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</o:shapelayout></xml><![endif]--></head><body lang=EN-US link=blue vlink=purple><div class=WordSection1><p class=MsoNormal><span style='font-size:11.0pt;font-family:"Calibri","sans-serif";color:#1F497D'>Paul,<o:p></o:p></span></p><p class=MsoNormal><span style='font-size:11.0pt;font-family:"Calibri","sans-serif";color:#1F497D'><o:p> </o:p></span></p><p class=MsoNormal><span style='font-size:11.0pt;font-family:"Calibri","sans-serif";color:#1F497D'>You are jumping to conclusions about health risk based on your own assumptions and no data. You have raised a well-known issue. Now put your candidate stoves under a hood at a recognized lab and let health professionals analyze the risk. <o:p></o:p></span></p><p class=MsoNormal><span style='font-size:11.0pt;font-family:"Calibri","sans-serif";color:#1F497D'><o:p> </o:p></span></p><p class=MsoNormal><span style='font-size:11.0pt;font-family:"Calibri","sans-serif";color:#1F497D'>This recalls a point that we hear from health professionals that the is too little solid field research on health impacts of household energy. Is a stove burning rice husk any better or worse than one burning wet dung or wood? Where’s the data?<o:p></o:p></span></p><p class=MsoNormal><span style='font-size:11.0pt;font-family:"Calibri","sans-serif";color:#1F497D'><o:p> </o:p></span></p><p class=MsoNormal><span style='font-size:11.0pt;font-family:"Calibri","sans-serif";color:#1F497D'>Tom <a name="_MailEndCompose"><o:p></o:p></a></span></p><p class=MsoNormal><span style='font-size:11.0pt;font-family:"Calibri","sans-serif";color:#1F497D'><o:p> </o:p></span></p><p class=MsoNormal><span style='font-size:11.0pt;font-family:"Calibri","sans-serif";color:#1F497D'><o:p> </o:p></span></p><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"'> Stoves [mailto:stoves-bounces@lists.bioenergylists.org] <b>On Behalf Of </b>Paul Olivier<br><b>Sent:</b> Saturday, June 15, 2013 3:52 AM<br><b>To:</b> Discussion of biomass cooking stoves; Josh Kearns<br><b>Subject:</b> Re: [Stoves] Chimneys, rice husks [Ovens]<o:p></o:p></span></p><p class=MsoNormal><o:p> </o:p></p><div><div><div><div><p class=MsoNormal style='margin-bottom:12.0pt'>Stephen,<o:p></o:p></p></div><p class=MsoNormal>What I am trying to do now is to highlight the danger of directly combusting rice hulls.<o:p></o:p></p></div><div><p class=MsoNormal>If the rate of gasification remains low (at 100 kg/M2), I do not suspect that cristobalite will be formed in a TLUD.<o:p></o:p></p></div><div><p class=MsoNormal>I sent some rice hull biochar from my gasifiers to Josh Kearns.<o:p></o:p></p></div><div><p class=MsoNormal>I hope that he tests it for the presence of cristobalite.<o:p></o:p></p></div><div><p class=MsoNormal><o:p> </o:p></p></div><p class=MsoNormal>Thanks.<o:p></o:p></p></div><p class=MsoNormal>Paul<o:p></o:p></p><div><div><p class=MsoNormal><o:p> </o:p></p><div><p class=MsoNormal style='margin-bottom:12.0pt'><o:p> </o:p></p><div><p class=MsoNormal>On Sat, Jun 15, 2013 at 5:29 PM, Stephen Joseph <<a href="mailto:joey.stephen@gmail.com" target="_blank">joey.stephen@gmail.com</a>> wrote:<o:p></o:p></p><div><p class=MsoNormal>Hi Paul<o:p></o:p></p></div><div><p class=MsoNormal><o:p> </o:p></p></div><p class=MsoNormal>No we are pyrolysing them in the outer chamber so they are not subjected to direct combustion.