                
Table 2.1
Calculation preconditions for assessment of uncertainties *1)
Data type
Assumed distribution
of uncertainty
Assumed statistical distributional function
Data
quantity
%
Assumed
uncertainty
%
Quantity data
65
22
10
3
±5
±25
±50
±100
Lognormal with standard deviation of 25%
Correction factor
80
15
5
±5
±20
±50
Lognormal with standard deviation of 20%
Contents of
material
100
±5
Lognormal with standard deviation of 5% (absolute). Sum
of contents of all materials in commodity group fixed at 100
Loss of resources of
materials
75
15
10
0
±20
±100
An uncertainty of 0% was used for values of 100%. In other
cases lognormal with a standard deviation of 40% was
applied
ASC
75
20
5
±20
±100
-100, +500
Lognormal with standard deviation of 40%
Energy content
40
50
10
0
±20
±100
An uncertainty value of 0% for an energy of 0 was applied.
In other cases a lognormal with a standard deviation of
30% was applied
Processing
supplement
80
10
10
0
±50
±100
An uncertainty of 0% was applied for materials not added a
processing supplement. In other cases a lognormal with a
standard deviation of 40% was applied
Energy
consumption
during use
80
15
5
±20
±50
±100
Lognormal with standard deviation of 35%
Average weight of
products in the
commodity group
80
20
±10
±50
Lognormal with standard deviation of 25%
Share of
combustible waste
for incineration
80
20
±20
±100
Lognormal distribution with standard deviation of 25%,
laterally reversed so that it has zero around 100% and
subsides towards the value of 0%. Negative values were set
at 0%
Energy efficiency
at solid waste
incineration
80
20
±10
±50
Lognormal with standard deviation of 25%, laterally
reversed so that it has zero at the value 100% and subsides
towards the value of 0%. Values below 20% were fixed at
20%
Notes: ') For explanation of the stated data, see the text
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