Question

The hospital management of Extended health Centre, Suhar has decided to install a solar photovoltaic based system to power the lamps in car parking zone in the premises. Being a design engineer with good knowledge on renewable energy, you are assigned for this design. The following data are provided:

Total number of lamps used in car parking: 20

Power rating of each lamp: 40 Watts

Daily usage of lamps: 6 pm to 6 am

The average solar radiation received in that location = 815 W/m2. Size of the solar cells: 15 cm x 150 mm.

Solar cells array in a Panel: 4 x 9.

Cell efficiency: 22 %.

Battery specification: 24 V, 220 Ah, DOD of 25 %.

Suggest a suitable solar photovoltaic system for the camp by estimating number of panels and batteries. Justify your answer with a suitable block diagram for the present scenario.

Answer 1