Civil Engineering Reference
In-Depth Information
Table 13 Daily operation of the photovoltaic system in winter regime
Interval within one day
Irradiance (W/m
2
)
Irradiation (kW h)
Electrical power (kW h)
0
-
8
00
0
0
0
8
00
8
30
-
2.4
200
0.24
8
30
9
00
-
4.8
400
0.48
9
00
-
9
30
7.2
600
0.72
9
30
10
00
-
9.6
800
0.96
10
00
14
00
-
12
1,000
1.2
14
00
-
14
30
9.6
800
0.96
14
30
15
00
-
7.2
600
0.72
15
00
15
30
-
4.8
400
0.48
15
30
16
00
-
2.4
200
0.24
16
00
-
24
00
0
0
0
(a)
(b)
Electric power (winter)
Electric power (summer)
1.5
1.5
1
1
0.5
0.5
0
0
0
1
2
3
4
5
6
7
x 10
4
0
1
2
3
4
5
6
7
x 10
4
Time [s]
Time [s]
Fig. 24 Profile of the electrical power in 24 h generated by the PV source in winter (a) and
summer (b)
is own consumption is dependent on the
summer/winter operating regime. In both regimes, the analysis has to take into
account the dif
The load generated by the equipment
'
cult (extreme) meteorological conditions, for which the thermal
balances of the residence were drawn up. These extreme situations generate the
operating modes in which the system equipments are active most of the time, and
therefore produce the highest equipment
'
s own consumption.
(a)
In winter regime the equipment
'
s own consumption contains two components:
the permanent regime consumption in dif
cult meteorological conditions, when
the heating plant operates permanently. This consumption is given by: the
electrical subsystem of the Stirling engine (0.09 kW), the electrical subsystem of
Search WWH ::
Custom Search