Environmental Engineering Reference
In-Depth Information
Time (ms)
0
112
250
1,500
2,000
Voltage (V)
16.0
12.51
14
12.1
13.4
Current (A)
0
2,511
1,000
848
0
UC volts
16.00
15.00
14.00
13.00
12.08
0
250.00 m 500.00 m 750.00 m
1.00
1.25
1.50
1.75
2.00
A3:
ESR ¼ 0.237 m W (for the pack the total ESR ¼ 1.39 m W )
Q4:
For Q3 the integral of the current waveform is found to be
Str_mtr_amps
2.52 k
2.00 k
1.50 k
1.00 k
500.00
0
480.00
0
250.00 m
750.00 m
1.00
1.25
1.50
1.75
2.00
t
ð Idt ¼ CdU ¼ 1,457 As
dQ ¼
Determine the average cell capacitance from this information and the data
cited in the table in Q3.
Hint: d U ¼ 16.0-13.4 ¼ 2.6 V
A4:
< C > ¼ 560.4 F for the pack; therefore, at cell level C ¼ 6 560.4 ¼ 3,362 F
Q5:
For Q3 the 14 L CIDI engine speeds up very fast when using this very low
resistance ultra-capacitor module charged to full potential of 16 V rather
than using a 12.6 V lead-acid battery. For this example:
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