<div dir="ltr"><div class="gmail_default" style="font-size:small">Ron, Crispin, thank you for the encouraging words.</div><div class="gmail_default" style="font-size:small"><br></div><div class="gmail_default" style="font-size:small">All,</div><div class="gmail_default" style="font-size:small"><br></div><div class="gmail_default" style="font-size:small">My (Sun24) primary and immediate focus is on the dissemination of the idea of using rocks or brick pieces to improve traditional <a href="https://docs.google.com/document/d/1Nww3FDj0l-VjzdC5NOCmbe_dLPIPBUD-i4I5WDc4Vsw/edit">wood</a> and <a href="https://docs.google.com/document/d/14iG6rVoa6JHTgXmVGEGIf048_yWoOK_Jxun8aKblOyo/edit?usp=sharing">charcoal</a> stoves. With help from SNV (<a href="https://drive.google.com/file/d/1bQ8_htCs-eiVT7LCkQQ-by8Nz-Gi4ciL/view?usp=sharing">lab testing</a>) and hundreds of women in several developing countries, we have determined that the simple, free act of putting rocks in a cookstove makes that cookstove more efficient. We expect to conclude extensive training throughout Uganda and Kenya in a couple months and expand into many other countries very soon.</div><div class="gmail_default" style="font-size:small"><br></div><div class="gmail_default" style="font-size:small">We are also working on an instructional video that can be translated into any language. We hope to upload the videos to YouTube and spread them by social media.</div><div class="gmail_default" style="font-size:small"><br></div><div class="gmail_default" style="font-size:small">We will continue to test new ideas, such as the 2-burner stove, as Ron indicated.</div><div class="gmail_default" style="font-size:small"><br></div><div class="gmail_default" style="font-size:small">I hope that you will improve on these ideas.</div><div><div dir="ltr" class="gmail_signature" data-smartmail="gmail_signature"><div dir="ltr"><div><div dir="ltr"><div><div dir="ltr"><div><div dir="ltr"><div><div dir="ltr"><div dir="ltr"><div dir="ltr"><div dir="ltr"><div dir="ltr"><div dir="ltr"><div dir="ltr"><div dir="ltr"><div dir="ltr"><div dir="ltr"><div dir="ltr"><div dir="ltr"><div dir="ltr"><div><br></div><div>Thank you,<br></div><div>Kevin</div><div dir="ltr"><i><br></i></div><div dir="ltr"><i>Kevin McLean, President</i></div><div dir="ltr"><div><i>Sun24</i></div><div><i><a href="https://sun24.solar" target="_blank">https://sun24.solar</a> <a href="https://docs.google.com/document/d/1ZryS7gQ1q3zKLZPM2KcXdtIHbOYQp4PbloPqMvrlZ5Y/edit?usp=sharing" target="_blank">Sun24 Cookstoves Overview</a><br></i></div><div><i>Tampa, Florida, USA</i></div><div><i><span title="Call with Google Voice"><span title="Call with Google Voice"><span title="Call with Google Voice">+1 (813) 505-3340</span></span></span></i></div><div><br></div><div> <img src="https://docs.google.com/uc?export=download&id=13teZQbnv_6ek6JkEy-4n0yyUVTrl3M2W&revid=0B8zNcWsuiuj3N2RuVFFYL3EvdElxR1lDcm9QQVlaL0F4VnVFPQ" width="200" height="200"> </div><div><br><i><span title="Call with Google Voice"><span title="Call with Google Voice"><span title="Call with Google Voice"><br><br></span></span></span></i></div></div></div></div></div></div></div></div></div></div></div></div></div></div></div></div></div></div></div></div></div></div></div></div></div><br></div><br><div class="gmail_quote"><div dir="ltr" class="gmail_attr">On Fri, Apr 26, 2019 at 1:31 PM Ronal Larson <<a href="mailto:rongretlarson@comcast.net">rongretlarson@comcast.net</a>> wrote:<br></div><blockquote class="gmail_quote" style="margin:0px 0px 0px 0.8ex;border-left:1px solid rgb(204,204,204);padding-left:1ex"><div style="overflow-wrap: break-word;">Kirk and list:<div><br></div><div><span class="gmail-m_4130592727443630149Apple-tab-span" style="white-space:pre-wrap"> </span>See few inserts below.