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</o:shapelayout></xml><![endif]--></head><body bgcolor=white lang=EN-CA link=blue vlink=purple><div class=WordSection1><p class=MsoNormal><span style='font-size:11.0pt;font-family:"Calibri","sans-serif";color:#1F497D;mso-fareast-language:EN-US'>Dear Kirk<o:p></o:p></span></p><p class=MsoNormal><span style='font-size:11.0pt;font-family:"Calibri","sans-serif";color:#1F497D;mso-fareast-language:EN-US'><o:p> </o:p></span></p><p class=MsoNormal><span style='font-size:11.0pt;font-family:"Calibri","sans-serif";color:#1F497D;mso-fareast-language:EN-US'>I have looked through the messages below and did not find what you are calling ‘methods 1-4’.<o:p></o:p></span></p><p class=MsoNormal><span style='font-size:11.0pt;font-family:"Calibri","sans-serif";color:#1F497D;mso-fareast-language:EN-US'><o:p> </o:p></span></p><p class=MsoNormal><span style='font-size:11.0pt;font-family:"Calibri","sans-serif";color:#1F497D;mso-fareast-language:EN-US'>Can you please copy to me whatever it was that is the source of the comments? I would like to understand what you are referring to with these different methods.<o:p></o:p></span></p><p class=MsoNormal><span style='font-size:11.0pt;font-family:"Calibri","sans-serif";color:#1F497D;mso-fareast-language:EN-US'><o:p> </o:p></span></p><p class=MsoNormal><span style='font-size:11.0pt;font-family:"Calibri","sans-serif";color:#1F497D;mso-fareast-language:EN-US'>The layout and function as you describe do not apply to the Vesto so I was wondering what you mean by a ‘pilot flame’. The Vesto dies have a pilot flame with air provided by three 8mm holes quite low in the chamber, well below the secondary air inlets. This is relevant when the bottom of the combustion chamber is blocked in order to run in a TLUD gasification mode. Normally that is blocked with a circle of newspaper with a few knife slits in it.<o:p></o:p></span></p><p class=MsoNormal><span style='font-size:11.0pt;font-family:"Calibri","sans-serif";color:#1F497D;mso-fareast-language:EN-US'><o:p> </o:p></span></p><p class=MsoNormal><span style='font-size:11.0pt;font-family:"Calibri","sans-serif";color:#1F497D;mso-fareast-language:EN-US'>The pilot flame ensures that wood can be charcoaled and burned controllably, or pellets (packed bed function) can be pyrolysed and then the char burned. This function enables the user to load quite a lot of fuel into the stove but burn it slowly – far slower than an ‘open fire’ would be able to. <o:p></o:p></span></p><p class=MsoNormal><span style='font-size:11.0pt;font-family:"Calibri","sans-serif";color:#1F497D;mso-fareast-language:EN-US'><o:p> </o:p></span></p><p class=MsoNormal><span style='font-size:11.0pt;font-family:"Calibri","sans-serif";color:#1F497D;mso-fareast-language:EN-US'>Thanks<br>Crispin<o:p></o:p></span></p><p class=MsoNormal><o:p> </o:p></p><div><p class=MsoNormal><span style='font-size:10.0pt;font-family:"Arial","sans-serif"'>Otto,</span><span style='font-family:"Calibri","sans-serif"'><o:p></o:p></span></p></div><div><p class=MsoNormal><span style='font-family:"Calibri","sans-serif"'> <o:p></o:p></span></p></div><div><p class=MsoNormal><span style='font-size:10.0pt;font-family:"Arial","sans-serif"'>Thank you for your lead on the Prime Stove, Dr. Nurhuda, and the Differ group.</span><span style='font-family:"Calibri","sans-serif"'><o:p></o:p></span></p></div><div><p class=MsoNormal><span style='font-family:"Calibri","sans-serif"'> <o:p></o:p></span></p></div><div><p class=MsoNormal><span style='font-size:10.0pt;font-family:"Arial","sans-serif"'>The Prime stove is an excellent stove and they are doing wonderful things in Indonesia. This is the type of activity that I would like my work to support.