European Journal of Scientific Research - EuroJournals

394 R.Y. Tamakloe and K. Singh
Table 5e: Influence of varying potential difference across the hydrogen cell for 0.2M concentration.
I-V characteristic for 0.2M concentration
Hydrogen cell Voltage/V Hydrogen cell Current/A Volume of H2/ml/min Power/W
11.904 0.17 1.1 2.0237
11.881 0.17 1.0 2.0198
11.856 0.17 0.9 2.0155
11.827 0.17 0.9 2.0106
11.804 0.16 0.9 1.8886
11.770 0.16 0.8 1.8832
11.721 0.16 0.7 1.8754
11.646 0.15 0.7 1.7469
Maximum volume (8.6ml/min) of hydrogen collected would amount to 12384ml/day if the
system operates 24hrs a day. Looking at the voltage rate of change of the current, there is no significant
decrease in the current through the hydrogen cell as the concentration decreases. Volume of hydrogen
produced per minute rather reduces significantly, showing that far lower hydrogen cell concentration
than 1.0M results in low conductive ions. Taking into consideration the power rate, volume of
hydrogen produced is quite significant.
Table 6a: I-V characteristics of both Electrolysis cell and Panel for 1000W/m² radiation when coupled with
varying resistor. (Vo = Open-Circuit Voltage; Isc = Short-circuit Current)
Radiation=1000W/m² Temp=30.1ºC
CELL Vo=18.75V Isc=3.01A PANEL
Voltage/V Current/A Res/ohm Voltage/V Current/A
0 0.88 3.01
15.45 1.68 1 3.08 2.98
14.66 1.59 2 5.81 2.93
13.55 1.46 3 9.38 2.79
12.44 1.30 4 11.61 2.60
11.75 1.20 5 12.40 2.50
11.20 1.12 6 14.02 2.23
10.71 1.05 7 14.61 2.08
10.09 1.00 8 15.27 1.86
9.91 0.99 9 15.68 1.69
9.22 0.86 10 16.04 1.51
8.90 0.82 11 16.18 1.44
8.61 0.78 12 16.41 1.34
8.37 0.74 13 16.59 1.25
8.13 0.71 14 16.76 1.16
7.88 0.67 15 16.81 1.10
7.72 0.65 16 16.98 1.04
7.41 0.61 17 17.14 0.96
7.34 0.60 18 17.16 0.94
7.15 0.54 19 17.27 0.87
6.82 0.53 20 17.38 0.81
6.76 0.52 21 17.40 0.79
6.44 0.47 22 18.75 0