<o:p></o:p></p><div><p class=MsoNormal><o:p> </o:p></p></div><div><p class=MsoNormal>Mr Khoi's stove is not a TLUD. I would not recommend people use TLUD stoves for rice husks unless they cover the husks with wet clay and then dry the clay. This coating has the advantage of keeping the temperature down and also activating the surface<o:p></o:p></p></div><div><p class=MsoNormal><o:p> </o:p></p></div><div><p class=MsoNormal>In any of my TLUD work I try to get people to coat their biomass in an iron rick clay to improve both CEC and yields.<o:p></o:p></p></div><div><p class=MsoNormal><o:p> </o:p></p></div><div><p class=MsoNormal>Regards<o:p></o:p></p></div><div><p class=MsoNormal><span class=hoenzb><span style='color:#888888'>Stephen</span></span><o:p></o:p></p><div><div><p class=MsoNormal style='margin-bottom:12.0pt'><o:p> </o:p></p><div><p class=MsoNormal>On Sat, Jun 15, 2013 at 7:40 PM, Paul Olivier <<a href="mailto:paul.olivier@esrla.com" target="_blank">paul.olivier@esrla.com</a>> wrote:<o:p></o:p></p><div><div><div><p class=MsoNormal style='margin-bottom:12.0pt'>Stephen,<o:p></o:p></p></div><p class=MsoNormal style='margin-bottom:12.0pt'>Are you burning rice hulls at a temperature less than 450 C?<o:p></o:p></p></div><p class=MsoNormal><span style='color:#888888'>Paul</span><o:p></o:p></p></div><div><div><div><p class=MsoNormal style='margin-bottom:12.0pt'><o:p> </o:p></p><div><p class=MsoNormal>On Sat, Jun 15, 2013 at 4:10 PM, Stephen Joseph <<a href="mailto:joey.stephen@gmail.com" target="_blank">joey.stephen@gmail.com</a>> wrote:<o:p></o:p></p><p class=MsoNormal>I paul<o:p></o:p></p><div><p class=MsoNormal><o:p> </o:p></p></div><div><p class=MsoNormal>Not if you use the design with an inner fire box and an outer pyrolysis chamber as is Mr Khois design. In fact it is the main reason why I recommended this design configuration and sizing to PED.<o:p></o:p></p></div><div><p class=MsoNormal><o:p> </o:p></p></div><div><p class=MsoNormal>We did a large research project with the Australia Government research arm ACIAR to optimise the design.<o:p></o:p></p></div><div><p class=MsoNormal><o:p> </o:p></p></div><div><p class=MsoNormal style='margin-bottom:12.0pt'>I have measurde the rice husk temperature in this outer chamber and it stays pretty uniform at around 450C after the initial drying and torrefaction phases.<o:p></o:p></p></div><div><p class=MsoNormal><o:p> </o:p></p></div><div><p class=MsoNormal>Regards<o:p></o:p></p></div><div><p class=MsoNormal><span style='color:#888888'>Stephen</span><o:p></o:p></p><div><div><p class=MsoNormal><o:p> </o:p></p><div><p class=MsoNormal>On Sat, Jun 15, 2013 at 5:55 PM, Paul Olivier <<a href="mailto:paul.olivier@esrla.com" target="_blank">paul.olivier@esrla.com</a>> wrote:<o:p></o:p></p><div><div><div><p class=MsoNormal>But, Stephen, temperatures can rise above 900 C when burning rice hulls.<o:p></o:p></p></div><p class=MsoNormal>If we operate at low temperatures (450 C) in burning rice hulls, are we not inevitably making a lot of smoke?<o:p></o:p></p></div><div><p class=MsoNormal>Even at relatively low average combustion temperatures, will there not be a tendency for hot zones to form within the combustor?<o:p></o:p></p></div><div><p class=MsoNormal><span style='color:#888888'><o:p> </o:p></span></p></div><p class=MsoNormal><span style='color:#888888'>Paul Olivier</span><o:p></o:p></p></div><div><div><div><p class=MsoNormal style='margin-bottom:12.0pt'><o:p> </o:p></p><div><p class=MsoNormal>On Sat, Jun 15, 2013 at 2:44 PM, Stephen Joseph <<a href="mailto:joey.stephen@gmail.com" target="_blank">joey.stephen@gmail.com</a>> wrote:<o:p></o:p></p><p class=MsoNormal>All<o:p></o:p></p><div><p class=MsoNormal><o:p> </o:p></p></div><div><p class=MsoNormal>There has been a lot of work done on formation of crystobalite. The rate of formation is both a function of time and temerature<o:p></o:p></p></div><div><p class=MsoNormal><o:p> </o:p></p></div><div><p class=MsoNormal>If you have low temperatures (450c) and short times (<60 minutes)you wont produce it.