Hourly global and diffuse radiation of Lagos, Nigeria-correlation with some atmospheric parameters

Journal Article · Tue Mar 01 04:00:00 EST 1994 · Solar Energy (Journal of Solar Energy Science and Engineering); (United States)

DOI:https://doi.org/10.1016/0038-092X(94)90491-X· OSTI ID:7275583

Chendo, M A.C.; Maduekwe, A A.L. ^[1]

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1. Univ. of Lagos, Akoka (Nigeria)

The influence of four climatic parameters on the hourly diffuse fraction in Lagos, Nigeria, has been studied. Using data for two years, new correlations were established. The standard error of the Liu and Jordan-type equation was reduced by 12.83% when solar elevation, ambient temperature, and relative humidity were used together as predictor variables for the entire data set. Ambient temperature and relative humidity proved to be very important variables for predicting the diffuse fraction of the solar radiation passing through the humid atmosphere of the coastal and tropic city of Lagos. Seasonal analysis carried out with the data showed improvements on the standard errors for the new seasonal correlations. In the case of the dry season, the improvement was 18.37%, whole for the wet season, this was 12.37%. Comparison with existing correlations showed that the performance of the one parameter model (namely K[sub t]), of Orgill and Hollands and Reindl, Beckman, and Duffie were very different from the Liu and Jordan-type model obtained for Lagos.

• OSTI ID: 7275583
• Journal Information: Solar Energy (Journal of Solar Energy Science and Engineering); (United States), Journal Name: Solar Energy (Journal of Solar Energy Science and Engineering); (United States) Vol. 52:3; ISSN SRENA4; ISSN 0038-092X
• Country of Publication: United States
• Language: English

Related Subjects

14 SOLAR ENERGY
140100* -- Solar Energy-- Resources & Availability
99 GENERAL AND MISCELLANEOUS
990200 -- Mathematics & Computers
AMBIENT TEMPERATURE
CORRELATIONS
DIFFUSE SOLAR RADIATION
EARTH ATMOSPHERE
FORECASTING
HUMIDITY
MATHEMATICAL MODELS
MULTI-PARAMETER ANALYSIS
RADIATIONS
SOLAR FLUX
SOLAR RADIATION
STELLAR RADIATION
VARIATIONS