臺灣博碩士論文加值系統

本研究之目的在於探討傾斜式循環流體化床之操作限制，透過實驗研究在不同外氣狀態及吸濕材參數下，可達成循環定義之最小空床速度與實際操作風速，及其衍生出之單位重量空氣吸附量與除濕量。同時以該實驗結果為依據，訂定流體化床之設計流程。實驗結果首先顯示，通過對床體間流道之循環操作限制於：粒子球形度、靜電、逆風、粒子流量與吸濕材填充厚度等參數。同時床體間流道之循環操作，受吸濕材之材料強度及密度所影響。其次，根據實驗結果，影響可循環之最小空床速度程度較大的參數，為單位面積之平均吸濕材填充重量，呈正相關；而吸濕材種類及吸附床入口狀態影響較小，在風速之解析度為0.5 m/s的情況下，無明顯之影響。最後，根據實驗結果及推測之參數關係，完成循環式流體化床之五步驟設計流程，提供未來產業化之重要參考。

The purpose of this study is to discuss operating limitations of inclined circulating fluidized bed. With different conditions of inlet air and parameters of desiccants, minimum of circulating wind speed and related parameters can be found by experiments. And according the results of the experiments, the design method of fluidized bed can also be set out. First, by the observation of the paths between beds, the main reason causing the paths’ jamming can be conjectured to be the sphericity, the static electricity, the direction of the wind in the paths, the flow rate of desiccant particles in the paths and the filling height of desiccant. Besides, the parameters affecting the behavior of desiccant particles in the paths are the material density and strength of desiccants. Second, according to the results of the experiments, the parameter affecting minimum of circulating wind speed most is the average filling amount of desiccants per area, and it presents positive correlation. Finally, according to the results of the experiments and the relations between parameters of beds, the design method of fluidized beds can be set out.

誌謝 i
摘要 ii
Abstract iii
目錄 iv
圖目錄 vi
表目錄 viii
符號說明 ix
第一章 緒論 1
1.1 前言 1
1.2 文獻回顧 2
1.3 研究動機與目的 9
第二章 基礎理論 11
2.1 流體化床運作原理 11
2.2 流體化階段 11
2.3 傾斜流體化 14
2.4 粒子分類 15
2.5 吸附原理 17
2.6 除濕系統之性能計算 22
2.7 吸附材料 23
2.8 固定填充床壓力損失之數學理論模型 25
2.9 流體化床壓力損失與最小流體化速度 25
2.10 傾斜流體化床壓力損失與渠道突破速度 26
第三章 研究方法 28
3.1 使用儀器 28
3.2 床體參數 34
3.3 實驗參數 37
3.3.1 更改參數 38
3.3.2 所求參數 39
3.4 實驗流程 39
第四章 結果與討論 41
4.1 床體間流道研究 41
4.2 風速實驗數據及探討 44
4.3 流體化床設計方法 49
4.4 方管設計 58
第五章 結論與建議 60
5.1 結論 60
5.2 建議與未來展望 61
參考文獻 62

