| Summary: | 碩士 === 樹德科技大學 === 應用設計研究所 === 91 === Because of the characteristic of subtropical climate in Taiwan, abundant daylight can work very well energy savings in lighting. The research follows the following topics “light environment”, “energy”, and “health” to develop the sun-shading and light-introducing panels that can improve lighting quality and to use the free nature resources effectively that can decrease the dependency on artificial illumination. The research takes the environment of the Single-sided Day-lighting classroom into account, uses the digital analysis of Lightscape visualized simulation, cooperates with laboratory empirical data, checks and proves the indoor illumination, and sets up objective evaluating approaches and tools to predict the effect which the sun-shading and light-introducing panel improve lighting quality in the classroom.
Our major findings were as below：
1. The research adopts the skill of visualized numerical analysis, and processes the simulation of light environment illumination. For different indoor fabric figures of construction space, it adopts diffuse daylight availability model analysis, and calculation figures of Ray Tracing and Radiosity to simulate indoor light energy. Besides, for the space diorama, geographic location, and the numerical analysis of material reflectance scale and transmission, it establishes the reasonable setting proceedings and parameter setting, guarantees the stability of numerical simulation, and matches the lab empirical data. All of them show that the distribution of indoor illumination consists with physics numerical; this can be proposed to be a tool during the design period to predict the light and daylighting.
2. As for the environment of subtropical climate in Taiwan, from the laboratory empirical data and simulation analysis, we find that under the circumstance of abundant daylight, when the Single-sided Day-lighting classroom uses daylight, the average uniformity will get lower because direct daylight will make the distribution of indoor luminance insufficient. So users often give up using daylight for lighting quality. However, the documents show that daylight has the advantages to improve lighting quality and to increase students’ studying ability and efficiency. Therefore, the design of classroom illumination should follow the assumption of lighting indication to let daylight enter indoors.
3. This research the sun-shading and light-introducing panels makes use of reflection to turn direct daylight into diffuse daylight, which can develop indoor average uniformity and improve light environment. Its least average uniformity hits 0.30, and the highest one can hit 0.45. The average uniformity gets lower than the standard one 0.5; however, compared to general visors, the improvement of the sun-shading and light-introducing panels in this research is much better. On the assumption of the evaluation of lighting environment for classroom, it adopts the approach of single artificial lighting; the eclectic case is better than the demand of the evaluation of lighting environment for classroom in clear sky and partly cloudy sky and can decrease the original 35% artificial lighting energy in the daytime.
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