Eventos Anais de eventos
ENCIT 2018
Brazilian Congress of Thermal Sciences and Engineering
ANALYSIS OF THEORETICAL MODELS OF THE GLOBAL SOLAR RADIATION WITH DATA COLLECTED IN BRASÍLIA - DF
Submission Author:
Ariane Lima , DF
Co-Authors:
Ariane Lima, Mario Benjamim Baptista de Siqueira
Presenter: Ariane Lima
doi://10.26678/ABCM.ENCIT2018.CIT18-0257
Abstract
The purpose of this paper is to analyze the theoretical models for estimating solar radiation, including that of Liu and Jordan (1960) for an isotropic sky, and of Klucher (1979), Hay-Davies (1980) and Reindl et al. (1990), which take into account anisotropic radiation, using data collected from the National Organization System of Environmental Data (SONDA) in 2014. The methodology is based on a mathematical modeling with the theoretical models of solar radiation developed in the MATLAB® R2016a software, in relation to the acquired data. It created a set of comparative data about solar radiation on vertical and tilted surfaces, technical observations on global, direct normal and diffuse radiation throughout 2014, and results for the definitions of a clear sky and a cloudy sky through the distribution of global and incidental radiation (Kt), with the distribution of diffuse radiation divided by the global (Kd). The comparison of the theoretical models presented satisfactory and visible results for the Reindl model, such as the anisotropic behavior characterized most precisely the estimate of global solar radiation in Brasilia - DF.
Keywords
solar radiation, theoretical models, diffuse radiation
