Abstract

CONTRERAS-SEPULVEDA, Wilmer et al. Angström-Prescott empirical model to estimate solar radiation in Norte de Santander, Colombia. Revista Investig. Desarro. Innov. [online]. 2021, vol.11, n.2, pp.413-427.  Epub Sep 17, 2021. ISSN 2027-8306.  https://doi.org/10.19053/20278306.v11.n2.2021.12765.

The document shows the application of the empirical Angström-Prescott model in different places in Norte de Santander, Colombia. The model estimates solar radiation from hours of sunlight, at a site where brightness and solar radiation are measured. The data were obtained from the Institute of Hydrology, Meteorology and Environmental Studies, IDEAM; algorithms were developed in RStudio to process and analyze the information. The model establishes a linear relationship between solar radiation and the hours of sunlight, in a specific geographic location. Therefore, regression analyzes were performed for three different sites, using historical records of brightness and solar radiation, obtaining the R-squared coefficients of: 0.73, 0.78, and 0.42. The models were then extrapolated to nearby regions with solar brightness records, but without solar radiation data, to obtain an estimate of radiation at these locations. Finally, a database was created with monthly average information on solar radiation for various subregions of Norte de Santander, which can be used for the design and implementation of photovoltaic systems.

Keywords : solar radiation; Angström-Prescott equation; empirical model; solar brightness.

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