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.