Validation of models for global irradiance on inclined planes

Journal Article · Wed Jan 01 00:00:00 EST 1992 · Solar Energy (Journal of Solar Energy Science and Engineering); (United States)

DOI:https://doi.org/10.1016/0038-092X(92)90177-C· OSTI ID:5924316

Feuremann, D; Zemel, A ^[1]

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1. Ben-Gurion Univ. of the Negev, Sede Boqer (Israel)

The accuracy of models to estimate irradiance on inclined planes is tested by comparing the predictions to measurements taken with four instruments of various tilt and azimuth angles in Sede Boqer, Israel. The three models investigated are: the Perez model, Hay's anisotropic model, and the isotropic model. The Perez model is found to perform significantly better than the other two, with residual errors that are comparable to the accuracy of the measuring instruments themselves. The same data are also used to evaluated the precision of empirical correlations to estimate the direct component from global horizontal radiation, and to assess the sensitivity of the predicted irradiance on tilted surfaces to the errors associated with these correlations.

• OSTI ID: 5924316
• Journal Information: Solar Energy (Journal of Solar Energy Science and Engineering); (United States), Vol. 48:1; ISSN 0038-092X
• Country of Publication: United States
• Language: English

Related Subjects

14 SOLAR ENERGY
SOLAR RADIATION
AVAILABILITY
ACCURACY
CORRELATIONS
INSOLATION
MATHEMATICAL MODELS
SOLAR COLLECTORS
VALIDATION
EQUIPMENT
RADIATIONS
SOLAR EQUIPMENT
STELLAR RADIATION
TESTING
140100* - Solar Energy- Resources & Availability