[1]經濟部能源局 (2012)。能源查核與節約能源案例手冊-空調系統。
[2]Daizo Kunii (1991). Fluidization Engineering.
[3]Ahmed M. Hamed, Walaa R. Abd El Rahman, S.H. El-Eman (2010). Experimental study of the transient adsorption/desorption characteristics of silica gel particles in fluidized bed. Energy, 35, 2468-2483.
[4]陳子東 (2013)。矽膠流體化床之性能研究。碩士論文，國立臺灣大學機械工程學系研究所。
[5]Ahmed M. Hamed (2005). Experimental investigation on the adsorption/desorption processes using solid desiccant in an inclined-fluidized bed. Renewable Energy, 30, 1913–1921.
[6]Watcharop Chaikittisilp, Teerapong Taenumtrakul, Peeravuth Boonsuwan, Wiwut Tanthapanichakoon, Tawatchai Charinpanitkul (2006). Analysis of solid particle mixing in inclined fluidized beds using DEM simulation. Chem. Eng. Journal 122, 21–29.
[7]A. Horibe, Sukmawaty, N. Haruki, D. Hiraishi (2012). Continuous Sorption and Desorption of Organic Sorbent Powder in Two Connected Fluidized beds. Journal of Thermal Science and Technology, 7, 564-576.
[8]A. Horibe, Sukmawaty, N. Haruki, D. Hiraishi (2013), Sorption–desorption operations on two connected fluidized bed using organic sorbent powder, International Journal of Heat and Mass Transfer 65, 817-825.
[9]吳柏勳 (2014)。矽膠循環流體化床應用於吸附除濕系統之研究。碩士論文，國立臺灣大學機械工程學系研究所。
[10]江宜瑾 (2015)。循環式傾斜流體化床應用於吸附除濕系統。碩士論文，國立臺灣大學機械工程學系研究所。
[11]洪泰智 (2016)。改良式傾斜循環流體化床應用於吸附除濕系統。碩士論文，國立臺灣大學機械工程學系研究所。
[12]K. Smolders, J. Baeyens (2001). Gas fluidized beds operating at high velocities: a critical review of occurring regimes. Poowder Technology, Vol.119, pp.269-291.
[13]J. Bridgwater(1976). Powder Technology, 11, 199.
[14]D. Geldart (1973). Type of Gas Fluidization. Powder Technology, Vol.7, pp.285-292.
[15]Akhil Rao, Jennifer S. Curtis, Bruno C. Hancock and Carl Wassgren (2010). The Effect of Column Diameter and Bed Height on Minimum Fluidization Velocity. AIChE Journal, Vol. 56, No. 9, 2304-2311.
[16]Ajay MR and Aditya Karnik (2012). Numerical investigation of the effect of bed height on minimum fluidization velocity of cylindrical fluidized bed. ICCMS, 1-10.
[17]David Roberto Escudero (2010). Bed height and material density effects on fluidized bed hydrodynamics. Iowa State University, Ames, Iowa.
[18]鄭最亮，傅采峰，鄭柏存 (2007)。混凝土製品及技術，上海建材，第2期。
[19]侯國豔，冀志江，王繼梅，王曉燕(2006)。調濕材料的研究現狀，生態環境建材。
[20]Stephen Brunauer, Lola S. Deming, W. Edwards Deming, Edward Teller (1940). On a Theory of the Van Der Waals Adsorption of Gases. Journal of the American Chemical Society, Vol.62, pp.1723-1732.
[21]Noll, K. E., V. Gounaris, and W. S. Hou (1992). Adsorption technology for air and water pollution control. Lewis Pubbishers, Inc., 32‐34.
[22]W. Wang, L. Wu, Z. Li, Y. Fang, J. Ding, J. Xiao. An Overview of Adsorbents in the Rotary Desiccant Dehumidifier for Air Dehumidification. Drying Technology 31 (2013) 1334–1345.
[23]謝長鈜 (2011)。週期式運轉全熱交換器之吸附材料性能研究。碩士論文，國立臺灣大學機械工程學系研究所。
[24]Weilong Wang, Luoming Wu, Zhong Li, Yutang Fang, Jing Ding, and Jing Xiao (2013). An Overview of Adsorbents in the Rotary Desiccant Dehumidifier for Air Dehumidification. Drying Technology: An International Journal, 31, 1334-1345.
[25]K.C. Ng, H.T. Chua, C.Y. Chung, C.H. Loke, T. Kashiwagi, A. Akisawa, B.B.Saha (2001). Experimental investigation of the silica gel-water adsorption isotherm characteristics. Applied Thermal Engineering, 21, 1631-1642.
[26]China Silica Gel Co. Silica Gel Basic. Retrieved May 11, 2015, from: http://www.china-silicagel.com/knowledge.html
[27]Jiang, Y.; Ding, J. (2011). Experimental research on silica gel molecularsieve composite adsorbents with ceramic fiber matrix. Journal of Engineering Thermophysics, 32, 1218–1220.
[28]ButterworthsLondoIl,G.W.Brundrett.HandbookofDehumidification Technology. 1987.
[29]Sabri Ergun (1952). Fluid Flow Through Packed Columns. Carnegie Institute of Technology.
[30]Fluidization: A Unit Operation in Chemical Engineering. Unit Operations Laboratory Department of Chemical Engineering University of Florida
[31]Wen, C.Y. & Y.H. Yu (1966). A generalized method for predicting the minimum fluidization velocity. AIChE J 12, 610-612.
[32]D. P. O’Dea, V. Rudolph*, & Y. 0. Chong (1990). The effect of inclination on fluidized beds. Powder Technology, 63, 169-178.
[33]Merry, J.M.D.,and Davidson, J.F. (1973). Trans. Instn. Chem. Engrs. 51,361-368.
[34]D. C. Procter and R. R. Barton(1974). Measurements of the angle of interparticle friction.
[35]邱偉倫 (2011)。烘衣機排氣熱回收再利用之性能研究。碩士論文，國立臺灣大學機械工程學系研究所。
[36]A. J. D. Lambert, F. P. M. Spruit* & J. Claus(1991). Modelling as a Tool for Evaluating the Effects of Energy-Saving Measures. Case Study: A Tumbler Drier.