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General models for estimation of the monthly mean daily diffuse solar radiation (Case study: Algeria)

机译:估计月平均日漫射太阳辐射的通用模型(案例研究:阿尔及利亚)

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摘要

In this study, 10 empirical models are developed correlating monthly mean daily diffuse solar radiation with monthly mean sunshine records and global solar radiation data. The aims of this study are: (ⅰ) analyzing the correlation between the diffuse fraction and the sunshine fraction/clearness index measured data using these 10 empirical equations at six Algerian stations: Algiers, Constantine, Ghardaia, Bechar, Adrar, and Tamanrasset, and to present new constants for each selected location. (ⅱ) The performance of the proposed models with the new correlation constants are validated and checked their accuracy by comparing it with measured values at the six stations using seven statistical error tests, in order to choose the best models for estimating the monthly mean daily diffuse solar radiation, and (ⅲ) develop generalized models for estimating the diffuse solar radiation data in other Algerian locations in the absence of the measured diffuse radiation data. This study finds that the quadratic and cubic equation which based on global solar radiation data performed the best accuracy. Moreover, these two regression models can be used for the proposed generalized models for predicting the monthly mean diffuse solar radiation over Algeria.
机译:在这项研究中,建立了10个经验模型,将月平均日漫射太阳辐射与月平均日照记录和全球太阳辐射数据相关联。这项研究的目的是:(ⅰ)在六个阿尔及利亚站点(阿尔及尔,君士坦丁,加尔达亚,贝查尔,阿德拉尔和塔曼拉塞特)使用这10个经验方程分析扩散分数与日照分数/净度指数测量数据之间的相关性,以及为每个选定的位置显示新的常数。 (ⅱ)通过使用七个统计误差测试将其与六个站点的测量值进行比较,从而验证了具有新相关常数的建议模型的性能,并检查了其准确性,以便选择最佳模型来估算每月平均日扩散(ⅲ)开发了通用模型,用于在没有测得的散射辐射数据的情况下估计其他阿尔及利亚位置的散射太阳辐射数据。研究发现,基于整体太阳辐射数据的二次方程和三次方程的精度最高。此外,这两个回归模型可用于建议的广义模型,以预测阿尔及利亚的月平均漫射太阳辐射。

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