Solar radiation on inclined surfaces

Journal Article · Mon Jan 01 00:00:00 EST 1990 · Solar Energy (Journal of Solar Energy Science and Engineering); (USA)

DOI:https://doi.org/10.1016/0038-092X(90)90062-H· OSTI ID:6344040

Gopinathan, K K ^[1]

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1. National Univ. of Lesotho (South Africa)

Measured solar radiation data for one location in Lesotho is used to test the applicability of two theoretical models for computing total solar radiation on inclined surfaces. The models selected for discussion are the isotropic model suggested by Liu and Jordan and the anisotropic model by Hay. The models are compared and tested for their applicability to locations in Lesotho and Southern Africa in general, on the basis of statistical error tests. A comparative study of the models shows that both the models are equally accurate for stations in Lesotho. The isotropic model is then used to estimate total radiation for five other locations on north-facing surfaces of various tilt angles, and the results are presented.

• OSTI ID: 6344040
• Journal Information: Solar Energy (Journal of Solar Energy Science and Engineering); (USA), Vol. 45:1, Issue 1; ISSN 0038-092X
• Country of Publication: United States
• Language: English

Related Subjects

14 SOLAR ENERGY
SOLAR COLLECTORS
INCLINATION
SOLAR RADIATION
MATHEMATICAL MODELS
ANISOTROPY
ANNUAL VARIATIONS
EVALUATION
FORECASTING
GLOBAL ASPECTS
ISOTROPY
OPACITY
PERFORMANCE TESTING
SOUTH AFRICA
AFRICA
EQUIPMENT
OPTICAL PROPERTIES
PHYSICAL PROPERTIES
RADIATIONS
SOLAR EQUIPMENT
STELLAR RADIATION
TESTING
VARIATIONS
140100* - Solar Energy- Resources & Availability