Research on the effect of the window glass on glare inhibition and the property of permitting a view

• Main Authors: Yu-Ling Lin, 林昱伶
• Other Authors: Ming-Yeh Hsieh
• Format: Others
• Language: zh-TW
• Published: 2012
• Online Access: http://ndltd.ncl.edu.tw/handle/41021869817110115837

碩士 === 中原大學 === 建築研究所 === 100 === Windows are the main lighting equipment of a building. “Lighting” is the most important function of windows. The transmitted window glass allows daylight radiates into indoor, reducing the using of artificial light, which has great contribution to saving lighting energy. However, on the other hand, the daylight comes in from the window is often too bright to have glare problems. Besides “lighting,” “view seeing” is another function of windows. Today, due to considering the light and heat environment, window glasses have many process procedures to create different “color,” “luminousness,” and “reflectivity.” However, when the luminousness of window glasses lowers, the clearness of the scenery, brightness, and clearness must be influenced. To sum up, “glare restraining” and “view seeing” have close relationship with indoor environment quality. This research uses window glasses as discussion subject to explore the characteristic and quantitative relationship between “glare restraining” and “view seeing.” In glare restraining, this research used 1:10 reduced scale model in place of 1:1 full size space. The measurement experiment of indoor brightness was carried out with reduced scale model. The indoor window brightness and background brightness were measured with instruments. The data figure was substituting into the UGR formula, the glare index, stipulated by CIE, to have further discussed. The differences of the glare under different window glasses, window open rate, window open direction, and sun track in indoor. The evaluation of view seeing involves with psychological and subjective sense of sight, which cannot be measured through instruments. Therefore, this research adopted subjective evaluation questionnaire to proceed with the experiment. The static and dynamic images were being evaluated, and compared the view seeing degree sensed by the respondents in different window glasses with quantitative data. This research evaluated glare restraining and view seeing with different kind of glass. The followings are the conclusions. （1）Transparent glass has the highest index in light source brightness, background brightness, and UGR glare index; reflective glass (silver) has the lowest. The more transparent a glass is, the URG glare index indoor is higher. （2）The northern windows have better brightness than southern windows. Although northern windows have no direct light, its glare degree is more serious than southern window with direct light. From this we can see that the glare problem caused by the reflective light from the northern neighboring buildings is more serious than southern buildings. Viewing from the angle of nature light, southern windows can choose high transparent glass to increase nature indoor light, not exceeding glare standard at the same time. The northern windows can choose low transparent glass to restrain glare. （3）Colored glasses (green) have the best performance on every item of the questionnaire. It is inferred that this has something to do with the scenery type chosen. Besides using surrounding buildings, this research used many green plants. Just like the filter effect in photography, colored glasses (green) might just have strengthened the color effect of the green plants. Therefore, they have the best evaluation.