> Is it safe to use a domestic central heating pump for biod mixing? > Thanks > Ian .................
Ian, "A central heating pump" sounds somewhat generic as a description. Agitation is the preferred method of mixing, even up to large 1,000 gallon batches. Normally at this level there is partial pump assist to get thorough mixing. There remains the concern of flammability of alcohol vapors and the construction of the pump. You will also need to take into consideration the viscosity of the original oil and final products and byproducts. Biodiesel is not that much less dense than vegetable oil. A submersible solvent pump used in an automotive parts cleaning stand would probably be adequate for biodiesel. You will want something that pumps 500 gph to overcome the viscosity and time concerns. The pump will draw some amps, so you should probably just stick with physical agitation. But it is darned handy for moving fluids on a small 100 gallon scale during washing and separation phases. Todd Appal Energy [EMAIL PROTECTED] Biofuel at Journey to Forever: http://journeytoforever.org/biofuel.html To unsubscribe, send an email to: [EMAIL PROTECTED] Your use of Yahoo! Groups is subject to http://docs.yahoo.com/info/terms/
