Models for obtaining the daily direct, diffuse and global solar radiations

Mghouchi, Y. El; Bouardi, Abdelmajid El; Choulli, Z.; Ajzoul, T.

doi:10.1016/j.rser.2015.11.044

Cited by 77 publications

(32 citation statements)

References 12 publications

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“…Marques Filho et al carried out observational charaterisation and empirical modelling of global radiation, diffuse and direct solar radiation on surfaces in the city of Rio de Janeiro [9]. El Mghouchi et al evaluated four empirical models to predict daily direct diffuse and global radiation in Tutuan city, north of Morocco [10]. Jakhrani et al investigated the accuracy of different empirical models for calculating total solar radiation on tilted surfaces [11].…”

Section: State Of the Artmentioning

confidence: 99%

A Comprehensive Approach for Modelling Horizontal Diffuse Radiation, Direct Normal Irradiance and Total Tilted Solar Radiation Based on Global Radiation under Danish Climate Conditions

et al. 2018

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A novel combined solar heating plant with flat plate collectors (FPC) and parabolic trough collectors (PTC) was constructed and put into operation in Taars, 30 km north of Aalborg, Denmark in August 2015. To assess the thermal performance of the solar heating plant, global radiation, direct normal irradiance (DNI) and total radiation on the tilted collector plane of the flat plate collector field were measured. To determine the accuracy of the measurements, the calculated solar radiations, including horizontal diffuse radiation, DNI and total tilted solar radiation with seven empirical models, were compared each month based on an hourly time step. In addition, the split of measured global radiation into diffuse and beam radiation based on a model developed by DTU (Technical University of Denmark) and the Reduced Reindl correlation model was investigated. A new method of combining empirical models, only based on measured global radiation, was proposed for estimating hourly total radiation on tilted surfaces. The results showed that the DTU model could be used to calculate diffuse radiation on the horizontal surface, and that the anisotropic models (Perez I and Perez II) were the most accurate for calculation of total radiation on tilted collector surfaces based only on global radiation under Danish climate conditions. The proposed method was used to determine reliable horizontal diffuse radiation, DNI and total tilted radiation with only the measurement of global radiation. Only a small difference compared to measured data, was found. The proposed method was cost-effective and needed fewer measurements to obtain reliable DNI and total radiation on the tilted plane. This method may be extended to other Nordic areas that have similar weather.

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Section: State Of the Artmentioning

confidence: 99%

A Comprehensive Approach for Modelling Horizontal Diffuse Radiation, Direct Normal Irradiance and Total Tilted Solar Radiation Based on Global Radiation under Danish Climate Conditions

et al. 2018

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“…where d is the data number, H ic is the value estimated with the method, H im is the value of measured ground data and H m shows the daily average value of ground data (El Mghouchi et al, 2016). The found RRMSE value gives information about the quality of the solar radiation estimations obtained from the method.…”

Section: Statistical Errorsmentioning

confidence: 99%

“…Also, environmental impacts like global warming, climate change and an increase in carbon emissions to the atmosphere show the need of using clean and renewable power sources in the future. Solar energy, which has the highest power potential among all sources, has drawn the attention of technology developers (Myers, 2003;Ulgen and Hepbasli, 2009;Badescu et al, 2013;El Mghouchi et al, 2016). The accurate knowledge of solar radiation is of utmost importance in terms of planning the energy systems to be established, cost calculations and productivity analysis.…”

Section: Introductionmentioning

confidence: 99%

Performance evaluation of a coupled method for the estimation of daily global solar radiation on a horizontal surface

Rusen

2018

Atm

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El cálculo exacto de la cantidad de radiación solar global potencial en la superficie de la tierra es uno de los parámetros más importantes para las inversiones en energía solar y los estudios de largo plazo sobre cambio climático. Por lo general, los datos más exactos de radiación solar están disponibles en estaciones terrestres que realizan mediciones directas. No obstante, en áreas donde esta información no es asequible, la radiación solar global puede estimarse utilizando algunos métodos de cálculo. En este estudio se comparan y analizan algunos métodos para estimar la radiación solar global que llega a una superficie horizontal, con el fin de establecer cuál es el más exacto. Las comparaciones se llevan a cabo entre algunos métodos empíricos convencionales obtenidos de la literatura, el método HELIOSAT basado en satélites y el método acoplado (híbrido) que emplea tanto datos de superficie como imágenes satelitales. Estos métodos se han probado antes y diversos investigadores han demostrado que son los más exactos para Turquía. Los resultados obtenidos sobre el desempeño se compararon con mediciones de superficie y todos los métodos se analizaron por medio de errores estadísticos en el sitio elegido. De acuerdo con los resultados de los últimos seis años de datos, el método acoplado (excepto en el caso del método Angstrom) es mejor que los otros, con valores diferenciales diarios (91%) y valores diferenciales diarios absolutos de menos de 2.5 MJ m-2 por día.

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“…The only solution is to use related software tools, as Meteonorm, Meteostat, PVGIS and Nasa [69]. In this framework, many reviews show mathematical models estimating solar radiation [70][71][72][73][74].…”

Section: Solar Irradiation Datamentioning

confidence: 99%

Viability study of the use of grid connected photovoltaic system in agriculture: Case of Algerian dairy farms

Bey

Hamidat²,

Benyoucef

et al. 2016

Renewable and Sustainable Energy Reviews

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Models for obtaining the daily direct, diffuse and global solar radiations

Cited by 77 publications

References 12 publications

A Comprehensive Approach for Modelling Horizontal Diffuse Radiation, Direct Normal Irradiance and Total Tilted Solar Radiation Based on Global Radiation under Danish Climate Conditions

A Comprehensive Approach for Modelling Horizontal Diffuse Radiation, Direct Normal Irradiance and Total Tilted Solar Radiation Based on Global Radiation under Danish Climate Conditions

Performance evaluation of a coupled method for the estimation of daily global solar radiation on a horizontal surface

Viability study of the use of grid connected photovoltaic system in agriculture: Case of Algerian dairy farms

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