It is not recommendable with water together with SVO, WVO or BD for that matter. The oils consist from esters which are sensible to hydrolysis. This means that parts of the oil will crack by the influence of water. A water content too high will cause: 1) Severe filter clogging problems since many of the compounds formed by the hydrolysis are in solid shape, not liquid. 2) Corrosion in the fuel system, since many of the hydrolysis products are bound to be sour. Jan Warnqvist AGERATEC AB
[EMAIL PROTECTED] + 46 554 201 89 +46 70 499 38 45 ----- Original Message ----- From: "R Del Bueno" <[EMAIL PROTECTED]> To: <[EMAIL PROTECTED]> Sent: Wednesday, March 09, 2005 3:16 PM Subject: Re: [Biofuel] Re: Drying WVO - Is there a simple way? > This is a good question. > > I have found that gravity will take most of the free water out in time. > Warming the oil to about 140degF speeds up the process. The use of a > centrifuge speeds it up even further (but can be costly unless you stumble > into a good deal on one). > > I know some folks are using some vacuum setups to lower the boiling point, > and using flash evaporators and or thin film evaporators, but I wonder if > it is needed. > > (As a side question...how much more efficient is a vacuum assisted > evaporator from a total energy usage standpoint, than just heat, after all > one must use energy to create the vacuum?) > > There still seems to be some debate over how dry the oil needs to be. > > For WVO/SVO fuel systems, I am not positive that small quantities of water > are all that problematic...after all there are water injection systems out > there, and a few companies that sell diesel /water emulsifiers in order to > suspend water into diesel fuel as a method of altering combustion > temperature to reduce NOX emissions. So from a combustion standpoint..seems > that small amounts of water will simply turn to steam. > > Free water over time can collect in the fuel system and cause freeze > issues, and corrode internal components of injection systems...but if you > are running a dual tank WVO system, switching back to diesel prior to > shutdown, there should not be water sitting in the injection system. > > Does a small amount of water affect the lubricity value of the > WVO?..perhaps..but with the initial lubricity of WVO being so high, I > suspect there is a bit of room to play. > > So far I have been running 10 micron filtered gravity settled oil (about a > week at around 70degF) with a heated waterblock type filter in vehicle. > Very little, if any water collects in the clear bowl. I have yet to run > into any problems that indicate water problems...but only topping out at > around 10k miles..so nothing definitive. > > I understand the need to dry WVO for biodiesel production, but wonder how > needed it is for straight WVO as fuel. > > -Rob > > At 08:30 PM 3/8/2005, you wrote: > > > > > > >Hello to all: > >I'm wondering if anyone is using WVO and drying it before use. I filter > >it and it looks brite and clear but I worry that there may be water disolved > >in the oil. Is there a simple test for water content? Is there a simple > >method of removing moisture? I don't want to heat 50 gallons to 150C. > >Searching.........._______________________________________________ > >Biofuel mailing list > >[EMAIL PROTECTED] > >http://wwia.org/mailman/listinfo.cgi/biofuel > > > >Biofuel at Journey to Forever: > >http://journeytoforever.org/biofuel.html > > > >Biofuel archives at Infoarchive.net (searchable): > >http://infoarchive.net/sgroup/biofuel/ > > _______________________________________________ > Biofuel mailing list > [EMAIL PROTECTED] > http://wwia.org/mailman/listinfo.cgi/biofuel > > Biofuel at Journey to Forever: > http://journeytoforever.org/biofuel.html > > Biofuel archives at Infoarchive.net (searchable): > http://infoarchive.net/sgroup/biofuel/ > _______________________________________________ Biofuel mailing list [EMAIL PROTECTED] http://wwia.org/mailman/listinfo.cgi/biofuel Biofuel at Journey to Forever: http://journeytoforever.org/biofuel.html Biofuel archives at Infoarchive.net (searchable): http://infoarchive.net/sgroup/biofuel/