<o:p></o:p></p></div><div><p class=MsoNormal><o:p> </o:p></p></div><div><p class=MsoNormal>Mehta in India did a lot of work on this in the 80's and published a book on rice husk ash cement if I remember correctly<o:p></o:p></p></div><div><p class=MsoNormal><o:p> </o:p></p></div><div><p class=MsoNormal>Regards<o:p></o:p></p></div><div><p class=MsoNormal><span style='color:#888888'>Stephen</span><o:p></o:p></p><div><div><p class=MsoNormal style='margin-bottom:12.0pt'><o:p> </o:p></p><div><p class=MsoNormal>On Sat, Jun 15, 2013 at 5:20 PM, Paul Olivier <<a href="mailto:paul.olivier@esrla.com" target="_blank">paul.olivier@esrla.com</a>> wrote:<o:p></o:p></p><div><div><div><div><p class=MsoNormal style='margin-bottom:12.0pt'>Tom,<o:p></o:p></p></div><p class=MsoNormal>I found this news report:<br><a href="http://www.ipsnews.net/2009/10/thailand-renewable-energy-not-so-clean-and-green-after-all/" target="_blank">http://www.ipsnews.net/2009/10/thailand-renewable-energy-not-so-clean-and-green-after-all/</a><o:p></o:p></p></div><div><p class=MsoNormal>Not such a nice story.<o:p></o:p></p></div><p class=MsoNormal style='margin-bottom:12.0pt'>I do not think it's a good idea to burn rice hulls or rice straw in either power plants, brick kilns or household stoves.<o:p></o:p></p></div><p class=MsoNormal>Paul<o:p></o:p></p></div><div><p class=MsoNormal style='margin-bottom:12.0pt'><o:p> </o:p></p><div><p class=MsoNormal>On Sat, Jun 15, 2013 at 1:10 PM, Paul Olivier <<a href="mailto:paul.olivier@esrla.com" target="_blank">paul.olivier@esrla.com</a>> wrote:<o:p></o:p></p><div><div><div><p class=MsoNormal style='margin-bottom:12.0pt'>Tom,<br><br>I have read in many articles that cristobalite can form at temperatures of about 900 C.<br><a href="http://www.jicosh.gr.jp/old/niih/en/indu_hel/2004/pdf/42-2-24.pdf" target="_blank">http://www.jicosh.gr.jp/old/niih/en/indu_hel/2004/pdf/42-2-24.pdf</a><br>In burning rice hulls, temperatures can easily exceed 900 C.<br>If cristobalite forms and is breathed in, human health is severely impacted: silicosis, tuberculosis, cancer and so forth.<br><br><i>Silica (SiO2) is a constituent of the ash produced by the combustion process. Different<br>types of biomass fuels contain different quantities of silica. The International Agency for<br>Research on Cancer has classified silica as a human carcinogen. Long term inhalation<br>of airborne silica particulates can cause lung cancer or other related health problems.<br>As rice hull ash contains high levels of silica (~15%), its use as a biomass fuel<br>presumably increases the risk of developing silicosis-related illnesses, and care should<br>be used in handling the ash.</i><br><a href="http://www.reap-canada.com/online_library/IntDev/id_eco_sugarcane/7%20Strategies%20for.pdf" target="_blank">http://www.reap-canada.com/online_library/IntDev/id_eco_sugarcane/7%20Strategies%20for.pdf</a><br><br><i>Silica (SiO2) is the main mineral component of rice husk ash (RHA) (85-90 per cent). It carries serious health risks, particularly to the<br>respiratory system.