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</o:shapelayout></xml><![endif]--></head><body bgcolor=white 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'>Alex,<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 was thinking of Dick’s Jetstream. He employed a lot of good combustion principles to stick wood burning at a time when we were just migrating from the “tin wonder” wood stoves. <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 didn’t realize that there was a Wikipedia page 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'>Thanks<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 <o:p></o:p></span></p><p class=MsoNormal><a name="_MailEndCompose"><span style='font-size:11.0pt;font-family:"Calibri","sans-serif";color:#1F497D'><o:p> </o:p></span></a></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";color:windowtext'>From:</span></b><span style='font-size:10.0pt;font-family:"Tahoma","sans-serif";color:windowtext'> Gasification [mailto:gasification-bounces@lists.bioenergylists.org] <b>On Behalf Of </b>Alex English<br><b>Sent:</b> Friday, December 27, 2013 4:41 PM<br><b>To:</b> Discussion of biomass pyrolysis and gasification<br><b>Subject:</b> Re: [Gasification] Wood heating in the UK - whole log gasification<o:p></o:p></span></p></div></div><p class=MsoNormal><o:p> </o:p></p><div><p class=MsoNormal>Ken,<br><br>If you haven't already heard of the Jetstream<br><span style='font-size:10.0pt;font-family:"Arial","sans-serif";background:white'>The wood was loaded into a vertical tube which passed through the water jacket into a refractory lined combustion chamber. In this chamber the burning took place and was limited to the ends of the logs. The water jacket prevented the upper parts of the logs from burning so they would gravity feed as the log was consumed.</span><br><br><a href="http://en.wikipedia.org/wiki/Jetstream_furnace">http://en.wikipedia.org/wiki/Jetstream_furnace</a><br><br>Not a chimney powered stove.<br><br>Alex<br><br><br>On 27/12/2013 6:47 PM, Jeff Davis wrote:<o:p></o:p></p></div><blockquote style='margin-top:5.0pt;margin-bottom:5.0pt'><p class=MsoNormal>Hi Ken, <br><br><br><br>Thanks for the interest! <br><br><br><br><o:p></o:p></p><p class=MsoNormal style='margin-bottom:12.0pt'>This is my main unknown as yet, how would a split log combust and pyrolise, if presented to the ember bed, cut end first. I suspect that there would be little penetration of heat axially, directly through the end, because the ring structure presents a tough barrier. Therefore, most burning would have to come radially, and so air nozzles would have to be positioned to act radially on the sides of the log. <o:p></o:p></p><p class=MsoNormal><br>OK, I should try cutting the wood at 45 deg instead of 90. Interesting! <br><br><br><br><o:p></o:p></p><p class=MsoNormal style='margin-bottom:12.0pt'>In your design, it looks similar to a Rocket, but with the fuel container near vertical. However, the top loading hatch looks fairly airtight? - so unlike a rocket, there is no air drawn through fuel. <o:p></o:p></p><p class=MsoNormal><br>The next test run will be at almost vertical and more distance between the tube and grate. <br><br>This has only run for short periods of time but once it's burning OK I have been leaving it up. In the middle of the door is an adjustable air inlet. It's rusted open because of the nasty acidic coal that was burned in it for a few years. <br><br><br><br><o:p></o:p></p><p class=MsoNormal>Nevertheless it appears to burn well and produces a healthy amount of good sized charcoal. I would be very interested to know how it copes with a larger log. Perhaps by way of experiment, one could be loaded, instead of the 2" material, to see how it fairs - this would be very useful information. <o:p></o:p></p><p class=MsoNormal style='margin-bottom:12.0pt'><br><br>In due time. <br><br><br><br><br>Best wishes, <br>Jeff <br><br>_______________________________________________ <br>Gasification mailing list <br><br>to Send a Message to the list, use the email address <br><a href="mailto:Gasification@bioenergylists.org">Gasification@bioenergylists.org</a> <br><br>to UNSUBSCRIBE or Change your List Settings use the web page <br><a href="http://lists.bioenergylists.org/mailman/listinfo/gasification_lists.bioenergylists.org">http://lists.bioenergylists.org/mailman/listinfo/gasification_lists.bioenergylists.org</a> <br><br>for more Gasifiers, News and Information see our web site: <br><a href="http://gasifiers.bioenergylists.org/">http://gasifiers.bioenergylists.org/</a> <o:p></o:p></p></blockquote><p class=MsoNormal style='margin-bottom:12.0pt'><br><br><br><o:p></o:p></p></div></body></html>