</span><span style='font-family:"Calibri","sans-serif"'><o:p></o:p></span></p></div><div><p class=MsoNormal><span style='font-family:"Calibri","sans-serif"'> <o:p></o:p></span></p></div><div><p class=MsoNormal><span style='font-size:10.0pt;font-family:"Arial","sans-serif"'>The Prime stove is however not a Method 2 stove. It more resembles a Vesto or Peco Pe. The early secondary air inlets are too low to provide an efficient pilot flame. They were clearly designed to direct air at the char and show no knowledge of the interaction of Method 2 type pilot flames with the secondary flame. If the lower holes were eliminated and replaced with holes directly below (2 to 2.5 cm) the secondary inlets, then it would be a Method 2 stove. Possibly the stove would then get a 3.1 turn down ratio instead of a 2.1 turn down ratio. Please examine my document again to see the difference.</span><span style='font-family:"Calibri","sans-serif"'><o:p></o:p></span></p></div><div><p class=MsoNormal><span style='font-family:"Calibri","sans-serif"'> <o:p></o:p></span></p></div><div><p class=MsoNormal><span style='font-size:10.0pt;font-family:"Arial","sans-serif"'>The Prime stove is also not a Method 1 or 4 stove. The secondary air is directed straight in, not down the inner wall of the reactor.</span><span style='font-family:"Calibri","sans-serif"'><o:p></o:p></span></p></div><div><p class=MsoNormal><span style='font-family:"Calibri","sans-serif"'> <o:p></o:p></span></p></div><div><p class=MsoNormal><span style='font-size:10.0pt;font-family:"Arial","sans-serif"'>Thank you for bringing up the topic of patents. I have designated the methods of turn down with numbers rather than names to avoid any implied thoughts or feelings of ownership on my part. This is partly in case a conflict comes up with a patent at some point. I have no desire or intent to violate any patents, and if such a conflict comes up I will stop any actions which might violate a patent or do any harm to any business, group, or individual. My intentions are to improve turn-down capability in TLUD cook stoves and all are welcome to use or not use anything I come up with.</span><span style='font-family:"Calibri","sans-serif"'><o:p></o:p></span></p></div><div><p class=MsoNormal><span style='font-family:"Calibri","sans-serif"'> <o:p></o:p></span></p></div><div><p class=MsoNormal><span style='font-size:10.0pt;font-family:"Arial","sans-serif"'>I can name my test stoves as I please and need not your permission or approval. Wonderwerk is a name not a nick name.</span><span style='font-family:"Calibri","sans-serif"'><o:p></o:p></span></p></div><div><p class=MsoNormal><span style='font-family:"Calibri","sans-serif"'> <o:p></o:p></span></p></div><div><p class=MsoNormal><span style='font-size:10.0pt;font-family:"Arial","sans-serif"'>Respectfully,</span><span style='font-family:"Calibri","sans-serif"'><o:p></o:p></span></p></div><div><p class=MsoNormal><span style='font-family:"Calibri","sans-serif"'> <o:p></o:p></span></p></div><div><p class=MsoNormal><span style='font-size:10.0pt;font-family:"Arial","sans-serif"'>Kirk Harris</span><span style='font-family:"Calibri","sans-serif"'><o:p></o:p></span></p></div><div><p class=MsoNormal><span style='font-size:10.0pt;font-family:"Arial","sans-serif"'>Santa Rosa, CA. USA</span><span style='font-family:"Calibri","sans-serif"'><o:p></o:p></span></p></div><div><p class=MsoNormal><span style='font-family:"Calibri","sans-serif"'> <o:p></o:p></span></p></div><div><p class=MsoNormal><span style='font-family:"Calibri","sans-serif"'> <o:p></o:p></span></p></div><blockquote style='border:none;border-left:solid black 1.5pt;padding:0mm 0mm 0mm 4.0pt;margin-left:3.75pt;margin-top:5.0pt;margin-right:0mm;margin-bottom:5.0pt'><div><p class=MsoNormal><span style='font-size:10.0pt;font-family:"Arial","sans-serif"'>----- Original Message ----- <o:p></o:p></span></p></div><div><p class=MsoNormal style='background:#E4E4E4'><b><span style='font-size:10.0pt;font-family:"Arial","sans-serif"'>From:</span></b><span style='font-size:10.0pt;font-family:"Arial","sans-serif"'> <a href="mailto:terra-matricula@hotmail.com" title="terra-matricula@hotmail.com">Otto Formo</a> <o:p></o:p></span></p></div><div><p class=MsoNormal><b><span