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Table A2-3:

N2O emission factors used in the energy sector category

  Emission factor
t N2O/PJ
Source

Natural gas

Electricity generation

0.09

IPCC Tier 1 (table 1–8) natural gas – all uses

Commercial

2.07

IPCC Tier 2 (table 1–19) natural gas boilers

Residential

0.09

IPCC Tier 1 (table 1–8) natural gas – all uses

Domestic transport (CNG)

0.09

IPCC Tier 1 (table 1–8) natural gas – all uses

Other stationary (mainly industrial)

0.09

IPCC Tier 1 (table 1–8) natural gas – all uses

Liquid fuels

Stationary Sources

   

Electricity – residual oil

0.285

IPCC Tier 2 (table 1–15) residual oil boilers – normal firing

Electricity – distillate oil

0.38

IPCC Tier 2 (table 1–15) distillate oil boilers – normal firing

Industrial (including refining) – residual oil

0.285

IPCC Tier 2 (table 1–16) residual oil boilers

Industrial – distillate oil

0.38

IPCC Tier 2 (table 1–16) distillate oil boilers

Commercial – residual oil

0.285

IPCC Tier 2 (table 1–19) residual oil boilers

Commercial – distillate oil

0.38

IPCC Tier 2 (table 1–19) distillate oil boilers

Residential (all oil)

0.19

IPCC Tier 2 (table 1–18) furnaces

LPG (all uses)

0.57

IPCC Tier 1 (table 1–8) oil – all sources except aviation

Agriculture – stationary

28.5

IPCC Tier 2 (table 1–49) diesel engines – agriculture

Mobile sources

   

LPG

0.57

IPCC Tier 1 (table 1–8) oil – all sources except aviation

Petrol

1.425

IPCC Tier 2 (table 2.7 in GPG (IPCC, 2000))

US gasoline vehicles (uncontrolled)

Diesel

3.705

IPCC Tier 2 (table 2.7 in GPG (IPCC, 2000))

all US diesel vehicles

Fuel oil (ships)

1.9

IPCC Tier 2 (table 1–48) ocean going ships

Aviation fuel/kerosene

1.9

IPCC Tier 1 (table 1–8) oil – aviation

Coal

Electricity generation

1.52

IPCC Tier 2 (table 1–15) pulverised bituminous combustion – dry bottom, wall fired

Cement

1.33

IPCC Tier 1 (table 1–8) coal – all uses

Lime

1.33

IPCC Tier 1 (table 1–8) coal – all uses

Industry

1.52

IPCC Tier 2 (table 1–16) dry bottom, wall fired coal boilers

Commercial

1.33

IPCC Tier 1 (table 1–8) coal – all uses

Residential

1.33

IPCC Tier 1 (table 1–8) coal – all uses

Biomass 

Wood (all uses)

3.8

IPCC Tier 1 (table 1–8) wood/wood waste – all uses

Biogas

2.07

IPCC Tier 2 (table 1–19) natural gas boilers