研究生: |
阮德英 Duc-Anh Nguyen |
---|---|
論文名稱: |
中庭自然通風應用於集合住宅之研究 Natural Ventilation inside Courtyard – Apartment Building |
指導教授: |
江維華
Wei-Hwa Chiang |
口試委員: |
林葳
Wei Lin 邱韻祥 Yun-Shang Chiou |
學位類別: |
碩士 Master |
系所名稱: |
設計學院 - 建築系 Department of Architecture |
論文出版年: | 2012 |
畢業學年度: | 100 |
語文別: | 英文 |
論文頁數: | 87 |
中文關鍵詞: | 自然通風 、中庭 、浮力效應 、浮力通風 、CFD 、熱濕氣候 |
外文關鍵詞: | Natural ventilation, Courtyard, Buoyancy effect, Stack ventilation, CFD simulation, Hot-humid climate |
相關次數: | 點閱:290 下載:11 |
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本研究主要利用CFD模擬軟體(PHOENICS/FLAIR)評估具中庭高層集合住宅之設計與環境影響因子,進而檢視中庭空間提供之浮力通風效益。評估對象為位於亞熱帶台灣之高層集合住宅,各住宅單元之內部熱源與屋頂構造接受之日射為驅動浮力通風之主要力量。模擬結果得到明顯的非線性梯度之溫度與風速,並且可在中庭頂端得到最大的風速與最高的溫度。當外風場風速小於或等於0.5m/s時,所產生之氣流量足以移除大多數使用空間產生的熱量,有效地將熱空氣經中庭上方排出,但近屋頂之樓層空間仍需做進一步處理。搭配日射加熱屋頂構造物之模擬結果亦可發現,當地面層配置迎風向的小開口時,可以得到最高的通風效益,在中庭頂端之風速可提升約38%。
Natural ventilation enhanced by buoyancy force of an indoor courtyard space was examined. A high-rise residential building located at subtropical Taiwan was studied in terms of heat evacuation. CFD software PHOENICS/FLAIR was employed to investigate the effects of design factors as well as environmental factors that were tested in sequences. The buoyancy force was mainly induced by the heat generated inside individual apartment units and a heated roof top space due to solar radiation. The gradient of air temperature and velocity in the courtyard space against height is non-linear and high values of gradient are found particularly near the top. The flow flux is generally large enough to remove heat from most of the occupied spaces. Except for the upper floors that may need further treatments, the air can be effectively evacuated through the top of the courtyard when the wind velocity is roughly 0.5 m/s or smaller. With a heated roof-top structure, the ventilation efficiency can be strengthened by bottom openings on the windward side that yields 38 % more velocity at the top of the courtyard than the worse case.
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