<html><head><meta http-equiv="Content-Type" content="text/html charset=utf-8"></head><body style="word-wrap: break-word; -webkit-nbsp-mode: space; -webkit-line-break: after-white-space;" class="">Dear Dean, Stovers,<div class=""><br class=""></div><div class="">I have not worked with stoves but working with all types of pellets (paper, manures, etc.) and good quality wood pellets I find they burn in pipes very poorly and seem they are really just good for pellet stoves dropping in one at a time. </div><div class="">I think you may be on to something in regards to torrifying to some extent before using to get a cleaner combustion. I see the real challenge is quality control because torrification takes place in a very narrow range and it is so easy to have a ‘run-a-way’ combustion that heats higher than the setting you want. I was able to achieve that in my pipes but only after much practice and s l o w l y raising the temperature to desired amount. Not sure how this would be done commercially. It would be a very interesting project. </div><div class=""><br class=""></div><div class="">We also may be able to get clean combustion by finding constituents in the pellets (and all biomass for that matter) that create these large organic volatile structures that give problems and eliminate them from the fuel. </div><div class=""><br class=""></div><div class="">Regards</div><div class=""><br class=""></div><div class=""><br class=""></div><div class="">Frank</div><div class=""><br class=""></div><div class=""> </div><div class=""><br class=""></div><div class=""><br class=""></div><div class=""><br class=""></div><div class=""><br class=""><div apple-content-edited="true" class="">
<div style="color: rgb(0, 0, 0); letter-spacing: normal; orphans: auto; text-align: start; text-indent: 0px; text-transform: none; white-space: normal; widows: auto; word-spacing: 0px; -webkit-text-stroke-width: 0px; word-wrap: break-word; -webkit-nbsp-mode: space; -webkit-line-break: after-white-space;" class=""><div class="">Frank Shields</div><div class=""><a href="mailto:franke@cruzio.com" class="">franke@cruzio.com</a></div><div class=""><br class=""></div></div><br class="Apple-interchange-newline"><br class="Apple-interchange-newline">
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<br class=""><div><blockquote type="cite" class=""><div class="">On Sep 3, 2015, at 12:28 PM, Dean Still <<a href="mailto:deankstill@gmail.com" class="">deankstill@gmail.com</a>> wrote:</div><br class="Apple-interchange-newline"><div class=""><div dir="ltr" class="">Hi Frank,<div class=""><br class=""></div><div class="">After limited experience in Uganda and China my experience is that it's not easy to make clean burning recipes for biomass pellets. <div class=""><br class=""></div><div class="">Seems like the torrified pellets emit less PM but we need to do more tests.</div><div class=""><br class=""></div><div class="">Best,</div><div class=""><br class=""></div><div class="">Dean</div></div></div><div class="gmail_extra"><br class=""><div class="gmail_quote">On Thu, Sep 3, 2015 at 8:44 AM, Frank Shields <span dir="ltr" class=""><<a href="mailto:franke@cruzio.com" target="_blank" class="">franke@cruzio.com</a>></span> wrote:<br class=""><blockquote class="gmail_quote" style="margin:0 0 0 .8ex;border-left:1px #ccc solid;padding-left:1ex"><div dir="auto" class=""><div class="">Dear Chispin and stovers</div><div class=""><br class=""></div><div class=""><br class=""></div><div class="">Of course no mention of the quality of the pellets! In the U.S. The go through standard testing and results labeled</div><div class="">On bags. But pellets are made of all sorts of materials and energy values and volatile profiles. It would seem this would be part of the discussion. </div><div class="">Thanks</div><div class="">Frank<br class=""><br class="">Sent from my iPhone</div><div class=""><br class="">On Sep 3, 2015, at 6:13 AM, Crispin Pemberton-Pigott <<a href="mailto:crispinpigott@outlook.com" target="_blank" class="">crispinpigott@outlook.com</a>> wrote:<br class=""><br class=""></div><blockquote type="cite" class=""><div class=""><div class=""><p class="MsoNormal">Dear Friends<u class=""></u><u class=""></u></p><p class="MsoNormal"><u class=""></u> <u class=""></u></p><p class="MsoNormal">There is a broad move around the world to create pelleted fuel from biomass and burn it in tighter spaces. This report was noted in the Alliance for Green Heat newsletter:<u class=""></u><u class=""></u></p><p class="MsoNormal"><u class=""></u> <u class=""></u></p><p style="margin-right:0cm;margin-bottom:0cm;margin-left:22.5pt;margin-bottom:.0001pt" class=""><span style="font-size:9.0pt;font-family:"Verdana",sans-serif;color:blue" class=""><a