style='font-size:10.0pt;font-family:"Arial","sans-serif"'>To:</span></b><span style='font-size:10.0pt;font-family:"Arial","sans-serif"'> <a href="mailto:stoves@lists.bioenergylists.org" title="stoves@lists.bioenergylists.org">Stoves Bioenergylist</a> <o:p></o:p></span></p></div><div><p class=MsoNormal><b><span style='font-size:10.0pt;font-family:"Arial","sans-serif"'>Sent:</span></b><span style='font-size:10.0pt;font-family:"Arial","sans-serif"'> Wednesday, May 21, 2014 2:01 AM<o:p></o:p></span></p></div><div><p class=MsoNormal><b><span style='font-size:10.0pt;font-family:"Arial","sans-serif"'>Subject:</span></b><span style='font-size:10.0pt;font-family:"Arial","sans-serif"'> Re: [Stoves] Natural draft TLUD turn-down<o:p></o:p></span></p></div><div><p class=MsoNormal><span style='font-family:"Calibri","sans-serif"'><o:p> </o:p></span></p></div><div><p class=MsoNormal><span style='font-family:"Calibri","sans-serif"'><o:p> </o:p></span></p><p class=MsoNormal><span lang=EN-US style='font-family:"Calibri","sans-serif"'>Kirk Harris, Paul A and Ron L,</span><span style='font-family:"Calibri","sans-serif"'><o:p></o:p></span></p><p class=MsoNormal><span style='font-family:"Calibri","sans-serif"'><o:p> </o:p></span></p><p class=MsoNormal><span lang=EN-US style='font-family:"Calibri","sans-serif"'>I am not assuming that the Peko Pe, will pass the ISO IWA low power test as a tier 4 stove, but I find it a bit odd that your method 2, is describing very much how the Peko Pe used to operate and now operates, including an adjustable primary air intake.</span><span style='font-family:"Calibri","sans-serif"'><o:p></o:p></span></p><p class=MsoNormal><span style='font-family:"Calibri","sans-serif"'><o:p> </o:p></span></p><p class=MsoNormal><span lang=EN-US style='font-family:"Calibri","sans-serif"'>Robert, saw the similarity for the lower secondary air inlet in the combustion chamber, just like the old type of Peko Pe from Uganda in the 1990`s and I noticed the adjustable inlet for primary air, like in the newest model.</span><span style='font-family:"Calibri","sans-serif"'><o:p></o:p></span></p><p class=MsoNormal style='margin-bottom:12.0pt'><span style='font-family:"Calibri","sans-serif"'><br></span><span lang=EN-US style='font-family:"Calibri","sans-serif"'>In a micro gasifier unit, like the Peko Pe, you can also easily “adjust” the amount of fuel to be used for each cooking.</span><span style='font-family:"Calibri","sans-serif"'><o:p></o:p></span></p><p class=MsoNormal><span lang=EN-US style='font-family:"Calibri","sans-serif"'>Just add fuel to a bit above the bottom plate and your flame will reach the pot, any how, due to the secondary inlet and the gasification process. </span><span style='font-family:"Calibri","sans-serif"'><o:p></o:p></span></p><p class=MsoNormal><span style='font-family:"Calibri","sans-serif"'><o:p> </o:p></span></p><p class=MsoNormal><span lang=EN-US style='font-family:"Calibri","sans-serif"'> A “Rocket” stove will produce more or less the same thermal efficiency, but with a higher PM.</span><span style='font-family:"Calibri","sans-serif"'><o:p></o:p></span></p><p class=MsoNormal style='margin-bottom:12.0pt'><span lang=EN-US style='font-family:"Calibri","sans-serif"'>These types of stoves are of course more efficient than a three stone fire, but the PM is very much the same as any open fire, apart from emissions from a micro gasifier unit.</span><span style='font-family:"Calibri","sans-serif"'><o:p></o:p></span></p><p class=MsoNormal><span lang=EN-US style='font-family:"Calibri","sans-serif"'>It would help, if a Rocket” stove was lit from the top, but still the strong draft in that narrow chimney, will create toxic emissions and PM to flow into the (air) room. </span><span style='font-family:"Calibri","sans-serif"'><o:p></o:p></span></p><p class=MsoNormal><span style='font-family:"Calibri","sans-serif"'><o:p> </o:p></span></p><p class=MsoNormal><span lang=EN-US style='font-family:"Calibri","sans-serif"'>I think you should also look into the Prime cookstoves, invented and patented by Dr. M. Nurhuda, Professor of Physics, Brawijaya University, Malang, Indonesia, when it comes to lower and power down the flame.