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  • 學位論文

水洗室的性能研究

Analysis of Thermodynamics for Air Washer

指導教授 : 柯明村
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摘要


在一般空調工程的應用中,水洗室並不多見,此種裝置可進行多種空氣調節過程、具有淨化空氣之功能,所以在紡織廠、煙廠等需要調節濕度、淨化空氣的場合被廣泛使用;近年來高科技廠房中,外氣引入需求量大、又要兼顧恆溫恆濕嚴格要求的場合,在其外氣處理空調箱中置入水洗室,衍然已成為標準配備。 本研究首先對空氣通過濕表面之過程作詳細之整理,進而深入探討水洗室之熱、質傳性能分析式。並建立令無因次數學模式使適合水洗室熱力性能解析,期能達到簡化水洗室熱力分析的方法,目的在縮小以方程式求解和實際情況間的差距;及減少量測可靠數據的數量。 在水洗室中,空氣和水完全直接接觸,其熱傳量或質傳量取決於與空氣真正接觸的水表面積,而此面積與噴嘴構造、噴嘴前水壓等很多因素有關,要準確測定其表面積相當困難。因此,無法以純理論分析法求得熱傳效率和飽和效率,只能透過實驗方法歸納結果以分析其熱力性能。本研究以水洗室熱傳效率和飽和效率分析模式,計算分析實測數據後得到熱傳效率和飽和效率之實測值。結果發現水洗室的進風溫度越高其熱傳效率及飽和效率也越高;熱傳效率及飽和效率和噴水量的大小成正比;另外噴排配置以熱傳效率及飽和效率由高至低的排列順序是雙排逆噴、雙排對噴、雙排順噴、單排逆噴及單排順噴。

關鍵字

水洗室 MAU 飽和度

並列摘要


Air washer appears sometimes in general air condictioning engineering applications. Lately in most of high-tech plants which needs lots of outside air, and very concern with the temperature and humidity, put air washer in Make-Up Air Unit (MAU) should be the standard arrangement. This researched thesis and made up the process of the air passing the wet surface, and then, studied the mass and heat transfer for air washer. Besides, present a nondimensional mathematical model and solution program to such air conditioning processes for air washer were presented. It is aimed to simplify the solution of theoretical analysis for air washer. Air and water contact completely and directly in the air washer. The mass and heat transfers are determined by this actual contact area, charactenstics of spray nozzle, spray pressure, … etc. Practically it is difficult to measure the actual contact area exactly. Therefore, this study deduced an numerical model for determining the efficiency of heat transfer and saturation degree by analyzing the experimental data. The results show that the efficiency of heat transfer and saturation degree for air washer is enhanced with higher inlet air temperature. The efficiency of heat transfer and saturation degree is direct proportion to the spray water flow rate. Comparing the arrangement of spray arrangemeat based on the efficiency of heat transfer and saturation degree from high to low is, two-row reverse spray,two-row counter spray, two-row parallel spray, single-row reverse spray and single-row parallel spray.

參考文獻


[1] 黃錦文、張永鵬、蔡瑞益,「水洗室空調系統之熱質傳分析及設計概說(1)」,中華水電冷凍空調,期216,頁100-110,2001. 10。
[2] 黃錦文、張永鵬、蔡瑞益,「水洗室空調系統之熱質傳分析及設計概說(2)」,中華水電冷凍空調,期217,頁113-124,2001. 11。
[9] Hyland and Wexler, “Psychrometrics”, ASHRAE Handbook Fundamentals. 1997.
[11] The Trane Company, “Trane Air conditioning manual”, Seventieth Printing, Published in the Interests of the Air Conditioning Industry by The Trane Company, LA CROSSE WISCONSIN, 1996.12
參考文獻

被引用紀錄


陳嘉倫(2010)。空調設備改裝間接蒸發式冷卻模組性能之研究〔碩士論文,國立臺北科技大學〕。華藝線上圖書館。https://www.airitilibrary.com/Article/Detail?DocID=U0006-1207201012294600
林嘉宏(2012)。高速水洗外氣空調箱性能研究〔碩士論文,國立臺北科技大學〕。華藝線上圖書館。https://www.airitilibrary.com/Article/Detail?DocID=U0006-1807201212475500

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