Solar azimuth angle calculation

Hi.


In the case of the parabolic trough physical model, I have a question, because I want to calculate the solar azimuth angle. I have reviewed some sources of information, but would you please suggest me some. Of the papers reviewed to calculate, I have noticed that this parameter is required to take into account the declination and hour angle, how about that day and hour would be the reference to perform this calculation? If you use any of the models surveyed.



Thanks a lot.

Thanks Paul

But I still have a question, since the equation to which you refer is dependent on where the plant location and the position of the sun in time, i.e. the declination and hour angle. I can calculate these parameters based on a design point?, Some authors set on the 21st June at solar noon (12:00 solar time), or should be doing other considerations

Thanks a lot