Report - DCE - Nationalt Center for Miljø og Energi

accounting for 94 % of the PM2.5 emission from stationary combustion
plants.
The primary sources of PM emissions are:
• Residential boilers, stoves and fireplaces combusting wood
• Farmhouse boilers combusting straw
• Power plants primarily combusting coal
• Coal and residual oil combusted in industrial boilers and processes
The PM emission from wood combusted in residential plants is the predominant
source. Thus, 90 % of the PM2.5 emission from stationary combustion
is emitted from residential wood combustion. This corresponds to 68 %
of the national emission. A literature review (Nielsen et al., 2003) and a Nordic
Project (Sternhufvud et al., 2004) have demonstrated that the emission
factor uncertainty for residential combustion of wood in stoves and boilers is
notably high.
Figure 3.16 shows the fuel consumption and the PM2.5 emission of residential
plants. Wood combustion accounts for 97 % of the PM2.5 emission from
residential plants in spite of a wood consumption share of 42 %.
Emission inventories for PM have only been reported for the years 2000-
2010. Time series for PM emission from stationary combustion are shown in
Figure 3.17. The emission of TSP, PM10 and PM2.5 has increased 44 %, 46 %
and 50 %, respectively, since year 2000. The increase is caused by the increased
wood combustion in residential plants. However, the PM emission
factors have decreased for this emission source category due to installation
of modern stoves and boilers. The decreased wood consumption in residential
plants in 2007-2009 and the increase in 2010 has resulted in a decrease of
PM emission from stationary combustion in 2007-2009 and in an increase in
2010.
The time series for PM emission from stationary combustion plants follows
the time series for PM emission from residential plants.
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