</i> <br><a href="http://www.dhf.uu.se/pdffiler/cc7/cc7_web_art4.pdf" target="_blank">http://www.dhf.uu.se/pdffiler/cc7/cc7_web_art4.pdf</a><o:p></o:p></p></div><p class=MsoNormal style='margin-bottom:12.0pt'>Cristobalite can be present in both the ash and fly ash. If someone designs a stove to burn rice hulls or rice straw, he has to be sure that temperatures remain below the point of cristobalite formation. <o:p></o:p></p></div><p class=MsoNormal><span style='color:#888888'>Paul</span><o:p></o:p></p></div><div><div><div><p class=MsoNormal style='margin-bottom:12.0pt'><o:p> </o:p></p><div><p class=MsoNormal>On Sat, Jun 15, 2013 at 11:18 AM, Tom Miles <<a href="mailto:tmiles@trmiles.com" target="_blank">tmiles@trmiles.com</a>> wrote:<o:p></o:p></p><div><div><p class=MsoNormal style='mso-margin-top-alt:auto;mso-margin-bottom-alt:auto'><span style='font-size:11.0pt;font-family:"Calibri","sans-serif";color:#1F497D'>Paul,</span><o:p></o:p></p><p class=MsoNormal style='mso-margin-top-alt:auto;mso-margin-bottom-alt:auto'><span style='font-size:11.0pt;font-family:"Calibri","sans-serif";color:#1F497D'> </span><o:p></o:p></p><p class=MsoNormal style='mso-margin-top-alt:auto;mso-margin-bottom-alt:auto'><span style='font-size:11.0pt;font-family:"Calibri","sans-serif";color:#1F497D'>After discussing rice hull combustion and gasification at some length you are now saying this is dangerous. Why, specifically? You have discussed the potential to emit cristobalite but there is no evidence of the hazard it presents. What evidence do you have that burning rice husks or rice straw is a health hazard?</span><o:p></o:p></p><p class=MsoNormal style='mso-margin-top-alt:auto;mso-margin-bottom-alt:auto'><span style='font-size:11.0pt;font-family:"Calibri","sans-serif";color:#1F497D'> </span><o:p></o:p></p><p class=MsoNormal style='mso-margin-top-alt:auto;mso-margin-bottom-alt:auto'><span style='font-size:11.0pt;font-family:"Calibri","sans-serif";color:#1F497D'>Tom </span><o:p></o:p></p><p class=MsoNormal style='mso-margin-top-alt:auto;mso-margin-bottom-alt:auto'><span style='font-size:11.0pt;font-family:"Calibri","sans-serif";color:#1F497D'> </span><o:p></o:p></p><p class=MsoNormal style='mso-margin-top-alt:auto;mso-margin-bottom-alt:auto'><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"'> Stoves [mailto:<a href="mailto:stoves-bounces@lists.bioenergylists.org" target="_blank">stoves-bounces@lists.bioenergylists.org</a>] <b>On Behalf Of </b>Paul Olivier<br><b>Sent:</b> Friday, June 14, 2013 8:56 PM<br><b>To:</b> JJ Claire; Discussion of biomass cooking stoves<br><b>Subject:</b> Re: [Stoves] Chimneys, rice husks [Ovens]</span><o:p></o:p></p><div><div><p class=MsoNormal style='mso-margin-top-alt:auto;mso-margin-bottom-alt:auto'> <o:p></o:p></p><div><div><div><div><p class=MsoNormal style='mso-margin-top-alt:auto;margin-bottom:12.0pt'>JJ,<o:p></o:p></p></div><p class=MsoNormal style='mso-margin-top-alt:auto;mso-margin-bottom-alt:auto'>I would not recommend that you burn rice hulls ir rice straw.<o:p></o:p></p></div><p class=MsoNormal style='mso-margin-top-alt:auto;margin-bottom:12.0pt'>In many cases this is quite dangerous.<o:p></o:p></p></div><p class=MsoNormal style='mso-margin-top-alt:auto;mso-margin-bottom-alt:auto'>Paul<o:p></o:p></p><div><div><div><div><div><div><p class=MsoNormal style='mso-margin-top-alt:auto;margin-bottom:12.0pt'> <o:p></o:p></p><div><p class=MsoNormal style='mso-margin-top-alt:auto;mso-margin-bottom-alt:auto'>On Sat, Jun 15, 2013 at 9:40 AM, JJ Claire <<a href="mailto:pugoclaire@yahoo.com" target="_blank">pugoclaire@yahoo.com</a>> wrote:<o:p></o:p></p><div><div><div><p class=MsoNormal style='mso-margin-top-alt:auto;mso-margin-bottom-alt:auto'><span