공공건축물에서 외부차양을 통한 에너지 절감

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민준기 황태연
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Exterior shading Energy saving Solar radiation Public office building
This study aims to find out how much energy can be saved when an exterior shading is installed on a building. The results were proved by comparing with the average values of solar radiation transmittance such as the annual solar radiation, the monthly solar radiation and seasonal solar radiation through the distribution images of solar radiation in building. The results showed that the building energy could be saved per unit area of building. For the numerical analysis, 'Design Builder' was used as a computer simulation program. As a result, the optimal design for an exterior shading could be suggested to the louver with an angle of 30° and a width of 300mm. Based on these results, it was verified that the energy saving effect was above 3.75% by an exterior shading when this system was applied to Gwangju District Family Court that was the on of public office building.
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