| Summary: | 碩士 === 國立成功大學 === 建築學系碩博士班 === 99 === Introduction
Over-sized openings of buildings would lead to the heat gain of interior environment and increase the air-conditioning load; however, the sun shading system, which could decrease the extra light and heat in the indoor environment, might obstruct the ventilation, lighting and view. An optimal sun shading design should prevent the heat gain of the indoors, and an appropriate lighting use could reduce the lighting loads. Therefore, the issue of this paper is to shade the direct lighting from the sun and to maintain effective lighting use at the same time.
Objectives
Sequence-controlled sun shading installation focuses on the reduction of the heat gain and introduction of the most sun light. The sun shading system in this study is horizontal activated aluminum louvers window which was easily obtained locally. The angle of the louvers window was adjusted by the geographical locations and times. The data from the experiments could put into the equation from the study to get the height alteration of sun. The objectives are as following:
1.the effect of illumination environment by the sequence-controlled louver.
2.the effect of thermal environment by the sequence-controlled louver.
3.the efficiency of indoor lighting and air-conditioning by the sequence-controlled louver.
4.the possibility of the timing controlled system applied to outer sun shading at the openings of buildings.
Methods
The experimental standard of outdoor environment was based on the value of sun lighting and temperature measurement outside of the full-scale chamber room during the sunny sky condition. The illumination and the temperature measurement inside the full-scale chamber were tested for the discussion of the illumination and thermal environment; practically recording the lighting and the electrical consumption was for the energy-saving efficiency.
Results
The results show that the sequence-controlled louver applied to openings is an efficient application for indoor thermal comfort and energy-saving. Regarding the illumination environment, it could reduce the indoor illumination and daylight rate.The sequence-controlled louver at the southern side, compared to the fixed blinds, could save 8% power consumption, and the one at the western side could save 13.8%.
The future studies are suggested to carry out the factors regarding improvements of the blinds’ materials and shapes for enhancing the indoor lighting comfort to both reduce the a/c load and maintain the illumination environment quality.
|
|---|