</span><span style='font-family:"Calibri","sans-serif"'><o:p></o:p></span></p><p class=MsoNormal><span style='font-family:"Calibri","sans-serif"'><o:p> </o:p></span></p><p class=MsoNormal><span lang=EN-US style='font-family:"Calibri","sans-serif"'>I guess he would not be “too happy” to find out that you are calling his PrimeStove – Wonderwerk…………?</span><span style='font-family:"Calibri","sans-serif"'><o:p></o:p></span></p><p class=MsoNormal><span style='font-family:"Calibri","sans-serif"'><o:p> </o:p></span></p><p class=MsoNormal><span lang=EN-US style='font-family:"Calibri","sans-serif"'>“Your method” 3, by lifting the char in the combustion chamber, has been declined some time back, considered to be too complicated. </span><span style='font-family:"Calibri","sans-serif"'><o:p></o:p></span></p><p class=MsoNormal><span style='font-family:"Calibri","sans-serif"'><o:p> </o:p></span></p><p class=MsoNormal><span lang=EN-US style='font-family:"Calibri","sans-serif"'>We just put the remaining char into a standard charcoal stove, which you will find all over the African continent, for further simmering. </span><span style='font-family:"Calibri","sans-serif"'><o:p></o:p></span></p><p class=MsoNormal><span style='font-family:"Calibri","sans-serif"'><o:p> </o:p></span></p><p class=MsoNormal><span lang=EN-US style='font-family:"Calibri","sans-serif"'>Good luck with your efforts and tests.</span><span style='font-family:"Calibri","sans-serif"'><o:p></o:p></span></p><p class=MsoNormal><span lang=EN-US style='font-family:"Calibri","sans-serif"'>It is very much needed, but correct and proper references, should be mentioned and not “nick named”, that`s all.</span><span style='font-family:"Calibri","sans-serif"'><o:p></o:p></span></p><p class=MsoNormal><span style='font-family:"Calibri","sans-serif"'><o:p> </o:p></span></p><p class=MsoNormal><span lang=EN-US style='font-family:"Calibri","sans-serif"'>Otto </span><span style='font-family:"Calibri","sans-serif"'><o:p></o:p></span></p><p class=MsoNormal><span style='font-family:"Calibri","sans-serif"'><br> <o:p></o:p></span></p><div><div class=MsoNormal align=center style='text-align:center'><span style='font-family:"Calibri","sans-serif"'><hr size=2 width="100%" align=center id=stopSpelling></span></div><p class=MsoNormal style='margin-bottom:12.0pt'><span style='font-family:"Calibri","sans-serif"'>From: <a href="mailto:kgharris@sonic.net">kgharris@sonic.net</a><br>To: <a href="mailto:stoves@lists.bioenergylists.org">stoves@lists.bioenergylists.org</a><br>Date: Tue, 20 May 2014 11:38:15 -0700<br>Subject: Re: [Stoves] Natural draft TLUD turn-down<o:p></o:p></span></p><div><p class=MsoNormal><span style='font-size:10.0pt;font-family:"Arial","sans-serif"'>Otto and all,<o:p></o:p></span></p><p class=MsoNormal><span style='font-size:10.0pt;font-family:"Arial","sans-serif"'> <o:p></o:p></span></p><p class=MsoNormal><span style='font-size:10.0pt;font-family:"Arial","sans-serif"'>The Peko Pe is an incredible stove and the man who created it is even more incredible. I wish I had met Paal Wendelbo, but I missed out on that privilege. I have met lots of other really incredible people though.<o:p></o:p></span></p><p class=MsoNormal><span style='font-size:10.0pt;font-family:"Arial","sans-serif"'> <o:p></o:p></span></p><p class=MsoNormal><span style='font-size:10.0pt;font-family:"Arial","sans-serif"'>If the Peko Pe can pass the ISO IWA low power tests as a tier 4 stove then I will agree with you. If not then I will continue my struggles with the Wonderwerk test stoves in that direction. When I go to Stove Camp at Aprovecho this summer, I want to see a TLUD with low power tier 4 capabilities, be it a Wonderwerk stove or someone else’s stove. Come on TLUD folks, we're getting our butts kicked by the rocket people here.