div><br class=""><div class="gmail_quote"><div dir="ltr" class="gmail_attr">On Mon, Jan 27, 2020 at 3:15 PM Crispin Pemberton-Pigott <<a href="mailto:crispinpigott@outlook.com" class="">crispinpigott@outlook.com</a>> wrote:<br class=""></div><blockquote class="gmail_quote" style="margin:0px 0px 0px 0.8ex;border-left:1px solid rgb(204,204,204);padding-left:1ex">
<div lang="EN-CA" class="">
<div class="gmail-m_7524524887906686246WordSection1"><p class="MsoNormal"><span class="">Thank you Tom.<u class=""></u><u class=""></u></span></p><p class="MsoNormal"><span class=""><u class=""></u> <u class=""></u></span></p><p class="MsoNormal"><span class="">For CDM projects, there is no consideration given for the removal of char in the fuel efficiency calculations, which underlies the determine of generation of CER’s. There easily cold be, but there
is not. <u class=""></u><u class=""></u></span></p><p class="MsoNormal"><span class=""><u class=""></u> <u class=""></u></span></p><p class="MsoNormal"><span class="">Only a reduction of fuel consumption is considered, and that is field-assessed. If one were to argue that the char was being sequestered in an inaccessible and permanent manner, one could propose
a new rule for the calculation of GHG’s considering retained char. <u class=""></u><u class=""></u></span></p><p class="MsoNormal"><span class=""><u class=""></u> <u class=""></u></span></p><p class="MsoNormal"><span class="">The only thing they record for stove projects is fuel mass harvested for cooking. Obviously there is an implication that the carbon is (largely) released as CO2.
<u class=""></u><u class=""></u></span></p><p class="MsoNormal"><span class=""><u class=""></u> <u class=""></u></span></p><p class="MsoNormal"><span class="">Regards<u class=""></u><u class=""></u></span></p><p class="MsoNormal"><span class="">Crispin<u class=""></u><u class=""></u></span></p><p class="MsoNormal"><span class=""><u class=""></u> <u class=""></u></span></p><p class="MsoNormal"><b class=""><span lang="EN-US" class="">From:</span></b><span lang="EN-US" class=""> Stoves <<a href="mailto:stoves-bounces@lists.bioenergylists.org" target="_blank" class="">stoves-bounces@lists.bioenergylists.org</a>>
<b class="">On Behalf Of </b>Tom Miles<br class="">
<b class="">Sent:</b> Monday, January 27, 2020 17:54<br class="">
<b class="">To:</b> <a href="mailto:stoves@bioenergylists.org" target="_blank" class="">stoves@bioenergylists.org</a><br class="">
<b class="">Subject:</b> [Stoves] Charcoal and Stoves<u class=""></u><u class=""></u></span></p><p class="MsoNormal"><u class=""></u> <u class=""></u></p>
<div class=""><p class="MsoNormal">It was an eventful gathering at the ETHOS meeting in Kirkland, Washington, USA, this weekend. Many thanks to Elisa Derby, Nordica MaCarty, the ETHOS board and volunteers for our 20th year celebration. <u class=""></u><u class=""></u></p>
<div class=""><p class="MsoNormal"><u class=""></u> <u class=""></u></p>
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<div class=""><p class="MsoNormal">It was apparent to me from the advanced modelling, lab performance data, field tests and field experiences which were reported that charcoal is an important component of household energy and food security. Within the stove charcoal combustion
contributes high peak temperatures which can improve performance and reduce emissions. This is demonstrated in the addition of the "Jet-Flame" to a Rocket Stove, which I view as a charcoal burner. By introducing a little pressurized air at the grate you can
"low on the coals". The addition of uniformly distributed undergrate air, with even a little pressure, is enough to improve char combustion and shorten the flame, which should indicate increased carbon monoxide burnout. Aprovecho showcased the Jet-Flame at
ETHOS. Their testing showed nearly complete charcoal burnout. <u class=""></u><u class=""></u></p>
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<div class=""><p class="MsoNormal"><a href="https://www.chinadaily.com.cn/a/201911/08/WS5dc507d8a310cf3e355763b2_2.html" target="_blank" class="">https://www.chinadaily.com.cn/a/201911/08/WS5dc507d8a310cf3e355763b2_2.html</a><u class=""></u><u class=""></u></p>
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<div class=""><p class="MsoNormal"><u class=""></u> <u class=""></u></p>
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<div class=""><p class="MsoNormal"><span style="font-size:12pt;font-family:Arial,sans-serif" class="">Others from Lifeline said there were circumstances where the charcoal is very important for other uses in the household and that burning out charcoal would not be desired. Someone
with a better memory can remind me of what those uses were, </span><u class=""></u><u class=""></u></p>
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<div class=""><p class="MsoNormal"><u class=""></u> <u class=""></u></p>
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<div class=""><p class="MsoNormal"><span style="font-size:12pt;font-family:Arial,sans-serif" class="">Biochar advocates want to make charcoal for use in the soil while cooking, which is usually accomplished by removing charcoal faster than you are consume it. </span><u class=""></u><u class=""></u></p>
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<div class=""><p class="MsoNormal"><u class=""></u> <u class=""></u></p>
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<div class=""><p class="MsoNormal"><span style="font-size:12pt;font-family:Arial,sans-serif" class="">In cases where we want to leave residual charcoal or remove it to make biochar we need to balance the performance benefits of burning the charcoal with the household needs or
food security - biochar - benefits. We have new tools but we need to find out how best to use them. </span><u class=""></u><u class=""></u></p>
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<div class=""><p class="MsoNormal"><u class=""></u> <u class=""></u></p>
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<div class=""><p class="MsoNormal"><span style="font-size:12pt;font-family:Arial,sans-serif" class="">Tom</span><u class=""></u><u class=""></u></p>
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<div class=""><p class="MsoNormal"><u class=""></u> <u class=""></u></p>
</div><p class="MsoNormal">-- <u class=""></u><u class=""></u></p>
<div class=""><p class="MsoNormal" style="margin-bottom:12pt">T R Miles Technical Consultants, Inc<br class="">
Portland, OR 97225<u class=""></u><u class=""></u></p>
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</blockquote></div><br clear="all" class=""><div class=""><br class=""></div>-- <br class=""><div dir="ltr" class="gmail_signature">T R Miles Technical Consultants, Inc<br class="">1470 SW Woodward Way<br class="">Portland, OR 97225<br class=""><a href="mailto:tmiles@trmiles.com" target="_blank" class="">tmiles@trmiles.com</a><br class=""><a href="http://www.trmiles.com/" target="_blank" class="">www.trmiles.com</a></div>
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