A
significant difference was observed between the panel back
side and front side temperatures. Cooling the module resulted
in the reduction of the cell temperature by 19.3%. In case of
back surface, the maximum temperatures for cooling and noncooling
cases were 25.9 and 42.80C, respectively. The
percentage reduction observed in the back surface temperature
was 34%. This temperature reduction resulted in a noticeable
improvement in electrical efficiency as shown in Fig. 6. The
maximum value of efficiency without cooling was 15.8% at 9
am whereas with cooling the maximum value was 18% at
11am. With active cooling, the increase in the electrical power
yield over the day was 9%. The maximum value of power
output of the module for non-cooling case was185 W at 11am
whereas the maximum power output with cooling was 211 W
(Fig. 7). An average increase of 10% in the power output of
the module was observed in the case of cooling the PV panel
with water.