<o:p></o:p></span></p><p class=MsoNormal><span style='font-size:10.0pt;font-family:"Arial","sans-serif"'> <o:p></o:p></span></p><p class=MsoNormal><span style='font-size:10.0pt;font-family:"Arial","sans-serif"'>Kirk Harris<o:p></o:p></span></p><p class=MsoNormal><span style='font-size:10.0pt;font-family:"Arial","sans-serif"'>Santa Rosa, CA. USA<o:p></o:p></span></p></div><blockquote style='border:none;border-left:solid black 1.5pt;padding:0mm 0mm 0mm 4.0pt;margin-left:3.75pt;margin-top:5.0pt;margin-right:0mm;margin-bottom:5.0pt'><div><p class=MsoNormal><span style='font-size:10.0pt;font-family:"Arial","sans-serif"'>----- Original Message ----- <o:p></o:p></span></p></div><div><p class=MsoNormal style='background:#E4E4E4'><b><span style='font-size:10.0pt;font-family:"Arial","sans-serif"'>From:</span></b><span style='font-size:10.0pt;font-family:"Arial","sans-serif"'> <a href="mailto:terra-matricula@hotmail.com" title="terra-matricula@hotmail.com">Otto Formo</a> <o:p></o:p></span></p></div><div><p class=MsoNormal><b><span style='font-size:10.0pt;font-family:"Arial","sans-serif"'>To:</span></b><span style='font-size:10.0pt;font-family:"Arial","sans-serif"'> <a href="mailto:stoves@lists.bioenergylists.org" title="stoves@lists.bioenergylists.org">Stoves Bioenergylist</a> <o:p></o:p></span></p></div><div><p class=MsoNormal><b><span style='font-size:10.0pt;font-family:"Arial","sans-serif"'>Sent:</span></b><span style='font-size:10.0pt;font-family:"Arial","sans-serif"'> Monday, May 19, 2014 11:56 PM<o:p></o:p></span></p></div><div><p class=MsoNormal><b><span style='font-size:10.0pt;font-family:"Arial","sans-serif"'>Subject:</span></b><span style='font-size:10.0pt;font-family:"Arial","sans-serif"'> Re: [Stoves] Natural draft TLUD turn-down<o:p></o:p></span></p></div><div><p class=MsoNormal><span style='font-family:"Calibri","sans-serif"'><o:p> </o:p></span></p></div><div><p class=MsoNormal><span style='font-family:"Calibri","sans-serif"'>Dear Roberto,<br> <br>I very much agree with you.<br> <br>The Kirk Harris "stove", looks very much familiar and alike the way the Peko Pe has solved this issues and to me it is a REAL wonderwerk, so why call it with a nick name: <br>Wonderwerk TLUD ??<br> <br>This issues can be and are partly solved by the Peko Pe consept - "Problem no", Acoli tribe, Northern Uganda 1994 -95.<br> <br>Otto<br> <o:p></o:p></span></p><div><div class=MsoNormal align=center style='text-align:center'><span style='font-family:"Calibri","sans-serif"'><hr size=2 width="100%" align=center id=ecxstopSpelling></span></div><p class=MsoNormal style='margin-bottom:12.0pt'><span style='font-family:"Calibri","sans-serif"'>Date: Tue, 20 May 2014 08:38:41 +0900<br>From: <a href="mailto:crispinpigott@outlook.com">crispinpigott@outlook.com</a><br>To: <a href="mailto:stoves@lists.bioenergylists.org">stoves@lists.bioenergylists.org</a><br>Subject: Re: [Stoves] Natural draft TLUD turn-down<o:p></o:p></span></p><div><p class=MsoNormal style='background:white'><span style='font-family:"Calibri","sans-serif";color:#1F497D'>Dear Roberto<o:p></o:p></span></p></div><div><p class=MsoNormal style='background:white'><span style='font-family:"Calibri","sans-serif";color:#1F497D'><o:p> </o:p></span></p></div><div><p class=MsoNormal style='background:white'><span style='font-family:"Calibri","sans-serif";color:#1F497D'>I agree with your analysis. There is a lot of merit in keeping the secondary flame in close proximity to the top of the fuel bed. The most important is that the secondary flame is harder to put out with a slight breeze (because it relights). The second is that when the primary air is turned down to control the power, the secondary flame is able to remain hot enough to stay alight. Combined with external, down-drafting secondary air preheating (not like the Peko Pe) one can maintain the secondary air feed ration under different primary air conditions. <o:p></o:p></span></p></div><div><p class=MsoNormal style='background:white'><span style='font-family:"Calibri","sans-serif";color:#1F497D'><o:p> </o:p></span></p></div><div><p