Okay, folks, I found the table. To calculate greenhouse gases per mile, divide the number in the table by the mpg of the vehicle.
Example:
Gasoline car getting 50 mpg---
.... 11,800 / 50 = 236 gm CO2 per mile
Let's do an EV getting 250 wh /mile, or 4 miles per kWh---
.... 777 / 4 = 194 gm CO2 per mile
See note at bottom of the table about CO2 from electricity.
Ernie Rogers
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TABLE OF GHG PER FUEL UNIT
Gasoline...........11,800 gm CO2e /gallon gasoline
….Energy content: 116,090 BTU /gallon, or 34 kWh per gallon
Diesel #2..........12,700 gm CO2e /gallon diesel
....Energy equivalent: .0.90 gal = 1gal gasoline
Corn ethanol.......6,135 gm CO2e /gallon ethanol (from Wang)
....Energy equivalent: 1.52 gal = 1 gal gasoline
Electricity.............777 gm CO2e /kWh (U.S. power plant mix)
...or..................26,400 gm CO2e /gallon gasoline equivalent
....Energy equivalent: 34 kWh = 1 gal gasoline
Compressed NG...111.1 gm CO2e /SCF
....Energy equivalent: 118 SCF = 1 gal gasoline
H2 gas................34.2 gm CO2e /SCF
....Energy equivalent: 400 SCF = 1 gal gasoline
Biodiesel...........5940 gm CO2e /gallon biodiesel
....Energy equivalent: 1 gal = 1 gallon gasoline
CO2e refers to equivalent CO2 effect of all greenhouse gases combined, "Well-To-Wheels." All of these numbers come from Wang. The numbers for electricity assume that the electricity is from an "average" United States power grid.
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Quote:
Originally Posted by Ernie Rogers
Argonne national lab (Wang and others, the GREET model) has published the conversion from units of fuel to grams of CO2, including all of the steps like refining and mining. With those factors all you have to do is multiply--
(fuel units /mile) x (gms CO2 /fuel unit) = gms CO2 / mile
And, the tables include gms CO2 /kWh under various assumptions.
The tables are available on line, and I have a table on my computer here somewhere. I will have to send it later when I get back. (Have to get to work now.)
Ernie Rogers
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