Question

The total energy consumption of a country is of the order 108 J. What area of solar collector would be needed to produce this energy, given that the power falling on the Earth's surface due to solar radiation is 1400 W/m2. Assume 100% efficiency and Average solar energy flux= 500 W/m2

Answer 1

$$E=Pt=IAt$$

$$10^8=(1400)(365\cdot24\cdot3600)A$$

$$A=0.002265\ m^2$$