臺灣能源期刊第3卷第3期-臺灣能源期刊論文全文-能源期刊-能源知識庫

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臺灣能源期刊論文全文

出刊日期：September, 2016

Title: The Effect of Window- to-Wall Ratio and the Glazing on the Total Energy Efficiency of A Commercial Building in Tainan

摘要: 商辦建築為公認的耗能建築，尤其照明與空調用電佔整體用電之大宗。商辦建物安裝節能玻璃可減輕冷房的熱負荷，另一方面以自然採光代替照明可減少照明負荷。安裝節能玻璃是常見之降低冷房負擔的方法，然節能玻璃常不具高度可見光穿透率，與採光節能互相牽制。本研究以模擬的方法探討臺南地區一高度照明使用的商辦建物，其節能玻璃與採光配置的優先順序，以達照明加冷房用電的最佳整體節能效率。建物室內以自然採光搭配自動控制照明系統作採光節能；節能玻璃方面以數種不同特性之玻璃與採光節能搭配進行比較；百葉窗的影響亦納入比較。本研究結果，窗牆比在0.08~0.64的範圍內，以採光節能為優先；當窗/牆比高於0.2，應當進一步使用有效隔絕太陽輻射熱能力之節能玻璃；使用可見光透光度74.4%且SHGC 0.489之節能玻璃，在此窗/牆比之內，整體節能效率達24.77~48.21%。

Abatract: Commercial Buildings are known as high energy consuming sectors. Using proper energy efficient glazing can reduce interior cooling loads for the air-conditioning. Employing daylight can save the artificial lighting energy. However energy efficient glazing usually oppose to daylighting for their low visible transmittance. This study conducted a simulation to investigate the priority of solar heat rejection of the glazing and the daylighting for a highly lighting demanding commercial building in Tainan to get the best total energy saving benefit in the lighting and cooling energy. The lighting system linearly adjusts the lights to meet the illumination requirement as the daylight energy saving method. Several energy efficient glazing were used and compared in conjunction with the daylighting. A window blind was also included for comparison. In conclusion, for window to wall ratio (WWR) of 0.08~0.64, the daylight energy saving has the priority. And for WWR > 0.2, glazing with effective low solar heat gain are to be employed in advance. Using a glazing with visible transmittance of 74.4% and SHGC of 0.489 are able to reach a total efficiency of 24.77~48.21% over the WWR of 0.08~0.64.