Hello Bruno et al. The viscosity and the high boiling point of SVO are just a consequence of the main molecule of SVO and its composition. The SVO consists from triglycerides together with some content of free acidity. Since we are mainly dealing with plant oils (or similar) we can expect the dominating fatty acid content to consist from oleic or linoic acid. These are C18:s which means that the triglyceride will have an approximate sum formula of C57H115O6 . This is a large molecule, which in itself is a reason for its combustion properties. Furthermore, the fatty acids are tied to a "backbone" of glycerine. This component can be extremely difficult to burn, since its urge to create polymeric compounds rather than vaporize is well known to anybody who have tried burning it. This property increases with the unsaturation of the oil. There are reports suggesting that highly saturated oils and fats are more easy to combust in diesel engines. So the sum is that biodiesel is more suitable than SVO. The additive we successfully tried was manufactured by Sybron Chemicals (SA) and consisted from phenolic compounds, which created soot which "diluted" the deposits.
Jan Warnqvist ----- Original Message ----- From: "Bruno M." <[EMAIL PROTECTED]> To: <sustainablelorgbiofuel@sustainablelists.org> Sent: Tuesday, November 20, 2007 9:01 PM Subject: Re: [Biofuel] BD disinfo from SVO kit vendors Jan, SVO having a high boiling point doesn't mean it can't be used instead of dinodiesel in a diesel car, because, ... normal Diesel fuel is also completely evaporated before combustion. What you need is a fine mist, not evaporated fuel in a diesel motor. Dino diesel has a boiling point, rather a boiling-range, between 340 and 400°C, so even dino juice will not be much vaporized at the time of ignition. But it's possible that the higher the viscosity, boiling point, and vapor pressure is, the more difficult it is for your dieselcar's hardware to make the ultimate mist who gives the ideal burning of all fuel components. Thats why SVO conversion kits alway's have a fuel heather device in it to lower the viscosity so the pump - injector combo can produce a optimal ( or as close as possible ) mist. At 95°C sunflower oil has around the same viscosity then DD at 15°C. DOE and other governmental organizations still claim that SVO will shorten the live span of your motor and more cooking and reduced motoroil live span will appear. Mixing with dinojuice or an additive can also help but is not the best or preferred option if you want to go fossil free. What additive did you use or tested? Grts Bruno M. ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~ At 18:30 20/11/2007, Jan wrote: >Hi all, >I find it difficult to embrace any SVO technology. That is for many >reasons, >but the most outstanding is the high boiling point of SVO:s. Canola >vaporizes completely at no less than 650-700oC, which is far too high for >modern diesel engines which have a limit of acceptance at approx 350oC. >This >means that the SVO cannot combust completely in a diesel engine. This leads >to deposits in the engine, some of them lethal to the engine, and >lubricating oil contamination. This is a fact that no SVO kit can cure. I >was into a SVO project during the 90:s and we found one additive that could >keep the deposits at a certain level. But the composition of the additive >was such, that the handling of the fuel became environmentally undesirable, >also from the human health point of view. >If somebody has an attractive technical/chemical solution for this I would >be very interested to hear about it. > >Jan Warnqvist >----- Original Message ----- >From: <[EMAIL PROTECTED]> >Sent: Tuesday, November 20, 2007 5:42 PM >Subject: [Biofuel] BD disinfo from SVO kit vendors > >See: >The SVO vs biodiesel argument: >http://journeytoforever.org/biodiesel_svovsbd.html ========================================================= -- No virus found in this outgoing message. Checked by AVG Free Edition. Version: 7.5.503 / Virus Database: 269.16.1/1141 - Release Date: 20/11/2007 11:34 _______________________________________________ Biofuel mailing list Biofuel@sustainablelists.org http://sustainablelists.org/mailman/listinfo/sustainablelorgbiofuel Biofuel at Journey to Forever: http://journeytoforever.org/biofuel.html Search the combined Biofuel and Biofuels-biz list archives (70,000 messages): http://www.mail-archive.com/biofuel@sustainablelists.org/ _______________________________________________ Biofuel mailing list Biofuel@sustainablelists.org http://sustainablelists.org/mailman/listinfo/sustainablelorgbiofuel Biofuel at Journey to Forever: http://journeytoforever.org/biofuel.html Search the combined Biofuel and Biofuels-biz list archives (70,000 messages): http://www.mail-archive.com/biofuel@sustainablelists.org/
