Mean global radiation captured by inclined collectors at various surface azimuth angles in Nigeria

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Author list: Oladiran MT

Publisher: Elsevier

Place: OXFORD

Publication year: 1995

Journal: Applied Energy (0306-2619)

Journal acronym: APPL ENERG

Volume number: 52

Issue number: 4

Start page: 317

End page: 330

Number of pages: 14

ISSN: 0306-2619

Languages: English-Great Britain (EN-GB)

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Abstract

The use of solar energy is well established for low-grade thermal applications such as water heating and purification. In many of the solar systems, the collector surface located in the Northern Hemisphere faces the true south direction. However, there are occasions in which the radiation received by the collector at various orientations is desirable, such as a collector incorporated with a tracking system. The data for such situations are not available for several solar farms in Nigeria. Consequently, in this study, the average global radiation on flat surfaces was determined for three zones in Nigeria. The total insolation was obtained while the surface azimuth angle was varied between 0 degrees and 75 degrees at 15 degrees intervals. The results are presented for three inclinations of the collector surface, namely L - 10, L, and L + 10 degrees respectively.

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