class=MsoNormal style='background:white'><span style='font-family:"Calibri","sans-serif";color:#1F497D'>Read and heed! TLUD's are not succeeding in meeting the turndown ratios required by ordinary cooking. To burn clean at different burn rates, whatever the fuel, you have to control both the primary and secondary air flows. <o:p></o:p></span></p></div><div><p class=MsoNormal style='background:white'><span style='font-family:"Calibri","sans-serif";color:#1F497D'><o:p> </o:p></span></p></div><div><p class=MsoNormal style='background:white'><span style='font-family:"Calibri","sans-serif";color:#1F497D'>While a 'double controller' can work, turning the secondary air down at exactly the same time as the primary leads to a 2-3 minute period of very high PM and or CO and VOC's because of the retained heat in the fuel bed and stove body. This is worse if the combustion chamber is ceramic or cast iron. <o:p></o:p></span></p></div><div><p class=MsoNormal style='background:white'><span style='font-family:"Calibri","sans-serif";color:#1F497D'><o:p> </o:p></span></p></div><div><p class=MsoNormal style='background:white'><span style='font-family:"Calibri","sans-serif";color:#1F497D'>If the secondary air feed it an automatic, buoyancy-driven ýsupply, it will draw in additional air as required during the cooling-off period. This explains the strange layout of the air supply in a Vesto Stove which tried to address the problems inherent in David Hancock's (very advanced at the time) 1984 Tsotso Stove (which is still in production). <o:p></o:p></span></p></div><div><p class=MsoNormal style='background:white'><span style='font-family:"Calibri","sans-serif";color:#1F497D'><o:p> </o:p></span></p></div><div><p class=MsoNormal style='background:white'><span style='font-family:"Calibri","sans-serif";color:#1F497D'>Regards <o:p></o:p></span></p></div><div><p class=MsoNormal style='background:white'><span style='font-family:"Calibri","sans-serif";color:#1F497D'>Crispin in Seoul enjoying spring <o:p></o:p></span></p></div><div><p class=MsoNormal style='background:white'><span style='font-family:"Calibri","sans-serif";color:#1F497D'><o:p> </o:p></span></p></div><div><p class=MsoNormal style='background:white'><span style='font-family:"Calibri","sans-serif";color:#1F497D'>BBM 2B567C3<o:p></o:p></span></p></div><table class=MsoNormalTable border=0 cellpadding=0 width="100%" style='width:100.0%;background:white;BORDER-SPACING: 0px'><tr><td style='padding:.75pt .75pt .75pt .75pt'><div style='border:none;border-top:solid #B5C4DF 1.0pt;padding:3.0pt 0mm 0mm 0mm' id="ecx_persistentHeader"><div><p class=MsoNormal><b><span style='font-size:10.0pt;font-family:"Tahoma","sans-serif"'>From: </span></b><span style='font-size:10.0pt;font-family:"Tahoma","sans-serif"'>Roberto Poehlmann<o:p></o:p></span></p></div><div><p class=MsoNormal><b><span style='font-size:10.0pt;font-family:"Tahoma","sans-serif"'>Sent: </span></b><span style='font-size:10.0pt;font-family:"Tahoma","sans-serif"'>Tuesday, May 20, 2014 02:28<o:p></o:p></span></p></div><div><p class=MsoNormal><b><span style='font-size:10.0pt;font-family:"Tahoma","sans-serif"'>To: </span></b><span style='font-size:10.0pt;font-family:"Tahoma","sans-serif"'><a href="mailto:stoves@lists.bioenergylists.org">stoves@lists.bioenergylists.org</a><o:p></o:p></span></p></div><div><p class=MsoNormal><b><span style='font-size:10.0pt;font-family:"Tahoma","sans-serif"'>Reply To: </span></b><span style='font-size:10.0pt;font-family:"Tahoma","sans-serif"'>Discussion of biomass cooking stoves<o:p></o:p></span></p></div><div><p class=MsoNormal><b><span style='font-size:10.0pt;font-family:"Tahoma","sans-serif"'>Subject: </span></b><span style='font-size:10.0pt;font-family:"Tahoma","sans-serif"'>Re: [Stoves] Natural draft TLUD turn-down<o:p></o:p></span></p></div></div></td></tr></table><p class=MsoNormal><span style='font-family:"Calibri","sans-serif"'><o:p> </o:p></span></p><div><div><div><p class=MsoNormal><span style='font-family:"Calibri","sans-serif"'>Kirk,<o:p></o:p></span></p></div><div><p class=MsoNormal><span style='font-family:"Calibri","sans-serif"'>this is a very interesting document, thanks to share it.