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Dear Dean,<div><br></div><div>We have been testing a gasfier of approximal 10 Litre (made for corn cobs), using wood pellets of excellent quality, 4% moisture content.</div><div>It was burning like a "turbo charged" gasifier of a "standard" size, but lasted less or the same as a 6 Litre.</div><div>On the other hand it was keeping the 20 Litre of water boiling at full blast for a couple of hours.</div><div><br></div><div><span style="font-size: 10pt;">We did not notice any difference in terms of soot or black carbon, but the "high speed" mode, might give more gases during the gasification process.</span></div><div><br></div><div>We feel it is more a choice between efficiency (performence) and fuel efficient, like turning the "nob" on an electricstove from one to three.</div><div>At full blast you will normaly use more power or energy (electricity).</div><div><br></div><div><span style="font-size: 10pt;">We think the "secret" is the airflow and the possibillity to control it and have made progress to do so.</span></div><div><span style="font-size: 10pt;"><br></span></div><div><span style="font-size: 10pt;">We prefer to use fuel of low moisture content and adjust the design and airflow of the stove to fit the different types of biomass.</span></div><div><br></div><div>Regards </div><div><br></div><div>Otto<br><br><div><div id="SkyDrivePlaceholder"></div><hr id="stopSpelling">Date: Fri, 18 Jan 2013 17:52:05 -0800<br>From: deankstill@gmail.com<br>To: stoves@lists.bioenergylists.org<br>Subject: Re: [Stoves] Jatropha fruit as fuel?<br><br>Dear Otto,<div><br></div><div>I would think that especially with potentially dirty fuels (or any pellet using different components) gasifiers need to be engineered to burn cleanly and I agree that stoves need to be tested to determine emissions. Have you ever noticed that sometimes gasifiers do better with some moisture in the fuel? I find that really dry fuel can burn too quickly and make excess smoke and gas.</div>
<div><br></div><div>All Best,</div><div><br></div><div>Dean<br><br><div class="ecxgmail_quote">On Fri, Jan 18, 2013 at 2:23 PM, Otto Formo <span dir="ltr"><<a href="mailto:terra-matricula@hotmail.com">terra-matricula@hotmail.com</a>></span> wrote:<br>
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Dear stovers,<div><br></div><div>I would guess that "any" gasifier will burn jatropha seeds or pellets cleanly and efficient, as long as the moisture content are less than 10%.</div><div><br></div><div>We have in the pipeline to test a new design of natural draft gasifiers, using jatropha seeds and pellets, for emmissions and toxcic fumes.</div>
<div><br></div><div>We should be very carefull adviceing people using these types of fuel, before it has been carefully tested by independent institutions.</div><div><br></div><div>Have a nice weekend.</div><div><br></div>
<div>Otto (not the famous one..........:)<br><br><div><div></div><hr>From: <a href="mailto:crispinpigott@gmail.com">crispinpigott@gmail.com</a><br>To: <a href="mailto:stoves@lists.bioenergylists.org">stoves@lists.bioenergylists.org</a><br>
Date: Fri, 18 Jan 2013 10:19:11 -0500<br>Subject: Re: [Stoves] Jatropha fruit as fuel?<br><br><div><span style="font-size:11.0pt;font-family:"Calibri","sans-serif";color:#1f497d">Dear Jonathan</span><BR>
<span style="font-size:11.0pt;font-family:"Calibri","sans-serif";color:#1f497d"> </span><BR><span style="font-size:11.0pt;font-family:"Calibri","sans-serif";color:#1f497d">I am interested in the general layout and dimensions of a stove that will burn the seeds well. Are you sharing at this time anything regarding the design?</span><BR>
<span style="font-size:11.0pt;font-family:"Calibri","sans-serif";color:#1f497d"> </span><BR><span style="font-size:11.0pt;font-family:"Calibri","sans-serif";color:#1f497d">Thanks<br>
Crispin</span><BR><div><div style="border:none;border-top:solid #b5c4df 1.0pt;padding:3.0pt 0mm 0mm 0mm"><span style="font-size:11.0pt;font-family:"Calibri","sans-serif";color:#1f497d">++++++++</span><span lang="EN-US" style="font-size:10.0pt;font-family:"Tahoma","sans-serif""></span><BR>
</div></div> <BR><div><span style="font-size:10.0pt;font-family:"Tahoma","sans-serif"">Dear Joyce and stovers all,<br> <br>My regrets for not responding to this request 6 months ago. I admit that it got lost in my messy inbox which I have now reduced from 6000 messages to a mere 2400, and in the process uncovered Joyce's email.<br>
<br>Burning Jatropha seeds whole or in briquettes in open cooking arrangements is a bad idea. It produces a smoky, smelly fire and probably exposes cooks to toxic emissions. I even question burning Jatropha oil in lamps in enclosed areas for the same reason. Maybe others know of emissions studies.<br>
<span style="color:#1f497d">[snip]</span></span><BR></div></div><br>_______________________________________________
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