View Single Post
Old 11-27-2008, 06:30 PM   #22 (permalink)
Master EcoModder
Join Date: Mar 2008
Location: Edmonton, AB, Canada
Posts: 531
Thanks: 11
Thanked 12 Times in 11 Posts
Your well to tank numbers... WTF? If it took then energy of 5 barrels of crude to make 1 barrel of gasoline there wouldn’t be so many people pissed off about corn ethanol. I have come across 80% for gasoline and 84% for diesel on more than one occasion. A good source are ethanol to gasoline energy analysis. (Slide 4)

Increase in fuel used to fight emissions. This is a hard number to pin down so I will be generous and say it’s a 25% increase for the purpose of your argument.

Now the math:
1.25 x (1/0.8) = 1.5625 increase in emissions due to extra fuel required.
1/1.5625 = 0.64, 1-0.64 = 36% reduction in emissions to break even. 36% is not hard to do on any type of emission except CO2 which is not a pollutant but a green house gas and cannot be reduced with emission control equipment.
  Reply With Quote