Report - DCE - Nationalt Center for Miljø og Energi

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gramme (Nielsen et al. 2010) and all other emission factors refer to the
EMEP/EEA Guidebook (EEA 2009). Time series have not been estimated.
*NQMJFE FNJTTJPO GBDUPST
A considerable part of the emission data for waste incineration plants and
large power plants are plant-specific. Thus, the area source emission factors
do not necessarily represent average values for these plant categories. To attain
a set of emission factors that expresses the average emission for power
plants combusting coal and for waste incineration plants, implied emission
factors have been calculated for these two plant categories. The implied
emission factors are presented in Annex 2A-5. The implied emission factors
are calculated as total emission divided by total fuel consumption.
6ODFSUBJOUZ
According to the Good Practice Guidance for LRTAP Emission Inventories
(Pulles & Aardenne, 2004) uncertainty estimates should be predicted.
Uncertainty estimates include uncertainty with regard to the total emission
inventory as well as uncertainty with regard to trends.
FUIPEPMPHZ
The Danish uncertainty estimates are based on the simple Tier 1 approach.
The uncertainty estimates are based on emission data for the base year and
year 2010 as well as on uncertainties for fuel consumption and emission factors
for each of the main SNAP source categories. For particulate matter,
2000 is considered to be the base year, but for all other pollutants, the base
year is 1990. The applied uncertainties for activity rates and emission factors
are default values referring to Pulles & Aardenne (2004). The uncertainty for
PM is, however, estimated by DCE. The default uncertainties for emission
factors are given in letter codes representing an uncertainty range. It has
been assumed that the uncertainties were in the lower end of the range for
all sources and pollutants. The applied uncertainties for emission factors are
listed in Table 3.18. The uncertainty for fuel consumption in stationary combustion
plants is assumed to be 2 %.
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3FTVMUT
The uncertainty estimates for stationary combustion emission inventories
are shown in Table 3.19. Detailed calculation sheets are provided in Annex
2A-7.
The total emission uncertainty is 7.6 % for SO2, 17 % for NOx, 43 % for
NMVOC and 45 % for CO. For PM, heavy metals (except Se), HCB, dioxin
and PAH the uncertainty estimates are larger than 100 %.