Methodology N2O Emissions from Stationary Sources

1990 N2O Emissions from Stationary Sources

Fuel Type

Higher Heating

Lower Heating

Emission Factor

Emissions

Value (10^12 Btu)

Value (10^12 Btu)

(lbs/10^6 Btu)

(MT)

(MTCE)

Coal

0.2

0.2

0.0032

0.3

23.3

Petroleum

43.0

40.9

0.0014

25.9

2192.8

Natural Gas

36.7

33.0

0.0002

3.0

253.3

Total

79.9

74.1

29.2

2469.4

1995 N2O Emissions from Stationary Sources

Fuel Type

Higher Heating

Lower Heating

Emission Factor

Emissions

Value (10^12 Btu)

Value (10^12 Btu)

(lbs/10^6 Btu)

(MT)

(MTCE)

Coal

0.0

0.0

0.0032

0.0

0.0

Petroleum

40.7

38.7

0.0014

24.5

2075.5

Natural Gas

71.3

64.2

0.0002

5.8

492.1

Total

112.0

102.8

30.4

2567.6

 

Column: Higher Heating Value, 1012 Btu

Source: Energy Information Administration, State Energy Data Report 1996, Table 251.

Column: Lower Heating Value, 1012 Btu

Source: Calculation. Higher Heating Value x 0.95, 0.95, and 0.90 for Coal, Petroleum and Natural Gas, respectively, based on value provided in Workbook chapter 14.

Notes: Lower heating value excludes the heat of condensation of moisture in the fuel during combustion.

Column: Emission Factor, lbs/106 Btu

Source: Workbook Table 14.4-2

Column: Emissions, MT

Source: Calculation. Lower Heating Value x Emission Factor x 106/2205

Notes: Factor of 106 converts emission factor to lbs per 1012 Btu. Dividing by 2205 converts from pounds to metric tons.

Column: Emissions, MTCE

Source: Calculation. Emissions, MT x 310 (GWP of N2O) x 12/44

Notes: Factor of 12/44 converts from metric tons of CO2 equivalent to metric tons of carbon equivalent.