style='font-size:14.0pt;font-family:"Bookman Old Style","serif"'>Greetings one and all,</span><o:p></o:p></p></div><div><p class=MsoNormal style='mso-margin-top-alt:auto;mso-margin-bottom-alt:auto'><span style='font-size:14.5pt;font-family:"Bookman Old Style","serif"'>I visit the Philippines often and usually stay about six months a year. </span><o:p></o:p></p></div><div><p class=MsoNormal style='mso-margin-top-alt:auto;mso-margin-bottom-alt:auto'><span style='font-size:14.5pt;font-family:"Bookman Old Style","serif"'>I often use a rice hull stove. I would like to get a plan to build a </span><o:p></o:p></p></div><div><p class=MsoNormal style='mso-margin-top-alt:auto;mso-margin-bottom-alt:auto'><span style='font-size:14.5pt;font-family:"Bookman Old Style","serif"'>concrete stove. I am also wondering if there is such a thing as building </span><o:p></o:p></p></div><div><p class=MsoNormal style='mso-margin-top-alt:auto;mso-margin-bottom-alt:auto'><span style='font-size:14.5pt;font-family:"Bookman Old Style","serif"'>an 'oven' using cement and/or concrete? I would like to build one, </span><o:p></o:p></p></div><div><p class=MsoNormal style='mso-margin-top-alt:auto;mso-margin-bottom-alt:auto'><span style='font-size:14.5pt;font-family:"Bookman Old Style","serif"'>a white model if possible, [vice a black model], if such a plan is </span><o:p></o:p></p></div><div><p class=MsoNormal style='mso-margin-top-alt:auto;mso-margin-bottom-alt:auto'><span style='font-size:14.5pt;font-family:"Bookman Old Style","serif"'>available and if the technology would be practical. We have a </span><o:p></o:p></p></div><div><p class=MsoNormal style='mso-margin-top-alt:auto;mso-margin-bottom-alt:auto'><span style='font-size:14.5pt;font-family:"Bookman Old Style","serif"'>lot of rice hulls and not all that much firewood. </span><o:p></o:p></p></div><div><p class=MsoNormal style='mso-margin-top-alt:auto;mso-margin-bottom-alt:auto'><span style='font-size:14.5pt;font-family:"Bookman Old Style","serif"'>I would be open to heating the oven with firewood and then </span><o:p></o:p></p></div><div><p class=MsoNormal style='mso-margin-top-alt:auto;mso-margin-bottom-alt:auto'><span style='font-size:14.5pt;font-family:"Bookman Old Style","serif"'>maintaining the heat level with or by burning rice hulls. I have</span><o:p></o:p></p></div><div><p class=MsoNormal style='mso-margin-top-alt:auto;mso-margin-bottom-alt:auto'><span style='font-size:14.5pt;font-family:"Bookman Old Style","serif"'>a lot of rice hulls and want to make the best use of the hulls.</span><o:p></o:p></p></div><div><p class=MsoNormal style='mso-margin-top-alt:auto;mso-margin-bottom-alt:auto'><span style='font-size:14.5pt;font-family:"Bookman Old Style","serif"'>I currently use the wood ashes to make lye so I can make soap, </span><o:p></o:p></p></div><div><p class=MsoNormal style='mso-margin-top-alt:auto;mso-margin-bottom-alt:auto'><span style='font-size:14.5pt;font-family:"Bookman Old Style","serif"'>but I have not used any ashes from rice hulls to make lye. I</span><o:p></o:p></p></div><div><p class=MsoNormal style='mso-margin-top-alt:auto;mso-margin-bottom-alt:auto'><span style='font-size:14.5pt;font-family:"Bookman Old Style","serif"'>wonder if making lye with rice hulls is possible.