A Study of the Performance of Horizontal & Egg-crated Shading Device of Direct Daylight

• Main Authors: Shih, Horng-Jye, 石宏杰
• Other Authors: Prof. Chou, Chia-Peng
• Format: Others
• Language: zh-TW
• Published: 1999
• Online Access: http://ndltd.ncl.edu.tw/handle/42844780920989540075

碩士 === 淡江大學 === 建築學系 === 87 === The purpose of this thesis is to discuss the daylighting performance of buildings in the direct solar radiation by horizontal & egg-crated shading devices. Daylighting is composed of direct and diffuse daylight. The studies of diffuse daylight have been sustained a long time in Taiwan, but the research on the direct sunlight is seldom in the state of art. Therefore the research is to find the better combinations of horizontal & egg-crated shading devices by the scale model experiments outdoor. And as a result to provide the designer''s reference on the energy conservation of building design. This study includes the following content: 1. These locations of the sun in the sky change because of the changing time, so the paths that the direct solar radiation penetrate into the room changing by the time. Therefore we can find the both relative solar azimuth and altitude have much influence upon the results in many aspects. 2. The impact of influence for different daylighting and shading coefficient factors and average uniformity have been analyzed. The priority of influence among those factors is being made. To assist designers to meet their daylighting and shading requirements. 3. With the daylighting performance in the different conditions of opening and the ratio of sunshade''s depth and shading device style and relative solar position, we can find the better combinations of shading device have been found. 4. The data of scale model tests under designed combinations have been analyzed. The regression models are being built for predicting different situations. With the assistance of the computer technology, the data bank and the model of regression equation have been built. These results of the analysis will help the designer realize the efficiency of daylight in different solar angle. The results can be expected to assist designers in their energy conservation of architecture design.