Abstract
IT is interesting to compare Dr. H. Heywood's proposed presentation of solar radiation data1 with a method developed at this Station2. This method makes the simplifying assumption that the diffuse sky radiation is uniformly distributed, except in the vicinity of the Sun where the radiance is known to be higher. The additional ‘circumsolar diffuse’ radiation from this region of the sky is regarded as augmenting the direct radiation, giving as a convenient basis for analysis a division of the total incident radiation into ‘uniform background diffuse’ and ‘augmented direct’ components.
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References
Heywood, H., Nature, 204, 669 (1964).
Loudon, A. G., and Danter, E., Build. Sci., 1, 89 (1965).
Petherbridge, P., Building Res. Sta. Current Paper, Research Ser. No. 39 (1965).
Parmelee, G. V., A.S.H.V.E. Trans., 60, 341 (1954).
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LOUDON, A., PETHERBRIDGE, P. Solar Radiation on Inclined Surfaces. Nature 206, 603–604 (1965). https://doi.org/10.1038/206603a0
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DOI: https://doi.org/10.1038/206603a0
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