</div><div><br></div><div><div><br><blockquote type="cite"><div>On Apr 25, 2019, at 3:31 PM, Kirk H. <<a href="mailto:gkharris316@comcast.net" target="_blank">gkharris316@comcast.net</a>> wrote:</div><br class="gmail-m_4130592727443630149Apple-interchange-newline"><div><div class="gmail-m_4130592727443630149WordSection1" style="font-family:Helvetica;font-size:12px;font-style:normal;font-variant-caps:normal;font-weight:normal;letter-spacing:normal;text-align:start;text-indent:0px;text-transform:none;white-space:normal;word-spacing:0px;text-decoration:none"><div style="margin:0in 0in 0.0001pt;font-size:11pt;font-family:Calibri,sans-serif">All,</div><div style="margin:0in 0in 0.0001pt;font-size:11pt;font-family:Calibri,sans-serif"><u></u> <u></u></div><div style="margin:0in 0in 0.0001pt;font-size:11pt;font-family:Calibri,sans-serif">Concerning whether this stove is in parallel or series, I see both. Some of the fire, in the back, goes directly to the second pot, that is parallel. Some of the flame from the front hits the first pot and then passes on to the second, that is series. </div></div></div></blockquote><div><span class="gmail-m_4130592727443630149Apple-tab-span" style="white-space:pre-wrap"> </span><b>[RWL: I can agree some but If the first pot allows flame up the sides of the pot, would you agree that has no series aspect?</b></div><div><b><br></b></div><div><b><span class="gmail-m_4130592727443630149Apple-tab-span" style="white-space:pre-wrap"> </span>The main point I didn’t emphasize enough is that Kevin has started with the simplest possible type of Rocket. With almost zero cost, he has added two parallel bricks in front of the normal Rocket opening, This makes the “fuel combustion region” twice as long as normal (the original fuel area only now being minimally used). The pot sitting on these two new added bricks seems to be receiving about half of the useful energy (more or less is now being tested in Uganda). I think this is a brilliant addition to ANY rocket - but Kevin’s Rocket is also near zero cost (his bricks are costing less than a nickel each).</b></div><div><b><br></b></div><div><b><span class="gmail-m_4130592727443630149Apple-tab-span" style="white-space:pre-wrap"> </span>His emphasis on giving away ideas rather than selling products is what makes me so interested in his work. And using church networks for dissemination. And even more low-cost dissemination approaches are in the works!</b></div><div><b><br></b></div><div><b><span class="gmail-m_4130592727443630149Apple-tab-span" style="white-space:pre-wrap"> </span>He is accomplishing a large amount on a minimum budget. Think what could happen with a iittle more money.</b></div><div><b><br></b></div><div><b><span class="gmail-m_4130592727443630149Apple-tab-span" style="white-space:pre-wrap"> </span>I have avoided 3-stone fires for 25 years. A mistake.</b></div><br><blockquote type="cite"><div><div class="gmail-m_4130592727443630149WordSection1" style="font-family:Helvetica;font-size:12px;font-style:normal;font-variant-caps:normal;font-weight:normal;letter-spacing:normal;text-align:start;text-indent:0px;text-transform:none;white-space:normal;word-spacing:0px;text-decoration:none"><div style="margin:0in 0in 0.0001pt;font-size:11pt;font-family:Calibri,sans-serif"><u></u> <u></u></div><div style="margin:0in 0in 0.0001pt;font-size:11pt;font-family:Calibri,sans-serif">The use of grooves instead of a pot stand would decrease the open area, and so increase the flow resistance at the second pot. This may be to direct some heat to the front pot and keep all of the heat from going directly to the small chimney which has the most draft.</div></div></div></blockquote><div><span class="gmail-m_4130592727443630149Apple-tab-span" style="white-space:pre-wrap"> </span><b>[RWL: Nice idea. </b></div><div><b><br></b></div><div><b><span class="gmail-m_4130592727443630149Apple-tab-span" style="white-space:pre-wrap"> </span>Kevin has been putting most of his effort on introducing small rocks for air control. He might be able to achieve the same idea as grooves - with small rocks to similarly increase resistance.</b></div><div><b><br></b></div><div><b><span class="gmail-m_4130592727443630149Apple-tab-span" style="white-space:pre-wrap"> </span>Anyone else have a similar idea to check out?