The Open Construction & Building Technology Journal

ISSN: 1874-8368 ― Volume 13, 2019

Classification of Hong Kong Prevailing Standard Skies

The Open Construction and Building Technology Journal , 2008, 2: 251-256

D.H.W. Li, H.L. Tang

Department of Building and Construction, City University of Hong Kong, Hong Kong SAR, China.

Electronic publication date 10/10/2008
[DOI: 10.2174/1874836800802010251]

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In 2003, the International Commission on Illumination (CIE) adopted a range of 15 standard skies covering the whole probable spectrum of usual skies in the world. A good understanding of the sky luminance distribution is essential to daylighting developments and energy-efficient building designs. This paper studies the work on the identification of Hong Kong prevailing standard skies. Ten-minute data recorded between 1999 and 2005 in Hong Kong were used for the analysis. An approach to identify a subset of 6 sky standards including overcast, partly cloudy and clear sky types was proposed. The performance of the proposed approach was evaluated against the measured data in terms of root-meansquare error (RMSE). The statistical analysis showed that the proposed method produced acceptable agreements with the measured data and the overall RMSE was computed of 30%

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