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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:12.0pt;font-family:"Brussels","serif"'>Greetings Stovers, <o:p></o:p></span></b></p><p class=MsoNormal><b><span style='font-size:12.0pt;font-family:"Brussels","serif"'><o:p> </o:p></span></b></p><p class=MsoNormal><b><span style='font-size:12.0pt;font-family:"Brussels","serif"'><o:p> </o:p></span></b></p><p class=MsoNormal><b><span style='font-size:12.0pt;font-family:"Brussels","serif"'>Suggestion for a different method for rating stoves:<o:p></o:p></span></b></p><p class=MsoNormal><b><span style='font-size:12.0pt;font-family:"Brussels","serif"'><o:p> </o:p></span></b></p><p class=MsoNormal><b><span style='font-size:12.0pt;font-family:"Brussels","serif"'>In a block of biomass there is energy and that energy can be used in many ways: Boiling water, char for soil, char for street vender, heating a room, biomass left for the next run etc… We can’t place values on all these different parts because that value depends on the worth a person gives it. But we can split it into percent energy fractions. There are too many different values to use them as a good rating system for comparing our small stoves with a single number.<o:p></o:p></span></b></p><p class=MsoNormal><b><span style='font-size:12.0pt;font-family:"Brussels","serif"'><o:p> </o:p></span></b></p><p class=MsoNormal><b><span style='font-size:12.0pt;font-family:"Brussels","serif"'>BUT<o:p></o:p></span></b></p><p class=MsoNormal><b><span style='font-size:12.0pt;font-family:"Brussels","serif"'><o:p> </o:p></span></b></p><p class=MsoNormal><b><span style='font-size:12.0pt;font-family:"Brussels","serif"'>There is a single value in this process that we can use to rate stoves and that is Wasted Energy. Each stove produces a single energy waste value. That is the Total Energy of the biomass –( energy found in the boiling water (task) + found in the left over products). A stove that has the least wasted energy wins. A stove is picked based on the a) least wasted energy and b) the value the client gives for the energy fractions. <o:p></o:p></span></b></p><p class=MsoNormal><b><span style='font-size:12.0pt;font-family:"Brussels","serif"'><o:p> </o:p></span></b></p><p class=MsoNormal><b><span style='font-size:12.0pt;font-family:"Brussels","serif"'>Wasted energy occurs during combustion and it comes in several ways:<o:p></o:p></span></b></p><p class=MsoNormal><b><span style='font-size:12.0pt;font-family:"Brussels","serif"'>I think the most common waste is when the E450sf (the 28% of the solid-fixed fraction (C _> CO) heating the stove body) has done its job of drying fuel and providing enough heat to gasify the biomass and heat the gases to optimum temperatures for the secondary – but then continues to combust biomass until the excess turns to ash. Excess heat in the stove body is wasted heat. Also the gap(s), drafts and poor design of the stove can result in wasted energy. This may give the TLUD the upper hand! Depending on the value the client gives the energy fractions of the stove. <o:p></o:p></span></b></p><p class=MsoNormal><b><span style='font-size:12.0pt;font-family:"Brussels","serif"'><o:p> </o:p></span></b></p><p class=MsoNormal><b><span style='font-size:12.0pt;font-family:"Brussels","serif"'>Regards<o:p></o:p></span></b></p><p class=MsoNormal><b><span style='font-size:12.0pt;font-family:"Brussels","serif"'><o:p> </o:p></span></b></p><p class=MsoNormal><b><span style='font-size:12.0pt;font-family:"Brussels","serif"'>Frank<o:p></o:p></span></b></p><p class=MsoNormal><b><span style='font-size:12.0pt;font-family:"Brussels","serif"'><o:p> </o:p></span></b></p><p class=MsoNormal><b><span style='font-size:12.0pt;font-family:"Brussels","serif"'> <o:p></o:p></span></b></p><p class=MsoNormal><b><span style='font-size:12.0pt;font-family:"Brussels","serif"'><o:p> </o:p></span></b></p><p class=MsoNormal><b><span style='font-size:12.0pt;font-family:"Brussels","serif"'><o:p> </o:p></span></b></p><p class=MsoNormal><b><span style='font-size:12.0pt;font-family:"Brussels","serif"'> <o:p></o:p></span></b></p><p class=MsoNormal><b><span style='font-size:12.0pt;font-family:"Brussels","serif"'><o:p> </o:p></span></b></p><p class=MsoNormal><b><span style='font-size:12.0pt;font-family:"Brussels","serif"'> <o:p></o:p></span></b></p><p class=MsoNormal><b><span style='font-size:12.0pt;font-family:"Brussels","serif"'><o:p> </o:p></span></b></p><p class=MsoNormal><b><span style='font-size:12.0pt;font-family:"Brussels","serif"'><o:p> </o:p></span></b></p><p class=MsoNormal><b><span style='font-size:12.0pt;font-family:"Brussels","serif"'> <o:p></o:p></span></b></p><p class=MsoNormal><b><span style='font-size:12.0pt;font-family:"Brussels","serif"'><o:p> </o:p></span></b></p><p class=MsoNormal><b><span style='font-size:12.0pt;font-family:"Brussels","serif"'><o:p> </o:p></span></b></p><p class=MsoNormal><b><span style='font-size:12.0pt'>Frank Shields<o:p></o:p></span></b></p><p class=MsoNormal><b><span style='font-size:12.0pt'>Control Laboratories; Inc.<o:p></o:p></span></b></p><p class=MsoNormal><b><span style='font-size:12.0pt'>42 Hangar Way<o:p></o:p></span></b></p><p class=MsoNormal><b><span style='font-size:12.0pt'>Watsonville, CA 95076<o:p></o:p></span></b></p><p class=MsoNormal><b><span style='font-size:12.0pt'>(831) 724-5422 tel<o:p></o:p></span></b></p><p class=MsoNormal><b><span style='font-size:12.0pt'>(831) 724-3188 fax<o:p></o:p></span></b></p><p class=MsoNormal><b><span style='font-size:12.0pt'>frank@biocharlab.com<o:p></o:p></span></b></p><p class=MsoNormal><b><span style='font-size:12.0pt'>www.controllabs.com<o:p></o:p></span></b></p><p class=MsoNormal><o:p> </o:p></p></div></body></html>