• 沒有找到結果。

第四章 結論與建議

第二節 建議

由於都市點源式廢氣排放對建築周圍環境之影響之系統性組合可區分為三 種:(1)廢氣點源排放於單一建築物,污染在建築物遭周環境之擴散影響;(2) 廢氣點源排放於前後(tandem)與相鄰(side by side)雙建築物型式之建築物,污 染在建築物遭周環境之擴散影響;(3)廢氣點源排放於規則(regular)與交錯 (stagger)建築群排列型式之建築物,污染在建築物遭周環境之擴散影響。本年 度已完成針對第一種狀況執行研究;因此若要獲得該問題進一步更完整之研究分 析,建議下一年度應針對第二種狀況繼續進行風洞實驗研究。

此外在本年度進行風洞實驗工作實務時,遭逢一些問題,雖已暫時已臨時方 式克服,但建議實驗室將來可針對風洞部分設施調整之改進如下,以利爾後執行 相關風洞擴散實驗更為便利與順暢。

建議一

立即可行建議

主辦執行機關:內政部建築研究所 協辦單位:無

目前風洞實驗段內部地表面之污染源設置位置只預留一處,對於未來若進行 不同污染排放源位置,將無可調整改變之彈性。為了使得未來風洞實驗室得

以進行更為廣泛相關污染擴散實驗研究,建議日後於風洞實驗段內部地表面 可改良之,並預設多處污染排放源位置,用以因應不同排放佈置之實驗條件 之研究案。

建議二 中長期建議

主辦執行機關:內政部建築研究所 協辦單位:無

量測建築物本體濃度擴散時,須將諸多量建築物表面測點之接管引出,但風 洞試驗段地表面皆全圍鋼鐵構造,很難因應該等擴散實驗,彈性開孔以利引 出濃度採樣管線。建議日後於風洞實驗段內部地表面可改良之,某些區段將 鋼鐵地表面改為合板地表面,相較易於彈性設置開孔,以配合實驗時進行濃 度採樣管線之佈置。

參考書目

[1] Hanna, S.R., Tehranian, S., Carissimo, B., MacDonald, R.W., and Lohner, R., (2002), “Comparison of Model Simulations with Observations of Mean Flow and Turbulence within Simple Obstacle Arrays,” Atmospheric Environment, Vol.36, pp.5067-5079.

[2] Mavroidis, I., and Griffiths, R.F., (2001) “Local Characteristics of Atmospheric Dispersion within Building Arrays,” Atmospheric Environment, Vol.35, pp.2941-2954.

[3] Mfula, A.M., Kukadia, V., Griffiths, R.F., and Hall, D.J., (2005) “Wind Tunnel Modeling of Urban Building Exposure to Outdoor Pollution,” Atmospheric Environment, Vol.39, pp.2737-2745.

[4] Shiau, B.-S., and Lin, Y.-S., (2007), “Measurements on the Dispersion of Pollution in Urban Environment of Cubic Building Arrays with Different Wind Directions,”

Proceedings of International Workshop on Physical Modeling of flow and Dispersion Phenomenon, pp.135-141, Orleans, France.

[5] Shiau, B.-S., and Tsai, B.-J., (2009), “Wind Tunnel Test on the Flow and Dispersion of Airborne pollutants in the Complex Terrain of Coastal Region of ShieHe Power Plant of Taiwan,” Proceedings of the 7th Asia and Pacific Conference on Wind Engineering, pp. 505-508, Taipei, Taiwan.

[6] Shiau, B.-S., Tsai, B.-J., and Lin, X.-Z., (2009), “Experimental Study on the Wind Flow and Dispersion around Hill with Various Slopes,” Proceedings of the 7th Asia and Pacific Conference on Wind Engineering, pp. 509-512, Taipei, Taiwan.

[7] Shiau, B.-S. and Chang, W.-C., (2009), “Measurement on the Flow and Dispersion of Plume crossing an Array of Semi-circular Structures,” Proceedings of an International Workshop on Physical Modelling of Flow and Dispersion Phenomena,

PHYSMOD-2009, pp. G.3.1-G.3.8, Von Karman Institute for Fluid Dynamics, Belgium.

[8] Shiau, B.-S. and Tsai, B.-J., (2009), “Wind Tunnel Measurement of Flow and Dispersion of Power Plant Emission on the Coastal Region with Complex Terrain,”

Proceedings of the 5th European and African Conference on Wind Engineering, pp.201-204, Florence, Italy.

[9] Shiau, B.-S., and Wu, Y.-C., (2007), “Effects of Semi-circular Windbreak Array on the Heavy Gas Plume Dispersion in Urban Area,” Proceedings of International Workshop on Physical Modeling of flow and Dispersion Phenomenon, pp.7-13, Orleans, France.

