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</o:shapelayout></xml><![endif]--></head><body lang=EN-CA link=blue vlink=purple><div class=WordSection1><p class=MsoNormal><span style='font-size:11.0pt;font-family:"Calibri","sans-serif";color:#1F497D'>Dear Roger<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'>The glycerine-as-fuel is interesting. There is a lot of glycerine produced in the oil pumping business – it sticks to the inside of the pipes. What happen to it these days? Vaseline was developed to get rid of it at a profit!<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'>If it is cheap (might not be) it can be ‘canned’ like ethanol gel. Ethanol does not have a very high heat content (hence the poor mileage cars currently get compared with real gasoline). Watered-down ethanol is pretty crummy. James Robinson at the SeTAR Centre has seem some at 18 MJ/Litre or even less. Prof Philip Lloyd was running a stove on a fuel that had so much water in it, it was condensing on the underside of the pot and dripped so much it extinguished the fire!! Ha ha!<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'>So what is the heat content of glycerine? How much does it cost? Where does it come from? Is there much available? What is the melting temperature? <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'>Philip: what is the vapour pressure and so on? Have you ever tried burning it? [Philip reads this list.]<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'>Most alcohol burning stoves are terrible – that is my biased assessment. They are usually choked to death near the evaporation zone and have very short flame spaces, followed by too much air supply, yielding a smelly burn – smelling like partly burned gel compound. We test quite a number of them. There is a belief that if the fuel is ethanol, the emissions are inherently low, which is not true. The emissions are <i>potentially</i> low because the fuel is usually pretty good, but emissions are produced by the stove+fuel combination. If the burner is poorly constructed, it’s gonna smell.<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'>You know those little pots of flame under the vegetables at the restaurant buffet? Terrible combustion efficiency. Lotsa CO.<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'>Regards<o:p></o:p></span></p><p class=MsoNormal><span style='font-size:11.0pt;font-family:"Calibri","sans-serif";color:#1F497D'>Crispin<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'><o:p> </o:p></span></p><div><div style='border:none;border-top:solid #B5C4DF 1.0pt;padding:3.0pt 0mm 0mm 0mm'><p class=MsoNormal><b><span lang=EN-US style='font-size:10.0pt;font-family:"Tahoma","sans-serif"'>From:</span></b><span lang=EN-US style='font-size:10.0pt;font-family:"Tahoma","sans-serif"'> stoves-bounces@lists.bioenergylists.org [mailto:stoves-bounces@lists.bioenergylists.org] <b>On Behalf Of </b>Fireside Hearth<br><b>Sent:</b> 08 August 2011 00:20<br><b>To:</b> stoves@lists.bioenergylists.org<br><b>Subject:</b> Re: [Stoves] Jatropha and its future<o:p></o:p></span></p></div></div><p class=MsoNormal><o:p> </o:p></p><div><p class=MsoNormal style='margin-bottom:12.0pt'><span style='font-size:10.0pt;font-family:"Tahoma","sans-serif"'> Thank you Crispin....<br><br> These are all great ideas! Do you have any gut level sense of what downsides there could be with regard to emission? would I find these to be "fairly clean" fuel options? The glycerine did produce a scent/smoke free burn once temperatures got high enough, however getting there was both smelly and irritating. My delivery system I believe will need to advance to (possibly) a fuel injector, unless something less complicated (oil drip) can be thought up with any reliability. I actually started this project as a pellet stove with a simple 12 volt auger and timing block system. I could go back to that to push grains, seeds, or pitts....even dung! The electrical demand would be covered by solar, and at some time I wish to experiment further with thermocoupling the stove for a truly off grid, self powered pellet stove. I am saving these posts which get me thinking so once my current project is underway I can revisit them. With the level of expertise represented here many things are exciting possibilities......this is one e-mail I will save for the near future and look for more information on as I develop new ideas. Thank you very much.<br>Roger <o:p></o:p></span></p></div></div></body></html>