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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'>Marc,<o:p></o:p></span></p><p class=MsoNormal><span style='font-size:11.0pt;font-family:"Calibri","sans-serif";color:#1F497D'><br>Thanks for the link. You can find three of the authors at the photos I posted from the 2004 ETHOS meeting in Seattle where Mark Bryden and dean Still invited Prasad, Visser and Verhaart. <o:p></o:p></span></p><p class=MsoNormal><span style='font-size:11.0pt;font-family:"Calibri","sans-serif";color:#1F497D'>http://www.bioenergylists.org/stovesdoc/ethos/ethos_jan_04.htm<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'>Larry Winiarski is also pictured. Larry adapted the feeding concept of the old ("Conifer") sawdust burners to continuously side feed a rocket stove similar to his self feeding chumal (ETHOS 2005) <o:p></o:p></span></p><p class=MsoNormal><span style='font-size:11.0pt;font-family:"Calibri","sans-serif";color:#1F497D'>Conifer http://www.hernironworks.com/conifer.html<o:p></o:p></span></p><p class=MsoNormal><span style='font-size:11.0pt;font-family:"Calibri","sans-serif";color:#1F497D'>He also used the concept for burning risk husks to fire boilers at a tea plantation. <o:p></o:p></span></p><p class=MsoNormal><span style='font-size:11.0pt;font-family:"Calibri","sans-serif";color:#1F497D'>http://www.bioenergylists.org/stovesdoc/ethos/ethos_jan_05.html<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'>The ARTI Vivek can burn sawdust. <o:p></o:p></span></p><p class=MsoNormal><span style='font-size:11.0pt;font-family:"Calibri","sans-serif";color:#1F497D'>http://www.samuchit.com/index.php?option=com_content&view=article&id=1&Itemid=3<o:p></o:p></span></p><p class=MsoNormal><span style='font-size:11.0pt;font-family:"Calibri","sans-serif";color:#1F497D'>http://www.arti-india.org/<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'>How about the Mayon Turbo by REAP?<o:p></o:p></span></p><p class=MsoNormal><span style='font-size:11.0pt;font-family:"Calibri","sans-serif";color:#1F497D'>http://www.reap-canada.com/bio_and_climate_3_3_1.htm<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'>Richard described a sawdust stoves in 2004 at:<o:p></o:p></span></p><p class=MsoNormal><span style='font-size:11.0pt;font-family:"Calibri","sans-serif";color:#1F497D'>http://listserv.repp.org/pipermail/stoves_listserv.repp.org/2004-November/000374.html<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'>I first learned about this stove in the late 1970s from one of our clients. We had designed a circular portable sawmill that became popular in developing countries. (http://www.mightymitesawmills.com/ ) when you square a log you get slabs and edgings, sawdust and lumber. In developing countries villagers used the slabs and edgings from the mill for firewood or to build houses. The wide kerf (width of cut) of the circular saw converts about 20% of the log to sawdust. We always hoped to find efficient ways to convert the waste materials to heat and power. A salesman returning from Africa described villagers burning sawdust from the mill in what he called a "Ghana stove", which was essentially what Richard described. My notes from building and testing the stove December 21, 1979 remind me that it was difficult to get a consistent burn or control air throughout the burn. Measuring air flows and analyzing gases was also a challenge. <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'>I hope to see many of you at ETHOS in Seattle later this month. <o:p></o:p></span></p><p class=MsoNormal><span style='font-size:11.0pt;font-family:"Calibri","sans-serif";color:#1F497D'>http://www.vrac.iastate.edu/ethos/conference.php<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'>Regards,<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 Miles<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'><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'><o:p> </o:p></span></p><div style='border:none;border-top:solid #B5C4DF 1.0pt;padding:3.0pt 0in 0in 0in'><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-bounces@lists.bioenergylists.org [mailto:stoves-bounces@lists.bioenergylists.org] <b>On Behalf Of </b>Marc Pare<br><b>Sent:</b> Sunday, January 16, 2011 7:10 PM<br><b>To:</b> Discussion of biomass cooking stoves<br><b>Subject:</b> Re: [Stoves] old patent-paper about a saw-dust stoves<o:p></o:p></span></p></div><p class=MsoNormal><o:p> </o:p></p><p class=MsoNormal style='margin-bottom:12.0pt'>I plodded through the bioenergylists archives looking for sawdust stove discussions a few months ago in the hopes of finding information the would be helpful for natural draft rice husk stoves. I believe the most fruitful thing to search for is "WWII sawdust stove"<br><br>I only found one class of design: an outer cylinder and inner tube. You light the sawdust from the bottom and the inner tube draws air to sustain the combustion. It is possible to just use a stick and pack the sawdust instead.<br><br>There are a few stoves in <a href="http://www.appropedia.org/A_Woodstove_Compendium">A Woodstove Compendium</a> that operate on this principle. I had some Bolivians draw me such a design when they visited our group in Atlanta. Apparently they are rather commonly used for drying/curing operations.<br><br>It's not hard at all to get them going. In fact, we melted a few of our sheet metal cylinders because they would go out of control. Made some nice looking sculptures as a result.<br><br>Has anyone had different experiences? I was not able to find anything recent on sawdust (and other fine bio-material) combustion in cook stoves. <br><br clear=all>Marc Paré<br>B.S. Mechanical Engineering<br>Georgia Institute of Technology | Université de Technologie de Compiègne<br><br>my cv, etc. | <a href="http://notwandering.com" target="_blank">http://notwandering.com</a><br><br><o:p></o:p></p><p class=MsoNormal><o:p> </o:p></p></div></body></html>