</b></div><div><b><br></b></div><div><b><span class="gmail-m_4130592727443630149Apple-tab-span" style="white-space:pre-wrap"> </span>Anyone seen any earlier use of a first pot in front of a Rocket?</b></div><div><b><br></b></div><div><b><span class="gmail-m_4130592727443630149Apple-tab-span" style="white-space:pre-wrap"> </span>I am still trying to figure out a similar simple modification of TLUDs. Top lighting needs something different.</b></div><div><b><br></b></div><div><b><span class="gmail-m_4130592727443630149Apple-tab-span" style="white-space:pre-wrap"> </span>Note Kevin is working on three other concepts - all in the category of “give-away”. Nothing to sell. His first message a month ago was on rocks to improve air flow below the fuel. Two more concepts in the works: char-making and energy storage. Anyone want to offer their thoughts on these)non-rocket, non-airflow topics?</b></div><div><b><br></b></div><div><b>Ron</b></div><br><blockquote type="cite"><div><div class="gmail-m_4130592727443630149WordSection1" style="font-family:Helvetica;font-size:12px;font-style:normal;font-variant-caps:normal;font-weight:normal;letter-spacing:normal;text-align:start;text-indent:0px;text-transform:none;white-space:normal;word-spacing:0px;text-decoration:none"><div style="margin:0in 0in 0.0001pt;font-size:11pt;font-family:Calibri,sans-serif"><u></u> <u></u></div><div style="margin:0in 0in 0.0001pt;font-size:11pt;font-family:Calibri,sans-serif">Thank you all for this great discussion and information.</div><div style="margin:0in 0in 0.0001pt;font-size:11pt;font-family:Calibri,sans-serif"><u></u> <u></u></div><div style="margin:0in 0in 0.0001pt;font-size:11pt;font-family:Calibri,sans-serif">Kirk H.</div><div style="margin:0in 0in 0.0001pt;font-size:11pt;font-family:Calibri,sans-serif"><u></u> <u></u></div><div style="margin:0in 0in 0.0001pt;font-size:11pt;font-family:Calibri,sans-serif">Sent from<span class="gmail-m_4130592727443630149Apple-converted-space"> </span><a href="https://go.microsoft.com/fwlink/?LinkId=550986" style="color:rgb(149,79,114);text-decoration:underline" target="_blank">Mail</a><span class="gmail-m_4130592727443630149Apple-converted-space"> </span>for Windows 10</div><div style="margin:0in 0in 0.0001pt;font-size:11pt;font-family:Calibri,sans-serif"><u></u> <u></u></div><div style="border-style:solid none none;border-top-width:1pt;border-top-color:rgb(225,225,225);padding:3pt 0in 0in"><div style="margin:0in 0in 0.0001pt;font-size:11pt;font-family:Calibri,sans-serif;border:none;padding:0in"><b>From:<span class="gmail-m_4130592727443630149Apple-converted-space"> </span></b><a href="mailto:crispinpigott@outlook.com" style="color:rgb(149,79,114);text-decoration:underline" target="_blank">Crispin Pemberton-Pigott</a><br><b>Sent:<span class="gmail-m_4130592727443630149Apple-converted-space"> </span></b>Thursday, April 25, 2019 1:27 PM<br><b>To:<span class="gmail-m_4130592727443630149Apple-converted-space"> </span></b><a href="mailto:rongretlarson@comcast.net" style="color:rgb(149,79,114);text-decoration:underline" target="_blank">Ronal Larson</a>;<span class="gmail-m_4130592727443630149Apple-converted-space"> </span><a href="mailto:stoves@lists.bioenergylists.org" style="color:rgb(149,79,114);text-decoration:underline" target="_blank">Discussion of biomass cooking stoves</a><br><b>Subject:<span class="gmail-m_4130592727443630149Apple-converted-space"> </span></b>Re: [Stoves] Simple Modifications to Traditional Wood Cookstoves -Rocks and Clay Grates</div></div><div style="margin:0in 0in 0.0001pt;font-size:11pt;font-family:Calibri,sans-serif"><u></u> <u></u></div><div style="margin:0in 0in 0.0001pt;font-size:11pt;font-family:Calibri,sans-serif"><span lang="EN-CA">Dear Ron<u></u><u></u></span></div><div style="margin:0in 0in 0.0001pt;font-size:11pt;font-family:Calibri,sans-serif"><span lang="EN-CA"><u></u> <u></u></span></div></div></div></blockquote><span class="gmail-m_4130592727443630149Apple-tab-span" style="white-space:pre-wrap"> </span><snip></div></div></div>_______________________________________________<br>
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