Open AccessCOMPARATIVE STUDY OF DIFFERENT MODELS FOR CALCULATION OF DNI
Author(s) -
Gabriel da Silva Lima,
Adriana Oliveira Souza
Publication year - 2018
Publication title -
engenharia térmica
Language(s) - English
Resource type - Journals
ISSN - 1676-1790
DOI - 10.5380/reterm.v17i2.64127
Subject(s) - mathematical model , sky , irradiance , computer science , econometrics , mathematics , meteorology , statistics , geography , physics , quantum mechanics
For prospecting or design of Concentrating Solar Power (CSP) systems it is necessary to know the distribution of the Direct Normal Irradiance (DNI) of the region. However, due to the recurring operational problems of measuring instruments, the use of mathematical models estimating the local DNI can be a very useful tool. The objective of this work is to construct a mathematical model that is used in the calculation of the DNI using experimental data provided by the Laboratory of Tropical Environmental Variables (LAVAT/INPE). This model was compared with other mathematical models already present in the literature. The consideration of clean-sky was used, that is, the effects of cloudiness, among others, were neglected.