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</o:shapelayout></xml><![endif]--></head><body lang=EN-US link="#0563C1" vlink="#954F72"><div class=WordSection1><p class=MsoNormal><b><span style='font-size:14.0pt;color:#7030A0'>Dear Crispin and all,<o:p></o:p></span></b></p><p class=MsoNormal><b><span style='font-size:14.0pt;color:#7030A0'><o:p> </o:p></span></b></p><p class=MsoNormal><b><span style='font-size:14.0pt;color:#7030A0'>To cut-to-the-chase and avoid all the testing that likely means little or endless interpretation of all the variables I am thinking a test on biomass where you burn it and determine burn characteristics. <o:p></o:p></span></b></p><p class=MsoNormal><b><span style='font-size:14.0pt;color:#7030A0'>Suggest making a series of pipes of different ‘standard sizes’ with metal screen at the bottom. Add a known and established amount of fire starter then tap in the fuel. With Boy Scout skills light the starter from below the screen using one match and then monitor the progress of the combustion. Could be temperature of the pipe, height of the flame for X duration, completeness of combustion etc. all with natural draft. This could better predict how a specific fuel will work in a group of stoves. The pipes size could be based on standard size of typical combustion chambers. One could report ‘Using standard pipe #2 this fuel gave the following characteristic: Temperature profile along the pipe, temperature profile 30cm above pipe, length of time to completion, Biomass left, smoke observed etc.’ A simple test anyone could do when describing the fuel used when testing and comparing a group of stoves. <o:p></o:p></span></b></p><p class=MsoNormal><b><span style='font-size:14.0pt;color:#7030A0'><o:p> </o:p></span></b></p><p class=MsoNormal><b><span style='font-size:14.0pt;color:#7030A0'>Regards<o:p></o:p></span></b></p><p class=MsoNormal><b><span style='font-size:14.0pt;color:#7030A0'><o:p> </o:p></span></b></p><p class=MsoNormal><b><span style='font-size:14.0pt;color:#7030A0'>Frank<o:p></o:p></span></b></p><p class=MsoNormal><b><span style='font-size:14.0pt;color:#7030A0'><o:p> </o:p></span></b></p><p class=MsoNormal><b><span style='font-size:14.0pt;color:#7030A0'><o:p> </o:p></span></b></p><p class=MsoNormal><span style='font-size:12.0pt;color:#7030A0;mso-fareast-language:EN-US'>Thanks <o:p></o:p></span></p><p class=MsoNormal><span style='font-size:12.0pt;color:#7030A0;mso-fareast-language:EN-US'><o:p> </o:p></span></p><p class=MsoNormal><span style='font-size:12.0pt;color:#7030A0;mso-fareast-language:EN-US'>Frank Shields<o:p></o:p></span></p><p class=MsoNormal><span style='font-size:12.0pt;color:#7030A0;mso-fareast-language:EN-US'><o:p> </o:p></span></p><p class=MsoNormal><span style='font-size:12.0pt;color:#7030A0;mso-fareast-language:EN-US'>BioChar Division<o:p></o:p></span></p><p class=MsoNormal><span style='font-size:12.0pt;color:#7030A0;mso-fareast-language:EN-US'>Control Laboratories, Inc. <o:p></o:p></span></p><p class=MsoNormal><span style='font-size:12.0pt;color:#7030A0;mso-fareast-language:EN-US'>42 Hangar Way<o:p></o:p></span></p><p class=MsoNormal><span style='font-size:12.0pt;color:#7030A0;mso-fareast-language:EN-US'>Watsonville, CE 95076<o:p></o:p></span></p><p class=MsoNormal><span style='font-size:12.0pt;color:#7030A0;mso-fareast-language:EN-US'><o:p> </o:p></span></p><p class=MsoNormal><span style='font-size:12.0pt;color:#7030A0;mso-fareast-language:EN-US'>(831) 724-5422 tel<o:p></o:p></span></p><p class=MsoNormal><span style='font-size:12.0pt;color:#7030A0;mso-fareast-language:EN-US'>(81) 724-3188 fax<o:p></o:p></span></p><p class=MsoNormal><span