La radiación solar global en la provincia de Loja, evaluación preliminar utilizando el método de Hottel.

Different theoretical models exist for obtaining an initial knowledge about the solar radiation values on a horizontal surface in a certain place. The present work is focused in obtaining the solar radiation values on a horizontal surface using Hottel model. For the realization of the present work it was made an Microsoft Excel© book and using for it the methodology proposed by Passamai, adding a group of additional worksheets to obtain in an automatic way the monthly and annual summary of the daily values in order to use geographical points to interpolate these summaries later on in a Computer Aid Designs Software (CAD) to made the different maps for the work area. A total of 370 points was processed according to height, latitude and longitude corresponding to the Digital Elevation Model (DEM), spaced 0.1◦ (approximately each 10 km) to obtained monthly and annual values of direct, diffuse and global radiation, on a horizontal surface. The values of Monthly global radiation are shown for clear sky.