href="http://r20.rs6.net/tn.jsp?f=001d7dcszljjgfEKYA31aaHyRsMRRejQSaDUDJHpy5B3lPW1W0QcteHERbDFukIhEc2-_1cKtvym49J_ai7zvt1WWN26UenG3N6joIskOVraQhcc__S5dpEwVlcw8pbpwWuwRufyvZSstnraBJTXAbr2wOPL-tX7Wypj3swduscC5I1Staun8b2olWMeGwuEsLEKsSA0qsYd2J1B5b7fDXOH7vLn_jPI3y12xty5nULquL9LCJu6LE7P-Ysu5qiL45LFwfyKNL4feu5XOzEawUh0a7X5VAZM8fb7F4K1l1kHGeFIFftvkxNTEEi9J_I05V6LKmiIZSk4GOQXJRAMRf5NDba52L-Wn_9jVkbpqju9Kifq8bMZm_xowV5Qn2NerYbUfu00_a4isbrvL9gktLkSQ==&c=WnPhxOQ3V-ic1ZJ3NBDpcipfRPq-UdIrBKPYwMfkxe-_CRS45fkQ4w==&ch=gnDbpciWOWhz6yV0o8Zdcoli15r_rpgR21xk0iBJKKi_KYRnwLVmTw==" target="_blank" class=""><b class="">Updated on the Mt. Vernon pellet stove recall</b></a><u class=""></u><u class=""></u></span></p><p style="margin-right:0cm;margin-bottom:0cm;margin-left:22.5pt;margin-bottom:.0001pt" class=""><span style="font-size:8.0pt;font-family:"Verdana",sans-serif;color:#4f604f" class="">Last month, we reported on the recall of 2,000 Mt. Vernon E2 pellet stoves after about 6 experienced explosions that shattered the glass in the front door. No injuries have been reported. The Alliance wrote to HHT asking for clarifications about what caused the malfunction and whether the stove would be 3rd party tested again for safety. </span><span style="font-size: 8pt; font-family: Verdana, sans-serif;" class=""><a href="http://r20.rs6.net/tn.jsp?f=001d7dcszljjgfEKYA31aaHyRsMRRejQSaDUDJHpy5B3lPW1W0QcteHEfKhE4oT8BuuAHDwJ1L0g7GrKo5I0xEbbDvkpCt65Xds638GUTKpc9WxdvAozGBIprVOl7vL1wQKB10dTQFUofpAQnr3z9i2zwxCfiQA3rCg4PVvKxSMWgMWDhYiC_fJ7rGJlBpUwsdpb9A-KCa9c_WZg3sRbG1GpSOEsBvotEVw3FLKELU68l1aktAt4KqIrr-AbESuj8iSP6u9wdRQU3L5aMshSI5ocFejIUjrSB94PP9Q2h_zrmWcq3brFPbj1VqWZSiFfmDp50WpCw2b2SOvJ-9NqzbOgn8sgdzIHO2tNWqczgkuFI6d7bzwPt4D_g==&c=WnPhxOQ3V-ic1ZJ3NBDpcipfRPq-UdIrBKPYwMfkxe-_CRS45fkQ4w==&ch=gnDbpciWOWhz6yV0o8Zdcoli15r_rpgR21xk0iBJKKi_KYRnwLVmTw==" target="_blank" class=""><b class=""><span style="color:#4f604f" class="">Click here</span></b></a></span><span style="font-size:8.0pt;font-family:"Verdana",sans-serif;color:#4f604f" class=""> for a copy of the HHT response.</span><span style="font-size: 8pt; font-family: Verdana, sans-serif;" class=""><u class=""></u><u class=""></u></span></p><p class="MsoNormal"><span style="font-size:8.0pt;font-family:"Verdana",sans-serif;color:#4f604f" class=""> <u class=""></u><u class=""></u></span></p><p class="MsoNormal">The drive to create better combustion often means having a staged gasification-then-burning type of design. That may be a source of problems.<u class=""></u><u class=""></u></p><p class="MsoNormal"><u class=""></u> <u class=""></u></p><p class="MsoNormal">I know of at least one instance of a very modern TLUD coal stove explosion in Ulaanbaatar when the operator refuelled it with a significant amount of lignite (high volatiles) while it was already very hot. This generated a huge amount of combustible gas while simultaneously extinguishing the gas flame. Eventually it heated up to the point that the gas ignited and it blew flaming fuel out of the top of the stove, around the room. A public education campaign tried to prevent exactly this sort of mis-operation.<u class=""></u><u class=""></u></p><p class="MsoNormal"><u class=""></u> <u class=""></u></p><p class="MsoNormal">Regards<u class=""></u><u class=""></u></p><p class="MsoNormal">Crispin<u class=""></u><u class=""></u></p><p class="MsoNormal"><u class=""></u> <u class=""></u></p></div></div></blockquote><blockquote type="cite" class=""><div class=""><span class="">_______________________________________________</span><br class=""><span class="">Stoves mailing list</span><br class=""><span class=""></span><br class=""><span class="">to Send a Message to the list, use the email address</span><br class=""><span class=""><a href="mailto:stoves@lists.bioenergylists.org" target="_blank" class="">stoves@lists.bioenergylists.org</a></span><br class=""><span class=""></span><br class=""><span class="">to UNSUBSCRIBE or Change your List Settings use the web page</span><br class=""><span class=""><a href="http://lists.bioenergylists.org/mailman/listinfo/stoves_lists.bioenergylists.org" target="_blank" class="">http://lists.bioenergylists.org/mailman/listinfo/stoves_lists.bioenergylists.org</a></span><br class=""><span class=""></span><br class=""><span class="">for more Biomass Cooking Stoves, News and Information see our web site:</span><br class=""><span class=""><a href="http://stoves.bioenergylists.org/" target="_blank" class="">http://stoves.bioenergylists.org/</a></span><br class=""><span class=""></span><br class=""></div></blockquote></div><br class="">_______________________________________________<br class="">
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<br class=""></blockquote></div><br class=""><br clear="all" class=""><div class=""><br class=""></div>-- <br class=""><div class="gmail_signature"><div dir="ltr" class=""><div class=""><div class="">Dean Still</div><div dir="ltr" class="">Executive Director<div class="">Aprovecho Research Center</div><div class="">PO Box 1175</div><div class="">76132 Blue Mountain School Road</div><div class="">Cottage Grove, OR 97424</div><div class="">(541) 767-0287</div></div></div></div></div>
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