Environmental Engineering Reference
In-Depth Information
Fig. 7.34 Coefficient of
variation (C
v
%) versus time
during warm-up test at
150 W/s
2
1.5
1
0.5
0
0
100
200
300
400
500
600
Time [s]
1
0.8
0.6
0.4
0.2
0
1
11
21
31
41
51
61
71
81
Cell Number
Fig. 7.35 Individual cell voltage acquisition during warm-up test at 150 W/s at the instant
corresponding to maximum C
v
(90 s)
Fig. 7.36 Stack voltage,
current, and temperature
versus time during warm-up
test at 1,500 W/s
200
Stack Voltage [V]
Stack Current [A]
Temperature [°C]
150
100
50
0
0
100
200
300
400
500
600
Time [s]