[10] Shiau, B.-S. and Kuo, P.-H., (2007), “Experiments on the Dispersion of Dense Gas Spilled from Two Identical Sources with the Turbulent Boundary Layer Flow,”

Proceedings of the 12th International Conference on Wind Engineering, pp.1343-1350, Cairns, Australia.

[11] Shiau, B.-S. and Chiou, H.-S., (2006), “Wind Tunnel Study of Fence Shelter on Continuous Release of Heavy Gas in the Turbulent Boundary Layer Flow,”

Proceedings of Conference on Modeling Fluid Flow (CMFF’06) and the 13th International Conference on Fluid Flow Technologies, pp.140-147, Budapest, Hungary.

[12] Shiau, B.-S. and Tsai, B.-J., (2005), “Wind Tunnel Modeling Dispersion of the Airborne Pollutant in the Complex Terrain,” Proceedings of the 6th Asia-Pacific Conference on Wind Engineering, Seoul, Korea.

[13] Tsai, B.-J. and Shiau, B.-S., 2011), “Flow and Dispersion of Pollution in the Hilly Terrain,” Journal of the Chinese Institute of Engineers, Vol.34, Issue 3, pp.393.

[14] Shiau, B.-S. and Lin, P.-L., (2010), “Wind Tunnel Measurement on the

Fences,” Proceedings of the 9th UK Conference on Wind Engineering, pp.57-60, Bristol, UK.

[15] Yassin, M. F., Ohba, M., and Tanaka, H., (2008), “Experimental Study on Flow and Gaseous Diffusion Behind an Isolated Building,” Environmental Monitoring Assessment, Vol.147, pp.149-158.

[16] Yassin, M. F., (2009), “Study on Gas Diffusion Emitted from Different Height of Point Source,” Environmental Monitoring Assessment, Vol.148, pp.379-395.

[17] Counihan, J., (1975), “Adiabatic Atmospheric Boundary Layer: A Review and Analysis of Data from the Period 1880-1972”, Atmospheric Environment, Vol. 9, pp. 871-905.

[18] Briggs, G. A., (1969),“Plume Rise", US Atomic Energy Commission Critical Review, TID-25075, Clearinghouse for Federal Scientific and Technical Information.

[19] Yassin, M, and Ohba, M., (2008),“Experimental Study on Flow and Gaseous Diffusion behind an Isolated Building,"Environmental Monitoring Assessment, Vol.147, pp.149-158.

[20] Yoshie, R., Jiang, G., Shirasawa, T., and Chung, J., (2011)“CFD Simulations of Gas Dispersion Around High-Rise Building in Non-Isothermal Boundary

Layer,"Journal of Wind Engineering and Industrial Aerodynamics, Vol. 99, pp.279-288.

附錄一 期初報告審查審查委員意見及意見回覆表

2. 建物週邊量測濃度之採樣點

2. 期末報告繳交日期為 10 月 15 日,研究進度表請配合調整。

以符合所內研究計劃期程之 相關規定。

附錄二 期中報告審查審查委員意見及意見回覆表

3. 報告書 P.14、Fg3-3,X 軸標題

2. 在都市中煙囪高度長高於鄰近 建物請說明排放源高度為何設 定為 0.5H 及 H。

2. 謝謝副所長指正。考量對建 築物鄰近周圍上下游影響較 顯著之狀況,因此排放源高 度選擇 0.5H 及 1H。未來排 放源高度增列 1.5H。

附錄三 期末報告審查審查委員意見及意見回覆表

謝教授

附錄四 風洞實驗過程 SOP 手冊

methane =

ρ

……… (2)

s Q kg

Q = ×

ρ

S =5.953245822×105×1.151=6.852185941×105

(貳)實驗現場配置示意圖 參閱第二章圖 2-3。

(參)量測迫近流場 Ionization Detector)、紀錄器:採用 SISC 公司之色層分析儀處理系統,該系 統紀錄FID 輸出之訊號。

C0 Ionization Detector)、紀錄器:採用 SISC 公司之色層分析儀處理系統,該 系統紀錄 FID 輸出之訊號。

8. 經由分析計算出水平向擴散尺度以及質心位置,其計算如下: Ionization Detector)、紀錄器:採用 SISC 公司之色層分析儀處理系統,

該系統紀錄 FID 輸出之訊號。

將其輸出的訊號峰值做強迫積分,並且帶入 FID 火焰離子偵測器之減量線公式,

經由換算出每個配置量測點之濃度值 C(μg/ l)。

廢 氣 排 放 對 周 圍 環 境 影 響 之 風 洞 實 驗 研 究 出 版 機 關 : 內 政 部 建 築 研 究 所

電話:(02)89127890

地址:新北市新店區北新路三段 200 號 13 樓 網址:http://www.abri.gov.tw

編者:陳 瑞 玲 、 蕭 葆 羲 出 版 年 月 :100 年 12 月 版 次 : 第 一 版

ISBN:978-986-03-0236-3

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