Eventos Anais de eventos
COBEM 2017
24th ABCM International Congress of Mechanical Engineering
COMPARATIVE STUDY OF DIFFERENT MODELS FOR CALCULATION OF DNI TO APPLICATION IN CSP TECHNOLOGIES
Submission Author:
Gabriel Ivan Medina Tapia , RN
Co-Authors:
Gabriel da Silva Lima, Adeilson de Oliveira Souza, Gabriel Ivan Medina Tapia
Presenter: Adeilson de Oliveira Souza
doi://10.26678/ABCM.COBEM2017.COB17-1403
Abstract
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, separated by seasons, that is used in the calculation of the DNI using experimental data provided by the Laboratório de Variáveis Ambientais Tropicais (INPE) to the city of Natal/Brazil. This model will be compared with other mathematical models already present in the literature. These models are: HLJ (combination of models Hottel, Liu and Jordan), Kumar, Fu and Rich, Daneshyar-Paltridge-Proctor (DPP) and Meinel. The consideration of clean-sky was used, that is, the effects of cloudiness, among others, were neglected. Based on the statistical analysis implemented, it was possible to obtain a behavior similar to the Meinel model for most seasons, however, in general, these models of the lithary used presented significant discrepancies in relation to the model obtained with the experimental data.
Keywords
Concentrating Solar Power, Direct Normal Irradiance, mathematical models, clear-sky
