A Study of 15 Sky Luminance Patterns against Hong Kong Data
- 1 March 2003
- journal article
- research article
- Published by Taylor & Francis in Architectural Science Review
- Vol. 46 (1), 61-68
- https://doi.org/10.1080/00038628.2003.9696965
Abstract
A good knowledge of the sky luminance distribution is essential for efficient day lighting designs and developments. This paper studies a set of 15 standard skies established by Kittler, Perez and Darula using the measured sky luminance data from subtropical Hong Kong. A statistical analysis of the results has shown that the standard sky set is adequate to cover the various sky conditions. A reduction of the standard set to five skies is sufficient to model the luminance distributions. The ratio of zenith luminance to horizontal diffuse illuminance (L/zD) which can be used to define homogeneous sky standards was analysed based on these five selected skies. It has been shown that the trend of L/zDv ratios under different sky types followed the ranges described by Kittler et al.Keywords
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