</span><o:p></o:p></p></div><div><p class=MsoNormal style='mso-margin-top-alt:auto;mso-margin-bottom-alt:auto'><span style='font-size:14.5pt;font-family:"Bookman Old Style","serif"'>The rice hull stoves we use are sort of a metal pail with a wire rack. </span><o:p></o:p></p></div><div><p class=MsoNormal style='mso-margin-top-alt:auto;mso-margin-bottom-alt:auto'><span style='font-size:14.5pt;font-family:"Bookman Old Style","serif"'>I am looking for a stove, hopefully one that is hot, medium and cool, </span><o:p></o:p></p></div><div><p class=MsoNormal style='mso-margin-top-alt:auto;mso-margin-bottom-alt:auto'><span style='font-size:14.5pt;font-family:"Bookman Old Style","serif"'>for cooking with rice hulls over a long number or years. </span><o:p></o:p></p></div><div><p class=MsoNormal style='mso-margin-top-alt:auto;mso-margin-bottom-alt:auto'><span style='font-size:14.5pt;font-family:"Bookman Old Style","serif"'>On our island, rice hulls are still burned to 'get rid of them', and </span><o:p></o:p></p></div><div><p class=MsoNormal style='mso-margin-top-alt:auto;mso-margin-bottom-alt:auto'><span style='font-size:14.5pt;font-family:"Bookman Old Style","serif"'>believe it or not, rice straw is still burned. I often ask neighboring</span><o:p></o:p></p></div><div><p class=MsoNormal style='mso-margin-top-alt:auto;mso-margin-bottom-alt:auto'><span style='font-size:14.5pt;font-family:"Bookman Old Style","serif"'>farmers to bring me their straw and provide them a small bit of </span><o:p></o:p></p></div><div><p class=MsoNormal style='mso-margin-top-alt:auto;mso-margin-bottom-alt:auto'><span style='font-size:14.5pt;font-family:"Bookman Old Style","serif"'>cash for doing so. We use the rice straw for making compost.</span><o:p></o:p></p></div><div><p class=MsoNormal style='mso-margin-top-alt:auto;mso-margin-bottom-alt:auto'><span style='font-size:14.5pt;font-family:"Bookman Old Style","serif"'>We add some rice hulls to the compost. Most of the rice hulls</span><o:p></o:p></p></div><div><p class=MsoNormal style='mso-margin-top-alt:auto;mso-margin-bottom-alt:auto'><span style='font-size:14.5pt;font-family:"Bookman Old Style","serif"'>are burned for fuel to cook with. We add the char from the cooking</span><o:p></o:p></p></div><div><p class=MsoNormal style='mso-margin-top-alt:auto;mso-margin-bottom-alt:auto'><span style='font-size:14.5pt;font-family:"Bookman Old Style","serif"'>process to the garden. I am wondering if we are making the best</span><o:p></o:p></p></div><div><p class=MsoNormal style='mso-margin-top-alt:auto;mso-margin-bottom-alt:auto'><span style='font-size:14.5pt;font-family:"Bookman Old Style","serif"'>use of the rice hulls and if the plans I am speaking of by post </span><o:p></o:p></p></div><div><p class=MsoNormal style='mso-margin-top-alt:auto;mso-margin-bottom-alt:auto'><span style='font-size:14.5pt;font-family:"Bookman Old Style","serif"'>are available. </span><o:p></o:p></p></div><div><p class=MsoNormal style='mso-margin-top-alt:auto;mso-margin-bottom-alt:auto'><span style='font-size:14.5pt;font-family:"Bookman Old Style","serif"'>Please inform, I am open to suggestions and direction.</span><o:p></o:p></p></div><div><p class=MsoNormal style='mso-margin-top-alt:auto;mso-margin-bottom-alt:auto'><span style='font-size:14.5pt;font-family:"Bookman Old Style","serif"'>Blessings,</span><o:p></o:p></p></div><div><p class=MsoNormal style='mso-margin-top-alt:auto;mso-margin-bottom-alt:auto'><span style='font-size:14.5pt;font-family:"Bookman Old Style","serif"'>JJ</span><o:p></o:p></p></div><div><p class=MsoNormal style='mso-margin-top-alt:auto;mso-margin-bottom-alt:auto'><span style='font-size:14.0pt;font-family:"Bookman Old Style","serif"'> </span><o:p></o:p></p></div><div><div><div><p class=MsoNormal style='mso-margin-top-alt:auto;mso-margin-bottom-alt:auto'><b><span