Regarding starting motors in our off-grid woodshop: we treat 1 horsepower motors as intermittent-use, starting and stopping them at will. Larger motors are paired with a 1 horsepower motor to start each machine. After it is up to speed, the main motor is turned on. This system reduces the start-loading of the large motors almost down to full load amp rating, and its elapsed time to less than a second, since the rotor is already spinning.
If he has an inverter / battery system, the battery bank will charge variably as (headroom) power is available, reducing the light-load wet stacking potential in the system. I await the SVO discussion with great interest. Tom Thiel On 6 Jan, 2008, at 8:52 PM, Zeke Yewdall wrote: > Seems to me like an engine running an 8 hour shift would be ideal for > SVO -- you'd have to start it on biodiesel till it got up to operating > temperature, then just make sure the incoming SVO is as hot as you can > get it -- 180F or higher. The schemes to just thin SVO with biodiesel > and ethanol seem pretty risky. > > One thing to think about is wet stacking the generator depending on > the loading of the shop -- many diesel generators cannot be run at > less than 20% of full load, and if the generator is sized for starting > large motors, it may not operate at this level consistently. > > Z > > On Jan 6, 2008 6:01 PM, Thomas Kelly <[EMAIL PROTECTED]> wrote: >> Hello All, >> On 9/25/06 Pagandai Pannirselvan wrote: >>> The small co generation of electrical energy based on the bio diesel >>> can >make possible the use of pure used vegetable oil and also >>> some e 5 >porcent hydrated ethanol , making possible to lower the >>> viscosity of used >vegetable oil in deiesel engine, removing >>> dependence with >Conventional deisel. >>> Thus the blend of used vegetable oil 70 percent, hyrated ethanol 10 >>> >percent and biodeisel 20 porcent can be used with less problem >>> for >motor maintainence in rural areas. >> >> I've recently been contacted by a former student who would like >> to generate his own electricity for his woodworking business. He is >> considering a diesel generator and asked about biodiesel. I suggested >> he look into using a BD/WVO blend rather than processing it all into >> BD, as he would be using about 3 gallons (11.4 L) per hour (120+ >> gal/week). >> 1. Does anyone have experience using a blend such as that >> suggested by Pagandai Pannirselvan in a diesel generator? >> >> 2. Hydrated ethanol: What % water would be tolerated? >> In the U.S. it is possible to get a permit to distill ethanol. >> Only that which leaves the premises must be denatured to prevent >> human consumption. 85-90% ethanol is do-able, and used on premises >> would not have to be denatured >> >> 3. Could E-85 be substituted for the hydrated ethanol? >> I've heard of commercial suppliers adding small amounts of gasoline >> to their diesel. Since the E-85 would only constitute 10% of the mix, >> the total gasoline would only be .15 X .10 = .0150 (1.5%) >> >> Thanks, >> Tom >> -------------- next part -------------- >> An HTML attachment was scrubbed... >> URL: /pipermail/attachments/20080106/e76c540e/attachment.html >> _______________________________________________ >> 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/ > _______________________________________________ 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/
