<html><head><meta http-equiv="Content-Type" content="text/html charset=utf-8"></head><body style="word-wrap: break-word; -webkit-nbsp-mode: space; -webkit-line-break: after-white-space;" class=""><div class="">Tom, and ccs (and adding Kirk Harris - who has reported some high energy-in-char numbers)</div><div class=""><br class=""></div><div class=""><span class="Apple-tab-span" style="white-space:pre"> </span></div><div class=""><br class=""></div><div class=""><span class="Apple-tab-span" style="white-space:pre"> </span>1. Can you clarify what you mean by ”similar gasifiers? I certainly agree that 25% energy capture in Norbert’s system would be hard - but I don’t think he is calling his present heating approach a “gasifier”</div><div class=""><br class=""></div><div class=""> <span class="Apple-tab-span" style="white-space:pre"> </span>2, I think/hope Kirk is over 25% char by weight (over 30+% energy) char for his TLUDs. The numbers I have been citing are only TLUDs - which would be a major shift for Norbert. Stopping a “burn” to maximize char needs a name.</div><div class=""><span class="Apple-tab-span" style="white-space:pre"> </span></div><div class="">Ron</div><div class=""><br class=""></div><br class=""><div><blockquote type="cite" class=""><div class="">On Dec 18, 2017, at 5:15 PM, Tom Miles <<a href="mailto:tmiles@trmiles.com" class="">tmiles@trmiles.com</a>> wrote:</div><br class="Apple-interchange-newline"><div class=""><meta http-equiv="content-type" content="text/html; charset=utf-8" class=""><div dir="auto" class="">Similar Gasifiers get 15%-20% yields. I would question 25% or more. <br class=""><br class=""><div class="">T R Miles Technical Consultants Inc.<div class=""><div class=""><span class="Apple-style-span" style="-webkit-tap-highlight-color: rgba(26, 26, 26, 0.296875); -webkit-composition-fill-color: rgba(175, 192, 227, 0.230469); -webkit-composition-frame-color: rgba(77, 128, 180, 0.230469); "><a href="mailto:tmiles@trmiles.com" class="">tmiles@trmiles.com</a></span></div><div class=""><span class="Apple-style-span" style="-webkit-tap-highlight-color: rgba(26, 26, 26, 0.292969); -webkit-composition-fill-color: rgba(175, 192, 227, 0.226562); -webkit-composition-frame-color: rgba(77, 128, 180, 0.226562);">Sent from mobile. </span></div></div></div><div class=""><br class="">On Dec 18, 2017, at 6:50 PM, Norbert Senf <<a href="mailto:norbert.senf@gmail.com" class="">norbert.senf@gmail.com</a>> wrote:<br class=""><br class=""></div><blockquote type="cite" class=""><div class=""><div dir="ltr" class=""><div class="gmail_extra"><div class="gmail_quote">On Mon, Dec 18, 2017 at 6:22 PM, Ronal W. Larson <span dir="ltr" class=""><<a href="mailto:rongretlarson@comcast.net" target="_blank" class="">rongretlarson@comcast.net</a>></span> wrote:<br class=""><blockquote class="gmail_quote" style="margin:0 0 0 .8ex;border-left:1px #ccc solid;padding-left:1ex"><div style="word-wrap:break-word" class=""><div class=""><span class=""></span><div class=""><span class="m_-8389741761103720626Apple-tab-span" style="white-space:pre-wrap"> </span><b class="">[RWL: I sometimes hear of reverse flow in chimneys. Not to worry in your systems?</b></div></div></div></blockquote><div class=""><br class=""></div><div class="">It can be an issue with cold starts, but is not a safety concern because there will be noxious smoke, which is obvious. There are various workarounds/fixes for this<br class=""></div><div class="">In normal operation, the heater is warm, and will keep powering the chimney draft long after the fire is out until all the heat is sucked out of the mass.<br class=""></div><div class="">During the charcoal phase, when the thermal mass has been heated, chimney draft is never an issue.<br class=""><br class=""></div><div class="">This is quite the opposite of "airtight" stoves that you fill with wood and then turn down for an overnight burn. During the middle-of-the-night charcoal phase, draft can get low and house depressurization can cause a reversal and CO spillage. <br class=""></div><blockquote class="gmail_quote" style="margin:0 0 0 .8ex;border-left:1px #ccc solid;padding-left:1ex"><div style="word-wrap:break-word" class=""><div class=""><br class=""><div class=""><span class="m_-8389741761103720626Apple-tab-span" style="white-space:pre-wrap"> </span><b class="">[RWL: No - medium . I almost never varied a percentage point from 25% by weight (multiply by about 30/18 to get energy). But we hear 30% by weight sometimes (low temperature char).</b></div></div></div></blockquote><div class=""><br class=""></div><div class="">Thanks, interesting to know what a good number for yield would be ...............N<br clear="all" class=""></div></div><br class="">-- <br class=""><div class="gmail_signature" data-smartmail="gmail_signature">Norbert Senf<br class="">Masonry Stove Builders<br class="">25 Brouse Road, RR 5<br class="">Shawville Québec J0X 2Y0<br class="">819.647.5092<br class=""><a href="http://www.heatkit.com/" target="_blank" class="">www.heatkit.com</a></div>
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