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Real Automobile

Emissions

 

 

 

Emission don't just come

from burning fuels but

also from how the fuel

 is produced.
  

  Carbon / Mile Calculation:

 

    

 

     

Lbs Carbon

 / Mile

  
  Gasoline:   .6    18 lbs carbon / gal / 30 mpg
  Hybrid:  .36    18 lbs / gal / 50 mpg
  Electric

 .276

.359

   60 kwh battery pack / 320 miles / .1875 miles per kwh

   1.03 lbs of coal produce 1 kwh electricity  (2.86 / 2 = 1.43)

   1.43 lbs x 1.03 x .1875

   (add inefficiency of 30%)
  Hydrogen:

1.4

1.8

   21 kwh makes 1 gal hydrogen which goes 25 miles   

   Coal makes 1.65 lbs Co2 per kwh

   21 kwh x 1.65 lbs Co2 = 34.65 lbs Co2 goes 25 miles

   (add inefficiency of 30%)
     

 

  Notes:

        2000 lbs (1 ton) coal makes 2.86 tons (5,720 lbs) CO2

        50 kwh to make 9 kg of hydrogen / 1 gal = 3.79 kg / 21 kwh makes 1 gal hydrogen

 

        Grams of CO2 per kwh by generations method:  (454 lbs per pound)

  Grams per Kwh Lbs per Kwh
Coal: 900 1.65 lbs
Nat gas: 465 1.02 lbs
Oil: 820

1.80 lbs

  • Natural Gas:  It takes 0.01003 Mcf (1,000 cubic feet) to make 1 kWh.  This includes power plant inefficiency.

  • Oil (residential fuel):  It takes 0.0016 barrels to make 1 kWh.  This includes the inefficiency of the conversion process.