SET Proceedings 2978-4387 Caravel Press 10.65582/set.2008.255 2008.255 Evaluation of Daylight and Electrical lighting Performance in an Office Space KimKang-Soo kskim@korea.ac.kr LeeJeong-Sub deadplace@korea.ac.kr JungHoe-Young mrjim@korea.ac.kr ChoSung-Haeng Chosh23@samoo.co.kr Dept. of Arch. , Korea University, Seoul, Korea Samoo Architects & Engineers, Seoul, Korea 24082008 7 1 978-1-995850-08-5 1836 1843 24 August 2008 © 2008 Copyright WSSET 2008

In this research, lighting performance was compared with actual measured data in a case study of an office area. Various design alternatives were then analyzed in a model of the case study in order to determine the optimum conditions for saving lighting energy and improving illuminance uniformity. Requirements from LEED 2.1 & 2.2 and CASBEE were used as indexes for the evaluation. Results showed that in Case 4 (WWR: 60%, TR: 44%, OH: 150cm), direct sunlight can be controlled near the window area, satisfying the LEED 2.2 requirement. In addition, in Case 2 (WWR: 34%, TR: 82%), where 2 light fixtures near the window were switched off, optimum lighting levels and illuminance uniformity were obtained at noon on the equinox.

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