Under the circumstances of the maximum power values it is
shown in Fig. 5(a) and (b) that the solar radiation is almost reach
the maximum values for both experiment days. And also it shows
that changing of maximum power is directly related to temperature
differences. As the time is progressing, temperature difference
between the hot and cold side increase by increase in solar radiation
and reach the maximum value at afternoon at about 1:30 p.m.
for both experiment days. It is also seen that, maximum values of
calculated power and measured local radiation are not overlap in
the same time period. It is evident that the temperature difference
between the hot and cold side of the TE module was not reached
the maximum value when the solar radiation reached maximum
for both experiment days. Generated maximum power are computed
to be about 0.83W and 0.66976W at 1:30 p.m. on 16th
and 21th August, respectively. And again in the evening progress
temperature difference between hot and cold side is decreasing
time by time so that generated electrical energy hence electrical
efficiency become reduced.