p. 28/48
After the process of initial operation of the pellet burner (the fuel in the burner’s grate
has been successfully ignited) and the heat consumer unit has been tempered and reached
steady-state operating mode, it could be assumed that the heating units are in operating mode,
appropriate for precise process adjustment. . At steady-state operation the precise adjustments
of the pellet burner should be done and/or the burner’s operation should be checked and
verified. The thermal capacity stage of the pellet burner should be adjusted, complying with
heat consumption rate of heating system/heat consumer unit. At nominal thermal capacity
mode is performed the so called “hot test” of the entire heating system, following the local
legislation requirements and norms.
ATTENTION :
The air flow rate is substantial for the optimal operation of the pellet burner
and the entire system : burner – heat consumer. The air flow rate also influences the
efficiency and the reliability of the system – in case the air flow rate is below an optimal
operating value (i.e. air deficiency) the fuel is not combusted efficiently and this results in
decreased overall efficiency of the system. In case the air flow rate exceeds the optimal
operating range, this causes combustion chamber cooling and overall system efficiency as
well, The above shows, that free access of the ambient air to the pellet burner should be
designed, also for air ventilation of the domain, where the pellet burner and the heat
consumer unit are installed. This will allow efficient operation of the pellet burner and
optimal operation of the entire heating system, resulting in low fuel consumption rate and low
pollutant emissions, as well as increased overall reliability if the system’s components.
5.2.8.1.
Operating mode of the burner of series “GP IV”
After the fuel ignition process has been done successfully, the control module of
the burner continues its operation, following factory preset algorithm, in order to stabilize the
combustion process, as indicated on the display, show on the figure below:
Figure 5.6.
The
control
module display indicates the operating mode of the burner –
transition mode
– transition process from fuel ignition to stabilized combustion process at
low thermal capacity stage.
NOTE - „TRANS.:10kW
„ – indicates, that the burner is in intermediate operating mode,
operating at thermal capacity of 10кW;
After the transition mode, the burner’s algorithm continues to operate in the defined operating
mode, as shown on the figure below:
S
_
+
ESC
TRANS. : 10kW
32
o
FC: 65%
COMBUST 5 35kW
