提升空氣簾性能之分析研究

Analysis for Improving the Air Curtain Performance

10.29911/JEHVACE_NEW.202101_(125).0001

顏思典(Si-Dian Yan)；李魁鵬(Kuei-Peng Lee)；顏震宇(Zhen-Yu Yen)；林文祥(Wen-Hsiang Lin)；張凱强(Kai-Chiang Chang)

空氣簾 ； CFD ； 空氣滲透 ； 熱損失 ； Air curtain ； CFD ； Air infiltration ； Heat lost

冷凍空調&能源科技

125期（2021 / 01 / 10）

20 - 28

繁體中文

根據相關研究指出，在建築物中使用空氣簾作為前廳的替代方法，可為建築物節省空間與施工成本，並且空氣簾顯著降低了通過門的空氣滲透和能量損失。近年來，已有相當多的商店或賣場採用空氣簾以防止冷氣外洩或熱氣滲入室內，但因為空氣簾之節能效果會受到諸多環境因素、氣候因素、設計方法及使用條件而有所差異，使得使用者對於空氣簾節能技術應用產生疑慮。有鑒於此，本研究藉由現場調查及計算流體力學（Computational Fluid Dynamics, CFD）之模擬方法，進行實際案場空氣簾節能設計與效益之分析研究，研究案例之分析結果顯示當有外部風場造成空氣簾無法達成封閉效果時，若能適當提高氣簾出風速度可提升氣簾封閉效果，可提升約16.7%之節能效果；當空氣簾出風速度過大時，藉由適當調降出風速度可降低氣簾風機之耗能及冷氣洩漏，而獲得約40%之節能效果，節能效果顯著。

According to related studies, the use of air curtains in buildings as an alternative to the vestibule can save space and construction costs for buildings, and significantly reduce air infiltration and energy loss through doors. In recent years, quite a few shops or stores have adopted air curtains to prevent cold air from leaking or hot air from entering the room. However, the energy-saving effect of air curtains will vary depending on many environmental factors, climate factors, design methods, and use conditions, which make users have doubted about the application of air curtain energy saving technology. Therefore, this research use field surveys and computational fluid dynamics (Computational Fluid Dynamics, CFD) simulation methods to analyze the energy-saving design and benefits of air curtains in actual cases. The analysis results of the research case show that when the air curtain cannot achieve the closing effect due to the external wind field, if the air curtain velocity can be appropriately increased, the air curtain closing effect can be improved, and the energy saving effect can be increased by about 16.7%; when the air curtain velocity is too high, by appropriately reducing the air speed, the energy consumption of the air curtain fan and cool air leakage can be reduced, and the energy-saving effect of about 40% can be significantly obtained.

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