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Parameter
Dimension
Value
Pellet’s characteristic size
mm
6
Pellet’s characteristic length
mm
Max 30
MJ/kg
>17.2
Recommended fuel net calorific value (low
heating value)
kWh/kg
>4.7
Wood pellets category
A, AB, B
Ash content
%
See Table 2.4.
Moisture content
%
Max. 8 – 10%
Table 2.3 Recommended solid fuel properties – wood pellets
Pellet’s category
A
d
DU
A
%
6
.
0
≤
d
A
%
0
.
97
≥
DU
AB
%
6
.
0
≤
d
A
%
0
.
97
<
DU
B
%
0
.
1
6
.
0
≤
<
d
A
%
0
.
97
≥
DU
BC
%
0
.
1
6
.
0
≤
<
d
A
%
0
.
97
<
DU
C
%
0
.
2
%
0
.
1
≤
<
d
A
%
0
.
97
≥
DU
CD
%
0
.
2
%
0
.
1
≤
<
d
A
%
0
.
97
<
DU
D
%
0
.
3
%
0
.
2
≤
<
d
A
%
0
.
97
≥
DU
DE
%
0
.
3
%
0
.
2
≤
<
d
A
%
0
.
97
<
DU
E
%
0
.
3
>
d
A
%
0
.
97
≥
DU
EF
%
0
.
3
>
d
A
%
0
.
97
<
DU
Table 2.4 Pellets classification, considering their physical properties
(based on fuel proximate analysis) – according to fuel evaluation
methods, developed and applied in ERATO company;
where:
A
d
– ash contents, dry basis, [%];
DU – mechanical durability, [%];
