Evaluation of diffuse fraction and diffusion coefficient using statistical analysis

被引：0
作者：
Hicham Salhi
Lazhar Belkhiri
Ammar Tiri
机构：
[1] University of Mustapha Ben Boulaid-Batna 2,Laboratory of Applied Research in Hydraulics
来源：
Applied Water Science | 2020年 / 10卷
关键词：
Statistical analysis; Diffuse fraction; Diffusion coefficient; Sunshine ratio; Clearness index; Tamanrasset station;
D O I：
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学科分类号：
摘要：
In this study, eighty models are proposed in order to estimate the diffuse fraction and diffuse coefficient. For the proposed models, sunshine ratio and clearness index are considered as predictors. Monthly average global and diffuse solar radiation together with sunshine duration data of Tamanrasset station form 1995 to 2017 were analyzed. The different proposed models are compared and statistically analyzed to assess the performance of the best fitted model. Nine statistical indicators and Global Performance Indicator are computed to evaluate different proposed models. It is concluded that the cubic model with sunshine ratio and clearness index is selected as the best accurate model to estimate diffuse solar radiation on a horizontal surface in the study area.
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