<o:p></o:p></span></p></div><div><p class=MsoNormal><span style='font-family:"Calibri","sans-serif"'><o:p> </o:p></span></p></div><div><p class=MsoNormal><span style='font-family:"Calibri","sans-serif"'>The method 2 is like the 12 holes configuration of the Peko Pe design in page 9 of the following document:<o:p></o:p></span></p></div><div><p class=MsoNormal><span style='font-family:"Calibri","sans-serif"'><o:p> </o:p></span></p></div><div><p class=MsoNormal><span style='font-family:"Calibri","sans-serif"'><a href="http://www.adansonia-consulting.ch/document/Grass%20Cooker%20handbook_print.pdf?PHPSESSID=3d064accc3efbdafd3b1133a13129f9a" target="_blank">http://www.adansonia-consulting.ch/document/Grass%20Cooker%20handbook_print.pdf?PHPSESSID=3d064accc3efbdafd3b1133a13129f9a</a><o:p></o:p></span></p></div><div><p class=MsoNormal><span style='font-family:"Calibri","sans-serif"'><o:p> </o:p></span></p></div><div><p class=MsoNormal><span style='font-family:"Calibri","sans-serif"'>Maybe this is the reason that the Peko Pe stove don't need an internal chimney to operate. This 12 holes function also like 12 pilot flames, maintaining the secondary flame hot.<o:p></o:p></span></p></div><div><p class=MsoNormal><span style='font-family:"Calibri","sans-serif"'><o:p> </o:p></span></p></div><div><p class=MsoNormal><span style='font-family:"Calibri","sans-serif"'>I have replicated this design of the Peko Pe, and in operation, you can see the pilot flames attached to the 12 holes.<o:p></o:p></span></p></div><div><p class=MsoNormal><span style='font-family:"Calibri","sans-serif"'><o:p> </o:p></span></p></div><div><p class=MsoNormal><span style='font-family:"Calibri","sans-serif"'>Maybe the 4 holes concept in the middle of the combustion chamber can also helps to maintain a slow power consumption. When the pyrolysis front reach the middle of the combustion chamber, this "primary air" start to combust the charcoal, adding heat to also support the flame.<o:p></o:p></span></p></div><div><p class=MsoNormal><span style='font-family:"Calibri","sans-serif"'><o:p> </o:p></span></p></div><div><p class=MsoNormal><span style='font-family:"Calibri","sans-serif"'>Roberto Poehlmann<o:p></o:p></span></p></div><div><p class=MsoNormal><span style='font-family:"Calibri","sans-serif"'>Valdivia Chile.<o:p></o:p></span></p></div><div><p class=MsoNormal><span style='font-family:"Calibri","sans-serif"'><o:p> </o:p></span></p></div><div><p class=MsoNormal><span style='font-family:"Calibri","sans-serif"'><o:p> </o:p></span></p></div><div><p class=MsoNormal><span style='font-family:"Calibri","sans-serif"'>"<o:p></o:p></span></p></div><p class=MsoNormal><span style='font-size:10.0pt;font-family:"Arial","sans-serif"'>All,<br><br>Dr. Ron Larson, Dr. Paul Anderson and I have been working on the problem of lack of turn-down in natural draft TLUD cook stoves. We have found considerable success. Attached is a document introducing the results of our labors. All information is in the public domain.<br><br>K Harris<br>Santa Rosa, CA. USA<br><br>-------------- next part --------------<br>A non-text attachment was scrubbed...<br>Name: Harris TLUD turn-down 05 15 14 (1).pdf<br>Type: application/pdf<br>Size: 332120 bytes<br>Desc: not available<br>URL: <</span><span style='font-family:"Calibri","sans-serif"'><a href="http://lists.bioenergylists.org/pipermail/stoves_lists.bioenergylists.org/attachments/20140515/adc42da5/attachment-0001.pdf" target="_blank"><span style='font-size:10.0pt;font-family:"Arial","sans-serif"'>http://lists.bioenergylists.org/pipermail/stoves_lists.bioenergylists.org/attachments/20140515/adc42da5/attachment-0001.pdf</span></a></span><span style='font-size:10.0pt;font-family:"Arial","sans-serif"'>></span><span style='font-family:"Calibri","sans-serif"'> <o:p></o:p></span></p><div><p