亮度評估模型應用於辦公室TAL照明之空間明亮感與節能研究

Luminance Evaluation Model Applied to Office TAL Lighting for Space Brightness Evaluation and Energy Saving

辦公室照明常採用全般照明均勻照亮空間，此種照明形式易造成能源過量消耗。在節能需求下，TAL照明形式已行之有年，雖具節能效果卻未能大量應用的原因，來自於過去對於空間陰暗的負面認知與誤解；欲在空間中感覺空間明亮，需透過具直觀性之視覺感受，現行研究多以受測者主觀評價進行探討，僅依靠水平面的照度亦難以呈現空間明亮感受。故本研究擬以松下電工提出之空間亮度評價指標為基礎應用於TAL照明設計，以DIALux照明設計軟體模擬，藉由相關因子分別探討TAL之最佳空間明亮感型式以及與節能之關連性。透過研究發現，本研究於設計階段在環境照明與作業面照明之照度分配上，透過田口法與SN比值進行分析，符合空間明亮感標準且照明用電密度低之最佳組合為環境照明200 lux搭配作業面照明300 lux，環境照明採用半間接照明將有助於提升空間明亮感並具節能功效。

 

Although commonly used to evenly illuminate spaces in offices, general lighting is relatively energy consuming. For many years, the task and ambient lighting (TAL) method has been implemented to meet energy-saving requirements; however, it was not widely applied in the past due to negative perceptions and misunderstandings regarding dark spaces. Therefore, this study adopted the space brightness index proposed by Panasonic and applied the lighting design software DIALux to perform simulation experiments. The methods used in this study can be applied during the design stage for estimating the perception of spatial brightness. In TAL design, The Taguchi method and signal-to-noise ratio analysis indicated that when applying the TAL method, the most suitable illuminance values are 200 and 300 lux for ambient and task lighting, respectively. Semi-indirect lighting illuminance distribution for ambient lighting enhances the perception of spatial brightness and increases energy saving.