Título:
Albedo influence on the performance of solar transposition models
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Autor:
Piccioli, Inti
Laguarda, Agustín
Abal, Gonzalo
Laguarda, Agustín
Abal, Gonzalo
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Tipo de documento:
Preprint
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Palabras clave:
Tilted solar irradiance
Global horizontal irradiance
Surface albedo
Transposition models
Solar resource assessment
Global horizontal irradiance
Surface albedo
Transposition models
Solar resource assessment
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Año de publicación:
2025
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Resumen:
Accurately estimating solar irradiance on tilted surfaces is essential for the performance assessment and
optimization of solar energy systems. This work evaluates the accuracy and sensitivity to surface albedo
assumptions of five widely used transposition models when estimating solar irradiance on tilted surfaces.
Using high quality data from a site in Golden, Colorado, we assess model performance for the diffuse
component of global tilted irradiance (GTI), defined as the sum of in-plane and reflected irradiance on the
tilted surface by calculating the relative mean bias deviation (rMBD), the relative root mean square deviation
(rRMSD), and the combined metric U95. Then we evaluate sensitivity and robustness of the models for
different surface albedo choices. Results indicate that the Hay-Davies and Reindl models exhibit greater
robustness to variations in albedo, maintaining consistent accuracy, while the Perez and Temps-CoulsonKlucher models are more sensitive to inaccurate albedo assumptions. However, these two models are the
most accurate when the true measured albedo is used. The isotropic assumption for the diffuse component
(referred to as the isotropic model), while robust, systematically underestimates GTI and is therefore not
recommended for precise aplications.
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Citación:
Piccioli, I., Laguarda, A. y Abal, G. Albedo influence on the performance of solar transposition models [Preprint] Publicado en : ISES Solar World Congress 2025 (SWC2025) Proceedings. International Solar Energy Society. Nov. 3 - 7, 2025, Fortaleza, Brazil. doi://10.18086/swc.2025.04.01
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Licencia Creative Commons Atribución - No Comercial - Sin Derivadas (CC - By-NC-ND 4.0)
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| Ficheros | Descripción | Tamaño | Formato | ||
|---|---|---|---|---|---|
| PLA25.pdf | Preprint | 870.87 KB | Adobe PDF |