New technique for Global Solar Radiation prediction

Solar radiation estimation is an important part for various solar energy systems. Many researches have proposed different techniques to estimate the solar radiation that hinder using expencive devices for direction measurement of solar radiation. Nonlinear and complex nature of these methods forced researchers to look for quick and efficient techniques to solve related issues. In this paper، a new method based on the Angstrom equation is introduced which estimates the monthly average daily global solar radiation on a horizontal surface by Bees Algorithm as a heuristic technique implemented in MATLAB software. The empirical coefficients for Angstrom equation are calculated for four different climate regions of Iran using proposed method proved the efficiency and predominance of the new techniue to find a more accurate level of solar radiation.