Calculating Solar Constant at Sunset: How Much Energy Will Be Received?

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SUMMARY

The discussion centers on calculating the energy received on Earth from a perfect 1 square meter reflector positioned in space at sunset. The solar constant, defined as the amount of solar radiation falling on 1m² per second above the atmosphere, is crucial for this calculation. Participants emphasize the importance of considering the angle of the reflector relative to both the sun and the Earth to determine the actual energy received. The consensus is that the energy will not equal the solar constant due to these angular considerations.

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  • Understanding of solar constant and its definition
  • Basic knowledge of geometry, specifically angles and reflections
  • Familiarity with the concept of solar radiation
  • Ability to visualize and interpret diagrams related to solar angles
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  • Research the mathematical formula for calculating solar radiation based on angle of incidence
  • Explore the effects of atmospheric absorption on solar energy calculations
  • Learn about the geometry of solar reflectors and their alignment
  • Investigate the impact of time of day on solar energy reception
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Students and professionals in physics, engineering, and environmental science who are interested in solar energy calculations and the principles of solar radiation.

ritwik06
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Assume that a perfect reflector of 1 square metre, is sent up in space and aligned to reflect the light from sun to earth. How much energy will be received on ground when the mirror is overhead at sunset?

(Solar constant is the amount of Solar Radiation that falls on 1m^2 area per second above the atmosphere at a vertical angle. Assume that nothing is absorbed by the atmosphere.)

Will the energy be equal to solar constant? I don't think so. If you agree just tell me how to solve this.
 
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They probably want you to consider the angle of the reflector to the sun and earth. Draw a picture!
 
russ_watters said:
They probably want you to consider the angle of the reflector to the sun and earth. Draw a picture!

I have drawn the picture but how will I find the angle etc. ? How will the angle help in getting the answer. It should be veritcal.
 

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