ABSTRACT

The fact of the matter is that the use of the equation for calculating the intensity of solar radiation in terms of the percentage of solar brightness developed, which is also one of my inventions. It is necessary to use solar constants (a, b), and these constants do not exist for any Libyan city, where the researcher who wants to calculate the intensity of solar radiation for any city in Libya uses the constants of the city of Algiers or the city of Cairo, as the nearest solar area to Libya, as a result of this use when applying the constants of the city of Algiers or Cairo in the equation for calculating the intensity of solar radiation in terms of the percentage of solar brightness, we will find that there is a very large difference between the values calculated by the equation for calculating the intensity of solar radiation in terms of the percentage of solar brightness and the values measured by the pyrometer.