TY - JOUR
TI - Evaluation of different sunshine-based models for predicting global solar radiation – case study: New Borg El-Arab city, Egypt
AU - Hassan Gasser E
AU - Youssef M Elsayed
AU - Ali Mohamed A
AU - Mohamed Zahraa E
AU - Hanafy Ahmed A
JN - Thermal Science
PY - 2018
VL - 22
IS - 2
SP - 979
EP - 992
PT - Article
AB - The unavailability of the solar radiation measurements for different  locations around the world leads to develop various empirical models to  estimate the global solar radiation. In this consider, this study aims to  investigate the performance of different solar radiation models to predict  the monthly average daily global solar radiation on a horizontal surface. To  achieve this, the measured global solar radiation data for a case study  location are used. The model predictions are compared with the measured data  to introduce the most accurate model for estimating the global solar  radiation. The performance of each model is evaluated based on the different  statistical indicators. The results show that the Robaa model has the best  performance among the other models. Consequently, it can be used for  estimating global solar radiation on a horizontal surface in the location  under consideration. The accurate estimations of the global solar radiation  using this approach can be used in the design and evaluation of performance  for different solar applications.