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</o:shapelayout></xml><![endif]--></head><body 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'>Dear Richard in NW Obamaland<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'>Agreed. I was looking at the size of the opening at the top and wondering how it burned. I have been working on the use of flame tubes a-la-BLDD6 and earlier versions where the fire is enclosed in a fairly small round channel.<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'>A couple of weeks ago I tried installing a 57mm I.D. flame tube in a horizontal draft two-pot stove (I will add pictures later) to see if the smoke could be burned post-pot-1. It worked pretty well. I do not yet have definitive numbers but as a design approach it definitely worked. There are a number of stoves that have far too much space after the fire, allowing the smoke and flames to take separate routs to the outlet.<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'>So the stove in question has a huge outlet so if smoke manages to get to a corner, it has ample space to escape to the margins away from Pot 2. It seems to me to be worth investigation the % of smoke that can be burned by keeping the smoke and flames together for a while. There are several stoves with a suitable layout for this. One is the three-pot stove used in Indonesia consisting of separate clay round sections with interconnecting tunnels. If the tunnels were reduced in diameter to the point at which they became an impediment to gas flow, that would maximise the chance of burning the smoke. If the flame was entering the tube in the simple experiment I conducted, the smoke was dramatically reduced showing a reproducible and consistent effect.<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 really like the cast iron grate in the Prakti stove with a thickened front bar that will resist banging from heavy wood sitting on it.<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'>Crispin<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>Crispin,<o:p></o:p></p><div><p class=MsoNormal>This seems to be c similar o what was coming from the Dutch TOOL foundation in (A ' dam) in the late 70's. They were trying to replicate them thru our center (AATP) during that time but it never really took on. <o:p></o:p></p><div><p class=MsoNormal>Richard Stanley<o:p></o:p></p></div><div><p class=MsoNormal><o:p> </o:p></p></div></div></div></body></html>