Environmental Engineering Reference
In-Depth Information
Electrical Power Harvested from Parallel Solar
and hermal Energy Sources
300
T
Measured
S
+
T
Solar (
S
Simulated
+
250
) 380 lux
hermal (
S
T
) ∆5
200
150
100
50
0
0
1
2
3
Voltage (V)
4
5
6
Electrical Power Harvested from Parallel Solar
and hermal Energy Sources
800
Simulated
S
+
T
Measured
T
Solar (
S
) 1010 lux
hermal (
S
+
700
T
) ∆T10
600
500
400
300
200
100
0
0
2
4
6
8
10
12
Voltage (V)
FIGURE 5.23
Compare experimental harvested power with simulated power under the least and most power
harvesting conditions (top) 380 lux and
T
=5
◦
C and (bottom) 1010 lux and
T
=10
◦
C, respec-
tively.
Referring to
Figures 5.24
and
5.25
,
it can be seen from the P-R curves (Ther-
mal
T10) that the MPPs of the stand-alone thermal energy
harvester are fixed at its internal resistance of 82 k
T5 - Thermal
under temperature differ-
ences in the range of 5 to 10 K. When the thermal energy harvester is parallel
with the solar panel under weak illumination of 380 lux and strong illumina-
tion of 1010 lux, it can be observed from the P-R curves [Measured S+T (
T5)
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