建築開窗率對外殼節能影響之研究

The Impact of Windows-Wall-Ration on Building Energy-Saving

姚志廷(Jyh-Tyng Yau) ； 洪明瑞(Ming-Jui Hung) ； 戴政安(Cheng-An Tai)

《健康與建築雜誌》 1卷2期 (2014/02) Pp. 24-32

https://doi.org/10.6299/JHA.2014.1.2.R1.24

摘要

背　景：建築開窗率被視為影響建築耗能之重要因素之一，我國建築技術規則及綠建築評定基準對於建築開窗率均有規定，故不同情境下開窗率對建築耗能之真實影響，值得深入研究。目　的：本研究目的係分析開窗率對於建築耗能之影響，並探討不同影響因子（如建築區位、開窗方位等）之影響程度。方　法：以內政部建築研究所建置之節能實驗屋為研究對象，利用加拿大自然資源部所開發之軟體RETScreen進行開窗率之相關解析與模擬。結　果：以節能實驗屋為對象之解析結果顯示，在外殼隔熱性能優異，且使用一般清玻璃的情況下，開窗率對於建築耗能之影響確實非常顯著，開窗率從50%降低至20%，約可降低57%之空調耗能，在相同開窗率下，開窗於南北向相較於東西向，約可降低空調耗能的20%。在相同的開窗率下，台灣各個區域之耗能情形仍有顯著之差異，且區域的耗能差異，無法單純以建築緯度作為區分。結論／實務應用：開窗率對建築耗能之影響程度與開窗方向、基地位置等因素有關，建議相關開窗率法規可依不同條件作適度鬆綁。

關鍵字

開窗率 ； 節能減碳 ； 建築外殼節能

並列摘要

Background: Window-Wall-Ration is regarded as one of the important factors that influence energy consumption and carbon reduction of the buildings. In Taiwan, Building Code and Regulations and Green Building Evaluation Standards both set up relative rules of building's window-wall-ration. Actually, how building's energy consumption and carbon reduction is impacted by window-wall-ratio under different circumstances is worthy of our further research.Purposes: The purpose of this research is to analyze the influence of window-wall-ration on building's energy consumption and carbon reduction. Besides, we probe into the degree of its impact under different circumstances (e.g. building location, the direction to open windows).Methods: To conduct related analysis and simulation of window-wall-ration, we took the experimental house constructed by Architecture and Building Research Institute, Ministry of the Interior as the research object, and utilized software RETScreen developed by Natural Resources Department, Canada.Results: The analysis result of experimental house showed that window-wall-ration has remarkable influence on building's energy consumption, when the outer wall has excellent property of heat insulation, and general glass is used. It also showed that the window-wall-ration decreases from 50% to 20%, equaling to lowering about 57% of energy consumption of the air conditioner. With the same window-wall-ration, and in comparison to the east-west (EW) window opening direction, the north-south (NS) can lower about 20% of energy consumption of air conditioner. With the same window-wall-ration, we found that the energy consumption conditions in different regions still have significant differences. Additionally, we cannot determine energy consumption divergences simply in accordance with the architectural latitude.Conclusions: The influential degree of window-wall-ration on architectural energy consumption is associated with the direction to open window, building location, and etc. Consequently, we suggest properly streamline and relax relative rules and regulations for window-wall-ration on basis of different conditions.

並列關鍵字

Windows-Wall-Ration ； Energy Saving and Carbon Reduction ； Energy Saving for Building Envelope

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