Guidelines and Applications of Daylight Metrics for Buildings in Thailand

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Awiroot Srisutapan

Abstract

Due to the limit of static daylight analysis method, daylight factor, dynamic daylight analysis method or climate-based daylight modeling, i.e., sDA, UDI, ASE, was introduced. The new metric has been widely used to predict daylight performance that relates to local weather data. With this condition, the evaluation criteria of the buildings in each location should be specified. The main focus of this research paper was the performance analysis of daylight metrics for building in the context of Thailand. The scope of the research is delimiting a study by one-sided opening, room dimensions, window-to-wall ratio, orientation, and Bangkok weather data. Simulation softwares were used throughout the research. The respresentative rooms were modeled by Rhinoceros 5. All cases were simulated and explored by Grasshopper and DIVA for Rhino v.4.1.0.8. The results of research showed that climate-based daylight analysis method was highly recommended to use instead because it can provide more varoiusly useful information than static method. Compared with the other metrics, the use of UDI, i.e., UDI-a and UDI-x, were suggested as the reasonable tool to assess daylight performance in building, in terms of quality and quantity. However, it is very especially important for researchers and architects to develope and optimize in the use of new metrics and criteria in Thailand.

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References

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