Page.
10/55
The European wood pellets standard EN 14961-2:2010
defines wood pellets certificate ENplus for pellets, utilized in
boilers and appliances for domestic heating systems. The
certificate EN-B is applied for pellets, utilized in industrial
boilers. In principal the ENplus standard defines two quality
classes:
А
1
и
А
2. The class
А
1 is highly restricted,
considering the ash content. The class
А
2 the limit of the ash content of the
wood pellets is higher – up to 1.5%. For industrial boilers the certificate EN-B is
applicable, which defines fewer restrictions on the pellets quality.
Parameter
Dimension ENplus-A1
ENplus-A2
Diameter
mm
6 (± 1)
6 (± 1)
Length
mm
3,15
≤
L
≤
40
1)
3,15
≤
L
≤
40
1)
Bulk density
kg/m³
≥
600
≥
600
Low calorific value
MJ/kg
≥
16.5
≥
16.5
Moisture content
%
≤
10
≤
10
Dust
%
≤
1
3)
≤
1
3)
Mechanical durability
%
≥
97.5
4)
≥
97.5
4)
Ash content
%
2)
≤
0,7
≤
1.5
Ash melting point temperature °C
≥
1200
≥
1100
Cl
%
2)
≤
0.02
≤
0.03
S
%
2)
≤
0.05
≤
0.05
N
%
2)
≤
0.3
≤
0.5
Cu
mg/kg
2)
≤
10
≤
10
Cr
mg/kg
2)
≤
10
≤
10
As
mg/kg
2)
≤
1
≤
1
Cd
mg/kg
2)
≤
0.5
≤
0.5
Hg
mg/kg
2)
≤
0.1
≤
0.1
Pb
mg/kg
2)
≤
10
≤
10
Ni
mg/kg
2)
≤
10
≤
10
Zn
mg/kg
2)
≤
100
≤
100
1) not more that 1% of the wood pellets should be with length of 40 mm, the maximal pellet
length is 45 mm ;
2) determined on dry mass;
3) the particles are <3.15 mm, fine particles, before fuel delivery;
4) in case the test measurements are performed with Lignotester, than the limit value is
≥
97.7% m.w.;
Table 2.5 ENplus - European standard for wood pellets;
