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Denmark's National Inventory Report 2005 - Submitted under the ...

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Table 3.8 CH 4 emission from stationary combustion plants 2003 1)<br />

<br />

60<br />

2003<br />

1A1a Public electricity and heat production 15647 Mg<br />

1A1b Petroleum refining 2 Mg<br />

1A1c O<strong>the</strong>r energy industries 58 Mg<br />

1A2 Industry 1485 Mg<br />

1A4a Commercial / Institutional 961 Mg<br />

1A4b Residential 4562 Mg<br />

1A4c Agriculture / Forestry / Fisheries 2094 Mg<br />

Total 24809 Mg<br />

1) Only emission from stationary combustion plants in <strong>the</strong> sectors is included<br />

1A4a<br />

Commercial /<br />

Institutional<br />

4%<br />

1A2 Industry<br />

6%<br />

1A1c O<strong>the</strong>r<br />

energy industries<br />

0%<br />

1A4b<br />

Residential<br />

18%<br />

1A1b Petroleum<br />

refining<br />

0%<br />

1A4c Agriculture<br />

/ Forestry /<br />

Fisheries<br />

8%<br />

1A1a Public<br />

electricity and<br />

heat production<br />

64%<br />

Figure 3.9 CH 4 emission sources, stationary combustion plants, 2003<br />

The CH 4 emission factor for reciprocating lean-burn gas engines is much higher than for o<strong>the</strong>r<br />

combustion plants due to <strong>the</strong> continuous ignition/burn-out of <strong>the</strong> gas. Lean-burn gas engines have<br />

an especially high emission factor as discussed in Chapter 3.2.2.4. A considerable number of leanburn<br />

gas engines are in operation in Denmark and <strong>the</strong>se plants account for 75% of <strong>the</strong> CH 4 emission<br />

from stationary combustion plants (Figure 3.10). The engines are installed in CHP plants and<br />

<strong>the</strong> fuel used is ei<strong>the</strong>r natural gas or biogas.<br />

O<strong>the</strong>r<br />

stationary<br />

combustion<br />

plants<br />

25%<br />

Gas<br />

engines<br />

75%<br />

Figure 3.10 Gas engine CH 4 emission share, 2003.

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