ESTIMATION OF ANNUAL SOLAR RADIATION ON A TILTED SURFACE AS A FUNCTION OF THE SLOPE ANGLE
Gisele Mol da Silva1; Cristiana Brasil Maia2; Antônia Sônia Alves Cardoso Diniz2
1 Centro Federal de Educação Tecnológica de Minas Gerais - CEFET-MG - Av. Amazonas, 5253. Belo Horizon; 2 Pontifícia Universidade Católica de Minas Gerais - PUC Minas - Av. Dom José Gaspar, 500. Belo Horizo
doi:10.20906/CPS/COB-2015-1548
Resumo
The total annual energy received in a tilted surface can presente significant differences, the slope angle playing an important role. This paper performed an analysis of the influence of the surface slope on the annual energy received. It was developed a model to determine the annual solar radiation incidente on a surface located in Belo Horizonte, in the southern hemisphere. The slope of the surface was varied every 5 °, for different levels of clearness index. The results indicated that the values obtained for the total anual energy, the total energy in the summer and the total energy in winter are in good agreement with literature data.
Palavras-chave: Solar radiation; Tilt angle; Annual energy