Statistical comparison of models for estimating solar radiation on inclined surfaces

Journal Article · Wed Jun 01 04:00:00 EDT 1983 · Proc. Annu. Meet. - Am. Sect. Int. Sol. Energy Soc.; (United States)

OSTI ID:5051536

Ma, C C.Y.; Iqbal, M

The objectives of this study are to compare statistically three models for estimating solar radiation on inclined surfaces and to recommend one that is general and accurate. The isotropic model, and Klucher's and Hay's anisotropic models are chosen for discussion. The hourly and daily formulations of these models are briefly described. Results show that they all produce large errors at steep slopes. The errors are minimum during the summer months. The isotropic model underestimates consistently throughout the year resulting in the worst performance. Hay's model also under-estimates constantly but by a smaller amount. Klucher's model overestimates in the summer and under-estimates in the winter, but can be considered just as general and accurate as Hay's Model for estimating insolation on inclined surfaces.

• Research Organization: Department of Mechanical Engineering University of British Columbia, Vancouver
• OSTI ID: 5051536
• Journal Information: Proc. Annu. Meet. - Am. Sect. Int. Sol. Energy Soc.; (United States), Journal Name: Proc. Annu. Meet. - Am. Sect. Int. Sol. Energy Soc.; (United States) Vol. 6; ISSN PMSID
• Country of Publication: United States
• Language: English

Related Subjects

14 SOLAR ENERGY
140100* -- Solar Energy-- Resources & Availability
AVAILABILITY
COMPARATIVE EVALUATIONS
FORECASTING
INCIDENCE ANGLE
INSOLATION
MATHEMATICAL MODELS
PROBABILISTIC ESTIMATION
RADIATIONS
SOLAR RADIATION
STATISTICAL MODELS
STELLAR RADIATION