class=MsoNormal><span style='font-family:"Calibri","sans-serif"'><o:p> </o:p></span></p></div></div></div><p class=MsoNormal><span style='font-family:"Calibri","sans-serif"'><br>_______________________________________________ Stoves mailing list to Send a Message to the list, use the email address <a href="mailto:stoves@lists.bioenergylists.org">stoves@lists.bioenergylists.org</a> to UNSUBSCRIBE or Change your List Settings use the web page <a href="http://lists.bioenergylists.org/mailman/listinfo/stoves_lists.bioenergylists.org">http://lists.bioenergylists.org/mailman/listinfo/stoves_lists.bioenergylists.org</a> for more Biomass Cooking Stoves, News and Information see our web site: <a href="http://stoves.bioenergylists.org/">http://stoves.bioenergylists.org/</a><br>_______________________________________________ Stoves mailing list to Send a Message to the list, use the email address <a href="mailto:stoves@lists.bioenergylists.org">stoves@lists.bioenergylists.org</a> to UNSUBSCRIBE or Change your List Settings use the web page <a href="http://lists.bioenergylists.org/mailman/listinfo/stoves_lists.bioenergylists.org">http://lists.bioenergylists.org/mailman/listinfo/stoves_lists.bioenergylists.org</a> for more Biomass Cooking Stoves, News and Information see our web site: <a href="http://stoves.bioenergylists.org/">http://stoves.bioenergylists.org/</a><o:p></o:p></span></p></div></div><div class=MsoNormal align=center style='text-align:center'><span style='font-family:"Calibri","sans-serif"'><hr size=2 width="100%" align=center></span></div><p class=MsoNormal style='margin-bottom:12.0pt'><span style='font-family:"Calibri","sans-serif"'><br>_______________________________________________<br>Stoves mailing list<br><br>to Send a Message to the list, use the email address<br><a href="mailto:stoves@lists.bioenergylists.org">stoves@lists.bioenergylists.org</a><br><br>to UNSUBSCRIBE or Change your List Settings use the web page<br><a href="http://lists.bioenergylists.org/mailman/listinfo/stoves_lists.bioenergylists.org">http://lists.bioenergylists.org/mailman/listinfo/stoves_lists.bioenergylists.org</a><br><br>for more Biomass Cooking Stoves, News and Information see our web site:<br><a href="http://stoves.bioenergylists.org/">http://stoves.bioenergylists.org/</a><o:p></o:p></span></p></blockquote><p class=MsoNormal><span style='font-family:"Calibri","sans-serif"'><br>_______________________________________________ Stoves mailing list to Send a Message to the list, use the email address <a href="mailto:stoves@lists.bioenergylists.org">stoves@lists.bioenergylists.org</a> to UNSUBSCRIBE or Change your List Settings use the web page <a href="http://lists.bioenergylists.org/mailman/listinfo/stoves_lists.bioenergylists.org">http://lists.bioenergylists.org/mailman/listinfo/stoves_lists.bioenergylists.org</a> for more Biomass Cooking Stoves, News and Information see our web site: <a href="http://stoves.bioenergylists.org/">http://stoves.bioenergylists.org/</a><o:p></o:p></span></p></div></div><div class=MsoNormal align=center style='text-align:center'><span style='font-family:"Calibri","sans-serif"'><hr size=2 width="100%" align=center></span></div><p class=MsoNormal style='margin-bottom:12.0pt'><span style='font-family:"Calibri","sans-serif"'>_______________________________________________<br>Stoves mailing list<br><br>to Send a Message to the list, use the email address<br><a href="mailto:stoves@lists.bioenergylists.org">stoves@lists.bioenergylists.org</a><br><br>to UNSUBSCRIBE or Change your List Settings use the web page<br><a href="http://lists.bioenergylists.org/mailman/listinfo/stoves_lists.bioenergylists.org">http://lists.bioenergylists.org/mailman/listinfo/stoves_lists.bioenergylists.org</a><br><br>for more Biomass Cooking Stoves, News and Information see our web site:<br><a href="http://stoves.bioenergylists.org/">http://stoves.bioenergylists.org/</a><o:p></o:p></span></p></blockquote></div></body></html>