How can I deal with an angle of incidence with greater than 90 degree values if I am calculating solar radiation?

closed as unclear what you're asking by tinlyx, Barbarossa, whyzar, ArMoraer, Hornbydd Apr 30 '18 at 17:35

Please clarify your specific problem or add additional details to highlight exactly what you need. As it's currently written, it’s hard to tell exactly what you're asking. See the How to Ask page for help clarifying this question. If this question can be reworded to fit the rules in the help center, please edit the question.

  • First of all I am confused with different formula available for solar angle of incidence calculation. If i follow the book by John A. Duffie William A. Beckman, there r 3 formula to calculate solar angle of incidence! I implemented all three, but all of them giving different answer. I don't know where is the problem! Even there are few values that are greater than 90 degrees, I know the reason why they are more than 90 but I dont know what to do with those values when calculating solar irradiation (beam / diffuse) formula. – Sukriti Bhattacharya May 1 '18 at 10:10

It would need to be normalised. divide your non normalised solar radiation value by the Cos of (90°-Local Solar Elevation).

  • can you suggest me some tutorial or paper that does this? any reference? – Sukriti Bhattacharya May 1 '18 at 10:02
  • Try Dewa et Danoedoro, 2017. – B-C B. May 1 '18 at 15:50

Not the answer you're looking for? Browse other questions tagged or ask your own question.