Development of a Systematic Method for the Prediction of Solar Radiation on Inclined Planes

Page, J.K.; Flynn, R. J.

doi:10.1007/978-94-009-7112-7_13

Cited by 5 publications

(3 citation statements)

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“…The first term (I 0 ϵ) refers to the Earth's geometry. I 0 is the solar constant (the Sunbeam irradiance at the mean solar distance) [27], and ϵ is a correction factor due to Earth's orbit eccentricity [22,24].…”

Section: Clear-sky Beam Irradiance Modelmentioning

confidence: 99%

Validation of a 3D Local-Scale Adaptive Solar Radiation Model by Using Pyranometer Measurements and a High-Resolution Digital Elevation Model

Rodríguez,

García-Ferrero,

Sánchez-Aparicio

et al. 2024

Sensors

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The result of the multidisciplinary collaboration of researchers from different areas of knowledge to validate a solar radiation model is presented. The MAPsol is a 3D local-scale adaptive solar radiation model that allows us to estimate direct, diffuse, and reflected irradiance for clear sky conditions. The model includes the adaptation of the mesh to complex orography and albedo, and considers the shadows cast by the terrain and buildings. The surface mesh generation is based on surface refinement, smoothing and parameterization techniques and allows the generation of high-quality adapted meshes with a reasonable number of elements. Another key aspect of the paper is the generation of a high-resolution digital elevation model (DEM). This high-resolution DEM is constructed from LiDAR data, and its resolution is two times more accurate than the publicly available DEMs. The validation process uses direct and global solar irradiance data obtained from pyranometers at the University of Salamanca located in an urban area affected by systematic shading from nearby buildings. This work provides an efficient protocol for studying solar resources, with particular emphasis on areas of complex orography and dense buildings where shadows can potentially make solar energy production facilities less efficient.

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Section: Clear-sky Beam Irradiance Modelmentioning

confidence: 99%

Validation of a 3D Local-Scale Adaptive Solar Radiation Model by Using Pyranometer Measurements and a High-Resolution Digital Elevation Model

Rodríguez,

García-Ferrero,

Sánchez-Aparicio

et al. 2024

Sensors

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“…Irradiation is the amount of solar energy arriving on a unit area over a stated time interval (Wh m −2 ) [36]. We proposed TRAD model to estimate daily irradiation values in any ground station by Eq.…”

Section: Trad (Temperature-estimation Of Radiation) Daily Modelmentioning

confidence: 99%

“…Daily irradiance (W m −2 ), instantaneous energy received on a unit area per unit time [36] was calculated from G R d TRAD (Wh m −2 ). Following, we bring descriptions of daily atmospheric transmissivity and diffuse fraction models [33,37] and also Solar Analyst [17,19,20] which is used in the daily irradiation estimation using TRAD.…”

Section: Trad (Temperature-estimation Of Radiation) Daily Modelmentioning

confidence: 99%

A novel time-effective model for daily distributed solar radiation estimates across variable terrain

Mirmasoudi

Byrne

Kroebel³

et al. 2018

Int J Energy Environ Eng

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Accurate and precisess estimation of spatio-temporal variability of solar radiation is critical. Some commonly used models evaluate this variability using methods in which the data required for estimating atmospheric attenuation may not be easily accessible for some study areas. Here, a daily solar radiation estimation method which uses ambient air temperature, a Digital Elevation Model, time of year, and monthly radiation estimates from Solar Analyst model has been proposed. The objective was to use air temperature-based empirical models for atmospheric transmissivity and diffuse fractions to vary total monthly radiation estimation from Solar Analyst, and then calculate total daily radiation as a fraction of total monthly radiation by applying a daily transmissivity-based ratio, as air temperature data are readily available at most locations on the planet. Results revealed that daily solar radiation can be estimated very well, with Mean Absolute Bias Error of around 40-53 W m −2 or Mean Bias Error of ± 10%, under all sky conditions at seven sites in diverse climate regions, using significantly less input data. The presented method is an improvement over previously used methods with Mean Bias Error of under 10% but more input parameters. Furthermore, the hourly solar radiation values can be calculated using the presented method using the ratio between daily and hourly radiation, for example from literature values and estimated daily insolation. The result also showed that the method is more useful for those stations with substantially higher numbers of sunny days than cloudy or partly cloudy days because the uncertainty of the model decreased from cloudy to sunny sky conditions. The implemented Digital Elevation Models environment of this method makes it applicable in many studies that need spatial estimation of solar radiation, especially for solar energy generation projects. Keywords Solar radiation · Digital elevation model · Solar analyst · Atmospheric transmissivity · Air temperature Abbreviations

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Modeling zenith luminance on Madrid cloudless skies from illuminance on a horizontal surface

Soler¹,

Gopinathan²

2002

Energy Conversion and Management

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Development of a Systematic Method for the Prediction of Solar Radiation on Inclined Planes

Cited by 5 publications

References 0 publications

Validation of a 3D Local-Scale Adaptive Solar Radiation Model by Using Pyranometer Measurements and a High-Resolution Digital Elevation Model

Validation of a 3D Local-Scale Adaptive Solar Radiation Model by Using Pyranometer Measurements and a High-Resolution Digital Elevation Model

A novel time-effective model for daily distributed solar radiation estimates across variable terrain

Modeling zenith luminance on Madrid cloudless skies from illuminance on a horizontal surface

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