How much energy is incident from the sun per year (in EJ)? The solar flux at the earth’s surface is 1 kW/m2 and one can approximate the earth as a sphere of radius 6400 km. How does this compare with the world total energy produced annually? (use BP or EIA data) . If 70% of the primary energy does no useful work and is wasted how does the energy that does useful work compare with the annual energy incident from the sun?
How much energy is incident from the sun per year (in EJ)? The solar flux at the earth’s surface is 1
kW/m2 and one can approximate the earth as a sphere of radius 6400 km. How does this compare with the world total energy produced annually? (use BP or EIA data) . If 70% of the primary energy does no useful work and is wasted how does the energy that does useful work compare with the annual energy incident from the sun?
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