Comparison of the Olmo model with global irradiance measurements on vertical surfaces at Madrid

Enrique Ruiz, Alfonso Soler and Luis Robledo

Energy, 2002, vol. 27, issue 10, 975-986

Abstract: The recently published Olmo model estimates global irradiance on inclined planes. It only requires the horizontal global irradiance and the sun’s azimuth and elevation as input parameters. As a consequence, it does not contain empirical coefficients that need determination for each location. Olmo and co-authors found a good agreement between predicted and experimental values obtained at their measuring site when a factor accounting for ground-reflected radiation was introduced in the model. In the present paper, the Olmo model is assessed in Madrid for vertical planes facing north, south, east and west. The model gives a root mean square error of ≅27%, when all data are used. With the data for the north-facing plane it becomes worse, i.e. ≅52%.

Date: 2002
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Persistent link: https://EconPapers.repec.org/RePEc:eee:energy:v:27:y:2002:i:10:p:975-986

DOI: 10.1016/S0360-5442(02)00013-0

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