<html><head><meta http-equiv="Content-Type" content="text/html charset=us-ascii"></head><body style="word-wrap: break-word; -webkit-nbsp-mode: space; -webkit-line-break: after-white-space;" class="">So i wonder Frans if that is due to the size of the fuel being too large or the added resins from the type of biomass?<div class=""><br class=""></div><div class="">Thanks</div><div class=""><br class=""></div><div class="">Frank<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 6, 2015, at 5:05 PM, Frans Peeters <<a href="mailto:peetersfrans@telenet.be" class="">peetersfrans@telenet.be</a>> wrote:</div><br class="Apple-interchange-newline"><div class="">Dear Frank and all,<br class=""><br class=""> I got the PUF with pine biomas<br class="">But it ONLY happens if the fuel adding is too large !<br class="">REAL TLUD is badge and no adding on top but theoretical UNDER the FIRE .<br class="">So use 5 more NEW TLUDS and refill the cold again .<br class="">An automatic pellets stove drops ONLY 5 pelets a second! And never pufs .<br class="">No 5Kg at once !. so you get PUFS like a BULL STEAMING along its ears .<br class=""><br class=""> Frans<br class=""><br class=""><br class="">Dear Andrew<br class=""><br class="">Can we realistically run a pelleter at 280 C input and save energy? The<br class="">output is already charring the material. Perhaps that is torrefaction on the<br class="">fly, so to speak. If so, the MJ/kg should rise with processing. <br class=""><br class="">The pellets are have in Java are 8% moisture (Albasia). IF it gets really<br class="">hot and was bagged, it should be zero.<br class=""><br class="">Crispin<br class=""><br class=""><br class="">Frank on the large scale I doubt it is a problem because as you heat wood up<br class="">through 100C and drying and then on to the evolution of some VOCs to this<br class="">280 C torrefaction range you are always in an endothermic reaction, let it<br class="">slide above 330C and it becomes mildly exothermic, so with a bit of feed<br class="">back it should be possible to stay around280C with no thermal runaway. By<br class="">thistemperature presumably lignin is quite plastic so pelleting power should<br class="">be lower.I'm not sure what chemical changes are taking place but I'm<br class="">assuming some hydroxyl groups are being lost, making the material less able<br class="">to attract water i.e changing from hydrophilic to hydrophobic, so unlike<br class="">sawdust pellets torrefied pellets should store better without attracting<br class="">moisture and disintegrating. What are they like when dropped in a glass of<br class="">water for an hour or two?<br class=""><br class="">With large scale it will also be easy to incinerate the low cv offgas given<br class="">off bythe process.<br class=""><br class="">AJH<br class=""><br class=""><br class="">_______________________________________________<br class="">Stoves mailing list<br class=""><br class="">to Send a Message to the list, use the email address<br class=""><a href="mailto:stoves@lists.bioenergylists.org" class="">stoves@lists.bioenergylists.org</a><br class=""><br class="">to UNSUBSCRIBE or Change your List Settings use the web page<br class="">http://lists.bioenergylists.org/mailman/listinfo/stoves_lists.bioenergylists.org<br class=""><br class="">for more Biomass Cooking Stoves, News and Information see our web site:<br class="">http://stoves.bioenergylists.org/<br class=""><br class=""></div></blockquote></div><br class=""></div></body></html>