In our proposed site there is no grid connection or any RES present.
Even in near future there is a very much less possibility that grid
connection will be available here because of the remote location of the
site. The transmission line cost is also higher due to the remote
location.
Again the generation of electricity in the country is not adequate to
fill up the demand in the urban area. That means the site is fully
deprived of electricity. The school was established in 1988. At present
there are about 270 students. It is a primary school so class 1 to class
5 is available here.
So, in each class there are about 54 students. It is Tin-shaded school
and has two blocks. The no of total class rooms is five. There is a
teacher’s room for a total of five teachers. There is also two wash
rooms for the students and one wash room for the teachers. A photograph
of the proposed school premises is given in Fig.2 .
Load Profile:
To find the load profile of the desired school, a field survey was
carried out to the school. During the survey it has been found that
there total 6 rooms and total 3 wash rooms.
The school is kept open all the days in a week except Friday. In a year
the school has a total of approx. 90 days of vacation. The school time
is from 9 a.m. in the morning to 4 p.m. in the afternoon. In the total 6
rooms we have considered 3 CFL light bulbs of 30 W in each room. In each
class room we have considered 3 Ceiling fans and in teachers room 2 fans
of 60 W each.
For the two bathrooms two CFL Bulbs of 23 W is considered. Besides a
projector of 300 W, three desktop computers (One for teachers and other
two for students) 150 W each and a printer of 40 W is also considered.Table 1 shows the load profile and kWh per day calculation in
detail. For simplicity, in calculation the off periods of the school
have not been considered.
Considering all of these the total load for the proposed site was found
10,468 Wh or 10.468 kWh for a day. All the loads are considered as AC
loads. According to the geographical position of Bangladesh, July is
considered as the hottest month and thus here in this study is
considered as the peak month. The annual average load was considered
6.87 kWh/day. The peak load for a day was considered 3.3 kW. The Load
profile on monthly basis considered in this work is summarized inTable 2 and Fig.3 shows the graphical representation
for annual load profile considered.