Civil Engineering Reference
In-Depth Information
Electrical power
3.5
3
2.5
2
1.5
1
0.5
0
0
0.5
1
1.5
2
2.5
x 10
5
Time [s]
Fig. 49 Evolution of the electrical power produced by the Stirling engine in winter regime, model 1
The performances of the temperature control system of the thermal agent in the
accumulating tank are illustrated in Fig.
50
(the set point is equal to 72
°
C). The
temperature oscillation corresponds to the moments when the Stirling engine
operating regime is discontinuous (compare Figs.
49
and
50
). When the thermal
load necessary to ensure the desired temperature in the residence is constant, the
temperature control loop of the thermal agent is in
uenced by two disturbance
values: the power variation in the domestic water circuit and the thermal power
variations of the Stirling engines. The temperature control of the thermal agent is
achieved through a control given to the pellet boiler. Figure
51
presents the power
variation of the pellet boiler, as a result of the control given by the temperature
controller. One can notice that the energy accumulated in the tank varies within a
wide range, almost up to the nominal power. When the outside temperature is
constant, the temperature variations in the residence are very small (Fig.
52
), being
determined by the dynamic deviations of
the thermal agent
temperature in
convectors.
Thermal agent temperature
75
74
73
72
71
70
69
68
0
0.5
1
1.5
2
2.5
x 10
5
Time [s]
Fig. 50 Thermal agent temperature evolution in the accumulation tank in winter regime, model 1
Search WWH ::
Custom Search