日射量を用いたCIE標準一般天空の天空タイプ推定手法に関する研究

概要

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In this paper, by using the sky luminance distribution model of the CIE standard general sky in place of the measured sky radiance distribution, the authors propose the method of identifing the sky types of the CIE standard general sky using values of horizontal global sky radiation (Eeg), normal direct solar radiation (Ees), without measuring the sky radiance distribution which is measured rarely. 1) The sky type of CIE standard general sky is determined by the set of parametrised Gradation and Indicatrix functions. So, to identify the set of parameter values of Gradation function and that of Indicatrix function, the regression curves are fitted to the correlation between the sun's height and Eeg in Gradation functions and the correlation between Ees and Eed in Indicatrix functions respectively in each sky types. 2) Using the relation between the fitted regression curves and the sun's height and i) Eeg in Gradation function, and ii) Ees in Indicatrix function, the set of parameter values of Gradation function and that of Indicatrix function are identified. By the each set of parameter values of two functions, the sky type is identified. And, using the sky radiance distribution of the identified sky type, the vertical irradiance values are calculated.
社団法人日本建築学会の論文
2006-11-30