style='font-size:12.0pt;color:#7030A0;mso-fareast-language:EN-US'><a href="mailto:frank@biocharlab.com"><span style='color:blue'>frank@biocharlab.com</span></a><o:p></o:p></span></p><p class=MsoNormal><span style='font-size:12.0pt;color:#7030A0;mso-fareast-language:EN-US'>www.controllabs.com<o:p></o:p></span></p><p class=MsoNormal><b><span style='font-size:14.0pt;color:#7030A0'><o:p> </o:p></span></b></p><p class=MsoNormal><b><span style='font-size:14.0pt;color:#7030A0'><o:p> </o:p></span></b></p><p class=MsoNormal><b><span style='font-size:14.0pt;color:#7030A0'><o:p> </o:p></span></b></p><p class=MsoNormal><b><span style='font-size:14.0pt;color:#7030A0'><o:p> </o:p></span></b></p><div><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";mso-fareast-language:EN-US'>From:</span></b><span style='font-size:10.0pt;font-family:"Tahoma","sans-serif";mso-fareast-language:EN-US'> Stoves [mailto:stoves-bounces@lists.bioenergylists.org] <b>On Behalf Of </b>Crispin Pemberton-Pigott<br><b>Sent:</b> Wednesday, June 12, 2013 12:12 PM<br><b>To:</b> 'Discussion of biomass cooking stoves'<br><b>Subject:</b> Re: [Stoves] Burning wet wood<o:p></o:p></span></p></div></div><p class=MsoNormal><o:p> </o:p></p><p class=MsoNormal><span lang=EN-CA style='color:#1F497D;mso-fareast-language:EN-US'>Dear Frank<o:p></o:p></span></p><p class=MsoNormal><span lang=EN-CA style='color:#1F497D;mso-fareast-language:EN-US'><o:p> </o:p></span></p><p class=MsoNormal><span lang=EN-CA style='color:#1F497D;mso-fareast-language:EN-US'>Burning very dry wood is difficult and it makes a lot of smoke. That is why stoves should not be evaluated with very dry wood when they are designed to burn ‘ordinary wood’.<o:p></o:p></span></p><p class=MsoNormal><span lang=EN-CA style='color:#1F497D;mso-fareast-language:EN-US'><o:p> </o:p></span></p><p class=MsoNormal><span lang=EN-CA style='color:#1F497D;mso-fareast-language:EN-US'>If you get the conditions right for the early fire they are double-guaranteed o be wrong for the late fire. Much better a continuous input of damp material.<o:p></o:p></span></p><p class=MsoNormal><span lang=EN-CA style='color:#1F497D;mso-fareast-language:EN-US'><o:p> </o:p></span></p><p class=MsoNormal><span lang=EN-CA style='color:#1F497D;mso-fareast-language:EN-US'>Regards<o:p></o:p></span></p><p class=MsoNormal><span lang=EN-CA style='color:#1F497D;mso-fareast-language:EN-US'>Crispin<o:p></o:p></span></p><div><div style='border:none;border-top:solid #E1E1E1 1.0pt;padding:3.0pt 0in 0in 0in'><p class=MsoNormal><span lang=EN-CA style='color:#1F497D;mso-fareast-language:EN-US'>++++++<o:p></o:p></span></p><p class=MsoNormal><o:p> </o:p></p></div></div><p class=MsoNormal><span lang=EN-CA><o:p> </o:p></span></p><p class=MsoNormal><b><span style='font-size:14.0pt;color:#7030A0'>Dear Crispin, Tom and all,<o:p></o:p></span></b></p><p class=MsoNormal><b><span style='font-size:14.0pt;color:#7030A0'><o:p> </o:p></span></b></p><p class=MsoNormal><b><span style='font-size:14.0pt;color:#7030A0'>I would think a batch mode would be better. A continuous mode means you have water vapor all the time. In batch mode one would heat and find the gas temperature goes to 100c. Then when the water is finally burned off the temperature rises and you can then push the fuel forward to do what you want to do with the now dry wood. Not sure this happens and have not seen a graph of this but think this is what would happen. <o:p></o:p></span></b></p><p class=MsoNormal><b><span style='font-size:14.0pt;color:#7030A0'><o:p> </o:p></span></b></p><p class=MsoNormal><b><span style='font-size:14.0pt;color:#7030A0'>Frank<o:p></o:p></span></b></p></div></body></html>