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</o:shapelayout></xml><![endif]--></head><body lang=EN-US link=blue vlink=purple><div class=WordSection1><p class=MsoNormal><b><span style='font-size:14.0pt;font-family:"Calibri","sans-serif";color:#1F497D'>Stovers, <o:p></o:p></span></b></p><p class=MsoNormal><b><span style='font-size:14.0pt;font-family:"Calibri","sans-serif";color:#1F497D'><o:p> </o:p></span></b></p><p class=MsoNormal><b><span style='font-size:14.0pt;font-family:"Calibri","sans-serif";color:#1F497D'>One question I have been wondering (and wonder if it has been tested) is what is the most optimum temperature for the fire box? For example will pyrolysis gasses produced at 450c and sent to the secondary produce a more or less polluted exhaust gas than one with a much higher temperature fire box? I know there is a great deal of work that has gone into insulating stoves, so hotter must be better but I wonder if it really is. TLUD do not burn that hot I’m thinking. And if a cooler fire box does just as good a job as a hotter one we could produce more char rather than just burn it up well away from the pot. <o:p></o:p></span></b></p><p class=MsoNormal><b><span style='font-size:14.0pt;font-family:"Calibri","sans-serif";color:#1F497D'><o:p> </o:p></span></b></p><p class=MsoNormal><b><span style='font-size:14.0pt;font-family:"Calibri","sans-serif";color:#1F497D'>An experiment to show this might be to take a furnace placed on its back with no primary air. Fit a burner on top where the door was, fill with fuel and set the temperature at 450c. Check the emissions after the secondary. Keep increasing the heat using new biomass and plot a line of CO2 and particles. We could determine the optimum temperature for the fire box or maximum needed. <o:p></o:p></span></b></p><p class=MsoNormal><b><span style='font-size:14.0pt;font-family:"Calibri","sans-serif";color:#1F497D'><o:p> </o:p></span></b></p><p class=MsoNormal><b><span style='font-size:14.0pt;font-family:"Calibri","sans-serif";color:#1F497D'> <o:p></o:p></span></b></p><p class=MsoNormal><b><span style='font-size:14.0pt;font-family:"Calibri","sans-serif";color:#1F497D'>Regards<o:p></o:p></span></b></p><p class=MsoNormal><b><span style='font-size:14.0pt;font-family:"Calibri","sans-serif";color:#1F497D'><o:p> </o:p></span></b></p><p class=MsoNormal><b><span style='font-size:14.0pt;font-family:"Calibri","sans-serif";color:#1F497D'>Frank<o:p></o:p></span></b></p><p class=MsoNormal><b><span style='font-size:14.0pt;font-family:"Calibri","sans-serif";color:#1F497D'><o:p> </o:p></span></b></p><p class=MsoNormal><b><span style='font-family:"Calibri","sans-serif";color:#1F497D'>Frank Shields<o:p></o:p></span></b></p><p class=MsoNormal><b><span style='font-family:"Calibri","sans-serif";color:#1F497D'>Control Laboratories; Inc.<o:p></o:p></span></b></p><p class=MsoNormal><b><span style='font-family:"Calibri","sans-serif";color:#1F497D'>42 Hangar Way<o:p></o:p></span></b></p><p class=MsoNormal><b><span style='font-family:"Calibri","sans-serif";color:#1F497D'>Watsonville, CA 95076<o:p></o:p></span></b></p><p class=MsoNormal><b><span style='font-family:"Calibri","sans-serif";color:#1F497D'>(831) 724-5422 tel<o:p></o:p></span></b></p><p class=MsoNormal><b><span style='font-family:"Calibri","sans-serif";color:#1F497D'>(831) 724-3188 fax<o:p></o:p></span></b></p><p class=MsoNormal><b><span style='font-family:"Calibri","sans-serif";color:#1F497D'>frank@biocharlab.com<o:p></o:p></span></b></p><p class=MsoNormal><b><span style='font-family:"Calibri","sans-serif";color:#1F497D'>www.controllabs.com<o:p></o:p></span></b></p><p class=MsoNormal><b><span style='font-size:14.0pt;font-family:"Calibri","sans-serif";color:#1F497D'><o:p> </o:p></span></b></p><p class=MsoNormal><b><span style='font-size:14.0pt;font-family:"Calibri","sans-serif";color:#1F497D'><o:p> </o:p></span></b></p></div></body></html>