I posted it a while ago, but it bears repeating, it's a good study. It caught my interest since it suggests the idea of using 9% ethanol blended with vegoil to reduce the needed temp. for use in DI engine from their finding of 150¼C down to 80¼C, and also garnered a *further* particulate emissions reduction over and above that found for rapeseed oil vs. diesel alone, which was already a signficant reduction on its own.
That gets things into the temp. range that is doable with glycol heat exchanger (we are adding two types of those to our offerings soon) and/or electric heating such as accomplished with the VEG-Therm. (BTW, we are putting together another production run soon on those again next week, so if anyone is contemplating ordering, let me know so we can have enough around - last run we ran ran into a backorder situation on a couple of the components and it made for a bit of a delay in getting them out quickly to everyone that ordered last month). Edward Beggs www.biofuels.ca > From: [EMAIL PROTECTED] > Reply-To: biofuel@yahoogroups.com > Date: Sun, 06 Jan 2002 20:26:11 -0500 (EST) > To: biofuel@yahoogroups.com > Subject: [biofuel] Vegetable oils substitute for diesel fuel > > I found this web page and cited a portion of it below. Maybe everybody but > me already knew this but I found it intereting. > > Neal Van Milligen > ------------------------------------------------------------------------------ > > ------------------------------------------ > http://www.nf-2000.org/secure/Fair/F484.htm > > Experiments were carried out in order to compare the atomisation quality of > rapeseed oil and rapeseed oil/alcohol with that of a conventional fossil fuel > such as diesel oil and to compare performances in terms of soot formation and > burnout along the flames for all fuels. First of all the stability of the > rapeseed oil with the temperature was checked by thermogravimetry analysis > and it comes out that this oil is very stable up to 300¡C in inert conditions > and up to 200¡C under an oxidative atmosphere. Due to this stability with the > temperature it is possible to preheat the oil up to 150¡C where it attains > the same viscosity as the diesel oil. Atomisation tests showed that at 150¡C > the performance of the rapeseed oil are comparable with that of the diesel > oil. > > The overall combustion performance of the rapeseed oil are very satisfactory > in comparison with the diesel fuel while the rapeseed oil produces almost 40 > % less soot than diesel fuel. The different volatility of this fuel respect > to the diesel fuel is responsible of the different behaviour of the sampled > gas concentrations in the base of the flames while at the end of the flames, > both attain almost the same values. It has been established that an addition > of 9 % of ethyl alcohol (95 %) bring a great benefit regarding the > pre-heating oil temperature. In fact, the presence of alcohol allows a > reduction in the inlet oil temperature from 150 ¡C to 80 ¡C. Moreover, the > combustion of the emulsion produces less soot and, at the exhaust, the amount > is almost one half less than that produced by the combustion of rapeseed oil. > It should be interesting to investigate more carefully the morphology of the > rapeseed oil soot because of its higher reactivity toward oxidation shown by > using TG analysis that can be correlated to higher hydrogen content. > > Generally all measured operating characteristics power, torque, fuel > consumption and efficiency prove, that when using these novel fuels there are > only slight power and consumption disadvantages in comparison to Diesel fuel. > Only with coconut and palm kernel oil methylester were the operating > characteristics definitely worse, while soybean oil methylester is placed > between the two groups. > > > Biofuel at Journey to Forever: > http://journeytoforever.org/biofuel.html > Please do NOT send "unsubscribe" messages to the list address. > To unsubscribe, send an email to: > [EMAIL PROTECTED] > > Your use of Yahoo! Groups is subject to http://docs.yahoo.com/info/terms/ > > Biofuel at Journey to Forever: http://journeytoforever.org/biofuel.html Please do NOT send "unsubscribe" messages to the list address. To unsubscribe, send an email to: [EMAIL PROTECTED] Your use of Yahoo! Groups is subject to http://docs.yahoo.com/info/terms/
