臺灣冬季受東北季風影響，PM₂.₅ 高濃度事件頻繁，對校園師生健康構成潛在威脅。本研究旨在探討綠簾系統（Green Curtain System, GCS）作為校園PM₂.₅ 濃度改善的自然解決方案之效益，並提出其於臺灣校舍環境的合適配置策略 。
研究方法首重建立一個可信的GCS對於PM₂.₅ 吸附之物理模型，此模型透過計算流體力學（CFD）數值模擬，並結合前期於成功大學六樓陽台實測的風速及PM₂.₅ 濃度數據進行比對與驗證。此驗證模型進一步整合了植栽對氣流的阻力效應與污染物沉積機制，確保模擬的物理合理性。
接著運用此模型針對臺灣地區常見的三種圍塑型國小校舍（Type A、B、C）進行模擬分析，深入探討建築中庭的高寬比以及主導風向對綠簾PM₂.₅ 吸附效率的影響。模擬結果指出，H/L比與綠簾安裝樓層及建築物座向為影響PM₂.₅ 吸附效率的主要因子。當H/L比小於0.2時，校舍中庭較為開闊，氣流可直接穿透，故綠簾安裝於迎風面可直接攔截外部PM₂.₅ ，效益較佳；而當H/L比大於0.2時，狹窄中庭易形成氣流回流或滯留區，導致PM₂.₅ 於背風側累積，此時綠簾設置於背風側高樓層的減緩效益最為顯著。此外，多中庭校舍在H/L值較高時，其吸附效益隨之提升，且後棟相較前棟吸附效果更佳。
研究亦進一步選取臺北、臺中、臺南、高雄四所實際國小案例進行應用模擬，評估綠簾在不同方位、樓層與綠覆率下的實際防護效益。案例分析證實，綠簾系統能有效降低校園PM₂.₅ 濃度，尤其在高背景濃度地區，儘管達到WHO標準的空間比例較低，但其PM₂.₅ 吸附量仍具顯著的改善效益，研究亦發現，對於H/L比高的校舍，即使降低綠簾覆蓋率，PM₂.₅ 吸附效益的減損幅度也相對平緩，提供了成本效益的考量彈性。
本研究確立了GCS作為校園空氣品質改善的有效策略，並提供了基於CFD模擬的具體設計建議，研究成果可作為未來校園規劃參考，協助依據各地氣候條件、建築形態及風場特性佈設綠簾系統，以營造更為健康、環境友善且可永續發展的學習環境 。

Taiwan often experiences elevated PM₂.₅ levels during winter due to the northeast monsoon, posing health risks to students and staff in school environments. To address this issue, this study adopts Green Curtain Systems (GCS) as a Nature-based Solution. A reliable plant adsorption model was developed by combining Computational Fluid Dynamics (CFD) simulations with field measurements.
Wind speed, wind direction, and PM₂.₅ concentration data were collected from a sixth-floor balcony at National Cheng Kung University over multiple seasons. These data were used to construct and validate the CFD-based plant adsorption model. The validated model was then applied to simulate typical enclosed elementary school buildings in Taiwan. The analysis focused on how height-to-length (H/L) ratios, building orientations, and prevailing wind directions affect the performance of GCS.
Results showed that both the H/L ratio and the placement of GCS relative to wind direction were key factors influencing PM₂.₅ removal efficiency. Installing GCS on upper floors facing the leeward side achieved the best results due to airflow separation within the courtyard. Overall, the analysis demonstrated that GCS can effectively improve air quality when adjusted to local environmental conditions. This study suggests that future school planning should consider wind patterns and building form when deploying GCS to improve healthy and environmental quality.

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