p. 6/48
2.
Automatic pellet burner of series “GP” technical data
2.1.
Thermal and technical data of automatic pellet burner of series “GP”, utilizing wood
pellets are given in
Table 2.1
;
2.2.
Dimensions and technical data of automatic pellet burner of series “GP” are given in
Table 2.2;
2.3.
Recommended solid biomass fuel properties – wood pellets, are given in
Table 2.3;
2.4.
Pellets classification, considering their physical properties (based on fuel proximate
analysis) are shown in
Table 2.4;
2.5.
The European standard for wood pellets ENplus is shown on
Table 2.5
;
Parameter
Dimension
Value
Model
-
GP 25 IV
GP 32 IV
Nominal thermal capacity
kW
25
32
Thermal capacity operation range
kW
7 – 25
10 – 32
Utilized solid fuel
Wood pellets;
Pre-dried cherry nuts;
Other dried nuts;
Utilized wood pellets, complying ENplus
ENplus-A1*
Utilized pellets, complying pellet burner producer
classification methodology
A, AB, B*
Wood pellets fuel consumption rate at nominal
thermal capacity
kg/h
5.3
6.8
Fresh air flow rate, required for effective
combustion process and boiler operation
kg/h
45 – 50
57 – 64
m
3
/h
39 – 44
50 – 56
Averaged wood pellets consumption rate (the unit
is operating in a popular heating system)
kg/h
3.6
4.7
Air excess ratio
λ
1.5 – 1.6
Solid fuel residue
ash
The quantity depends on
the ash contents in the
raw fuel, as well as
operating conditions
Table 2.1
Thermal and technical data of automatic pellet burner “GP”, utilizing wood pellets;
* EXPLANATION :
the automatic pellet burner of series
“GP”
is designed to utilize wood
pellets, which have properties, defined in the referred ENplus norm. As an temporal exception
(for several hours) it is allowed to utilize pellets, which are not covering the required class of
the fuel, practically in such cases the fuel has low quality and high ash content, which leads
to more frequent ash residue cleaning of the burner’s grate, as well as the heat exchanger’s
walls;
