Thanks Jim, that is very helpful and I'll be sure to monitor my temps closely as I blend. I thought maybe there was a chance that it would hold the same temp for that reason, but would never have guessed a temp increase.
James Pfeiffer wrote: > Hey Mike. I'm a novice too but, for what it's worth, in my first 10 test > batches in a blender I have gotten a pretty substantial temperature increase > during mixing - between 10F and 20F increase depending on how long I mixed > the batch (from 25 to 45 minutes) and whether it was my first, 2nd or 3rd > batch of the evening (basically "preheating" the blender). In my first couple > of batches I tried to insulate the blender with a towel because I was worried > that the mixture would cool during blending. After I saw such significant > temperature gains, I took off the towel. I believe that the temperature > increase is due to friction of the blades - I don't know if it is an > exothermic reaction. > > As I write this email, I'm running another test batch. the oil was heated to > 148F before putting it into a cold blender. When I started processing, the > mixture was 122F and 42 minutes later it is at 145F. I'm processing 40 > minutes instead of the 20 to 30 minutes recommended on Journey-to-forever > just because I'm trying to ensure a complete reaction. > > Hope that's useful. > > Jim > _______________________________________________ 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/
