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RESEARCH PAPERS

Evaluation of Different Radiation and Albedo Models for the Prediction of Solar Radiation Incident on Tilted Surfaces, for Four European Locations

[+] Author and Article Information
B. E. Psiloglou, C. A. Balaras

National Observatory of Athens, Institute of Meteorology and Physics of the Atmospheric Environment, P.O. Box 20048, GR 118 10 Athens, Greece

M. Santamouris, D. N. Asimakopoulos

University of Athens, Department of Applied Physics, Laboratory of Meteorology, Ippokratous 33, GR 106 80 Athens, Greece

J. Sol. Energy Eng 118(3), 183-189 (Aug 01, 1996) (7 pages) doi:10.1115/1.2870939 History: Received August 01, 1994; Revised November 01, 1995; Online February 14, 2008

Abstract

The diffuse radiation incident on an inclined surface is composed of both the sky diffuse radiation and the ground-reflected radiation. Depending on the model used to calculate the sky diffuse radiation and the estimated albedo value, it is possible to introduce a significant error in the prediction of the total radiation incident on a tilted surface. Twelve sky diffuse submodels associated with four different albedo submodels are used to estimate the total radiation on the tilted surface from data on the horizontal plane. The predicted total solar radiation values are compared with measured data on a south facing vertical surface, from four representative south and north European locations. Root mean square error, mean bias error, and a t-test are used to determine the intrinsic performance of each combination of diffuse tilt and albedo submodel. Accordingly, the various model combinations do not exhibit a statistically significant difference between measured and calculated values.

Copyright © 1996 by The American Society of Mechanical Engineers
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