style='font-family:"Arial","sans-serif"'>From:</span></b><span style='font-family:"Arial","sans-serif"'> "<a href="mailto:ajheggie@gmail.com" target="_blank">ajheggie@gmail.com</a>" <<a href="mailto:ajheggie@gmail.com" target="_blank">ajheggie@gmail.com</a>><br><b>To:</b> Discussion of biomass cooking stoves <<a href="mailto:stoves@lists.bioenergylists.org" target="_blank">stoves@lists.bioenergylists.org</a>> <br><b>Sent:</b> Friday, June 14, 2013 5:02 PM<br><b>Subject:</b> Re: [Stoves] Chimneys, rice husks</span><o:p></o:p></p></div><div><p class=MsoNormal style='mso-margin-top-alt:auto;margin-bottom:12.0pt'><br>[Default] On Fri, 14 Jun 2013 17:37:30 -0400,"Crispin<br>Pemberton-Pigott" <<a href="mailto:crispinpigott@gmail.com" target="_blank">crispinpigott@gmail.com</a>> wrote:<br><br>>We are experimenting in Indonesia with draft-operated buoyancy balancers to limit the pull to the ideal even when combustion conditions change in the large wood stoves. They are easy and cheap to make. They are mounted on the side of the stack of all oil furnaces.<br><br>We have used them on pellet stoves (which have their own id fans) to<br>limit draught on an insulated ss chimney that rose through 4 floors. I<br>wasn't entirely happy with the idea as it raised the possibility of<br>the boiler room getting combustion products if the seal wasn't good, I<br>would have been happier if the air was sucked from outside. In fact<br>there was subsequently a problem but this was down to poor<br>maintenance.<br><br>AJH<br><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" target="_blank">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" target="_blank">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/" target="_blank">http://stoves.bioenergylists.org/</a><br><br><o:p></o:p></p></div></div></div></div></div><p class=MsoNormal style='mso-margin-top-alt:auto;margin-bottom:12.0pt'><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" target="_blank">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" target="_blank">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/" target="_blank">http://stoves.bioenergylists.org/</a><o:p></o:p></p></div><p class=MsoNormal style='mso-margin-top-alt:auto;mso-margin-bottom-alt:auto'><br><br clear=all><br>-- <br>Paul A. Olivier PhD<br>26/5 Phu Dong Thien Vuong<br>Dalat<br>Vietnam<br><br>Louisiana telephone: <a href="tel:1-337-447-4124" target="_blank">1-337-447-4124</a> (rings Vietnam)<br>Mobile: 090-694-1573 (in Vietnam)<br>Skype address: Xpolivier<br><a href="http://www.esrla.com/" target="_blank">http://www.esrla.com/</a> <o:p></o:p></p></div></div></div></div></div></div></div></div></div></div></div><p class=MsoNormal style='margin-bottom:12.0pt'><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" target="_blank">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" target="_blank">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/" target="_blank">http://stoves.bioenergylists.org/</a><br><br><o:p></o:p></p></div><p class=MsoNormal><br><br clear=all><span style='color:#888888'><br>-- <br>Paul A. Olivier PhD<br>26/5 Phu Dong Thien Vuong<br>Dalat<br>Vietnam<br><br>Louisiana telephone: <a href="tel:1-337-447-4124" target="_blank">1-337-447-4124</a> (rings Vietnam)<br>Mobile: 090-694-1573 (in Vietnam)<br>Skype address: Xpolivier<br><a href="http://www.esrla.com/" target="_blank">http://www.esrla.com/</a> </span><o:p></o:p></p></div></div></div></div><p class=MsoNormal><span style='color:#888888'><br><br clear=all><br>-- <br>Paul A. Olivier PhD<br>26/5 Phu