| Summary: | 碩士 === 國立勤益科技大學 === 機械工程系 === 103 === This study investigats the characteristics of a light-guide using water as the media and a steel pipe was use to contain the water so that loss of light energy was lowered. Commercial software, LightTools, was used to determine the optical properties and energy loss of the water pipe. The result indicated that the simulation average illuminance for straight pipe with water was 131,976 Lux, and the experiental value was 131,200 Lux; a 0.59% error was observed; for bent pipe with water the simulation average illuminance was 10,156 Lux, and the experiental value was 9,230 Lux; a 10.03% error was observed. The results suggested that the simulation was acceptable. Finally design and simulation of an indoor lightware was implemented. The simulation result of average illuminance for empty steel pipe was 28 Lux, whereas for steel pipe with water the average illuminance was 869 Lux, a 29-fold improvement was observed. The result of this study indicated that water as the light-guide media for indoor lighting offers dual benefits of low cost and practicality.
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