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Yilsik, Cho; Byoungsoo, Kim. Analysis of the indoor daylight performance of a light-shelf system. 2005 SOLAR WORLD CONGRESS, 2005, Orlando, Flórida.
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Citações: 2
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Dados do autor na base InfoHab:
Número de Trabalhos: 1 (Nenhum com arquivo PDF disponível)
Citações: Nenhuma citação encontrada
Índice h: Indice h não calculado  
Co-autores: Nenhum co-autor encontrado

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Abstract

According to the recent report, the lighting energy consumption of commercial buildings reaches to 30%~40% of the total energy consumption in Korea. It is more than that of cooling energy consumption and it is the major target of energy-saving strategy. It is obvious that they are interested in Daylighting device such as Light-shelf for the purpose of raising the lighting energy-saving efficiency. In most of highly developed countries, a thorough study on Lightshelf makes it possible to propose a practical plan, while at home there leaves much to be desired to study a guiding principle of optimum plan in spite of its efficiency based on experiments using the scaled model and analysis of simulation. Aiming at making an optimum plan of Light-shelf suitable for the domestic situation, this study is worked by experiments using light-shelf and analysis of variables parameters using illumination program. The experiment is to analyse the efficiency of Light-shelf on condition of the sky and the parameters analysis is to make the simulation using illumination program. This study is composed of 1) the analysis of light with some variables parameters such as presence of light-shelf and degree of angle using 1/2 scaled model 2) making the simulation using Lightscape, illumination program. In brief, concerning presence of light-shelf, it causes little difference in its efficiency in the overcast sky, whereas it decreases an illuminance of window side and provides inner side with the light, which decreases the ratio of the maximum to the minimum inner illuminance and makes the inner of illuminance to range evenly in the clear sky. On degree of angle, as the daylight increases in proportion of degree of angle, the ratio of the maximum to the minimum inner illuminance decreases, which makes it possible to increase the proportion of inner daylight.
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