Dong Thien Vuong<br>Dalat<br>Vietnam<br><br>Louisiana telephone: <a href="tel:1-337-447-4124" target="_blank">1-337-447-4124</a> (rings Vietnam)<br>Mobile: 090-694-1573 (in Vietnam)<br>Skype address: Xpolivier<br><a href="http://www.esrla.com/" target="_blank">http://www.esrla.com/</a> </span><o:p></o:p></p></div><p class=MsoNormal style='margin-bottom:12.0pt'><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" target="_blank">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" target="_blank">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/" target="_blank">http://stoves.bioenergylists.org/</a><br><br><o:p></o:p></p></div><p class=MsoNormal><o:p> </o:p></p></div></div></div><p class=MsoNormal style='margin-bottom:12.0pt'><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" target="_blank">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" target="_blank">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/" target="_blank">http://stoves.bioenergylists.org/</a><br><br><o:p></o:p></p></div><p class=MsoNormal><br><br clear=all><br>-- <br>Paul A. Olivier PhD<br>26/5 Phu Dong Thien Vuong<br>Dalat<br>Vietnam<br><br>Louisiana telephone: <a href="tel:1-337-447-4124" target="_blank">1-337-447-4124</a> (rings Vietnam)<br>Mobile: 090-694-1573 (in Vietnam)<br>Skype address: Xpolivier<br><a href="http://www.esrla.com/" target="_blank">http://www.esrla.com/</a> <o:p></o:p></p></div></div></div><p class=MsoNormal style='margin-bottom:12.0pt'><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" target="_blank">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" target="_blank">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/" target="_blank">http://stoves.bioenergylists.org/</a><br><br><o:p></o:p></p></div><p class=MsoNormal><o:p> </o:p></p></div></div></div><p class=MsoNormal style='margin-bottom:12.0pt'><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" target="_blank">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" target="_blank">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/" target="_blank">http://stoves.bioenergylists.org/</a><br><br><o:p></o:p></p></div><p class=MsoNormal><br><br clear=all><br>-- <br>Paul A. Olivier PhD<br>26/5 Phu Dong Thien Vuong<br>Dalat<br>Vietnam<br><br>Louisiana telephone: <a href="tel:1-337-447-4124" target="_blank">1-337-447-4124</a> (rings Vietnam)<br>Mobile: 090-694-1573 (in Vietnam)<br>Skype address: Xpolivier<br><a href="http://www.esrla.com/" target="_blank">http://www.esrla.com/</a> <o:p></o:p></p></div></div></div><p class=MsoNormal style='margin-bottom:12.0pt'><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" target="_blank">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" target="_blank">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/" target="_blank">http://stoves.bioenergylists.org/</a><br><br><o:p></o:p></p></div><p class=MsoNormal><o:p> </o:p></p></div></div></div><p class=MsoNormal style='margin-bottom:12.0pt'><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" target="_blank">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/" target="_blank">http://stoves.bioenergylists.org/</a><br><br><o:p></o:p></p></div><p class=MsoNormal><br><br clear=all><br>-- <br>Paul A. Olivier PhD<br>26/5 Phu Dong Thien Vuong<br>Dalat<br>Vietnam<br><br>Louisiana telephone: 1-337-447-4124 (rings Vietnam)<br>Mobile: 090-694-1573 (in Vietnam)<br>Skype address: Xpolivier<br><a href="http://www.esrla.com/" target="_blank">http://www.esrla.com/</a> <o:p></o:p></p></div></div></div></div></div></body></html>