Solar Energy
By DarthVader
Date: 2022-06-12
Topic: 125 see comments
Post views: 1031
Solar Energy
The surface area of the Earth facing the sun is:
π × (3.6 × 106)2 m
= 4.071504079 × 1013 m2
The power (solar flux, solar irradience) recieved at an air mass number of AM1.5 is equal to: 1000 W m-2
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Area = π × (3.6 × 106)2 m = 4.071504079 × 1013 m2
Power = 1000 W m-2
Total power from sunlight falling on Earth:
4.071504079 m2 × 1000 W m-2 = 4.071504079 × 1018 W
= 40715 TW
= 40.7 PW
Levels Of Solar Flux
The level of solar irradiation attenuates as it passes through the Earth's atmosphere leaving a lower value of power per m2 at the surface as compared to in space.
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Just above Earth's atmosphere = 1300 W m-2
On the Earth's surface = 1000 W m-2
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UK average = 100 W m-2
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