臺灣博碩士論文加值系統

本研究目的為設計一傾斜循環流體化床系統來進行空調除溼作業，其利用顆粒重力、顆粒通道與流體化床特性即可連續操作。
首先，本研究探討改良之圓管、方管流體化床系統在不同操作條件下之除濕性能表現。實驗結果顯示，使用矽膠顆粒作為吸附材料，隨著外氣相對濕度增加、再生溫度增加，系統之總吸附量亦提高；此外，在高再生溫度下(50℃)，圓管床體系統與方管床體系統的除溼性能表現，差距率在2.6%以內，差異不大；然而在低再生溫度時(25℃)，圓管床體有較佳的吸附表現，與方管床體的結果差距率可高達53%，此因相較於方管床體，圓管床體的構造有更高顆粒交換率的潛力。
最後，本研究探討於圓管、方管床體內部放置楔形擋風板，對系統除溼性能之影響，並找出各自最佳顆粒填充量。實驗結果顯示，由於擋版強化顆粒之垂直旋轉運動、並活化沉積在最底部不動之顆粒，使得系統的材料單位重總吸附量明顯提升。本研究之圓管床體4號擋板（底部厚度4.7 cm、高度13 cm）在單床床體顆粒填量495 g下有最佳之除濕結果，材料單位重總吸附量高達0.512 kg/hr-kg，其平均淹沒高度約占通管出口截面長度之60%；方管床體的部分，4號擋板（底部厚度4.15 cm、高度13 cm）在單床顆粒408 g下有最佳除濕性能表現——0.534 kg/hr-kg，其平均淹沒高度約占通管出口截面長度之45%。

The purpose of this study is to design an inclined circulating fluidized bed that maintains a proper humid indoor environment and be energy-efficient. With gravity, the design of particle channels and the characteristics of the fluidized bed, the system can adsorb water vapor continuously and steadily.
This study first experimentally investigates the performance of the fluidized bed, both circular and square tube, under different operating air conditions. The results indicates that the adsorption capacity is increased with the raising relatvie humidity of the outside air and the raising regeneration temperature. Besides, under the condition of high regeneration temperature(50℃), there is little difference between the adsorption capacity of a circular tube and that of a square tube. Nevertheless, under low regeneration temperature(25℃), the adsorption performance of curcular tube is higher than that of the square tube. It’s because, compared to a square tube, the shape of a circular tube inherently increases the exchange rate of particles between the beds.
This study also experimentally investigates the influence of a wedged-shape air baffle on the performance of the system, and then finds out the weight of particles with the highest adsorption rate. The results indicates that the total adsorption amount per hour per weight of particles increases with the baffle placement. The number 4 baffle of the circular beds (bottom thickness 4.7 cm, height 13 cm) with the weight of particles 495 g per bed has the highest total adsorption amount per hour per weight of particles, 0.512 kg/hr-kg. In this experiment, as the lower edge of the exit of the particle channels represents the baseline, the submerging height (the average height of the inclined particle plane in beds) is around 60% of the length between the lower edge and the higher edge of the exit of the particle channels. As for the square-tube beds, the number 4 baffle (bottom thickness 4.15 cm, height 13 cm) with 408 g weight of particles gives the highest adsorption result, 0.534 kg/hr-kg. Its submerging height is around 45% of the length between the lower/higher edges of the exit of the particle channels.

致謝 I
摘要 II
ABSTRACT III
目錄 V
圖目錄 VII
表目錄 X
符號說明 XI
第1章 緒論 1
1.1 前言 1
1.2 文獻回顧 3
1.2.1 固定填充床(fixed packed bed) 4
1.2.2 流體化床(fluidized bed) 5
1.2.3 傾斜流體化床(inclined fluidized bed) 12
1.3 研究動機與目的 20
第2章 基礎理論 23
2.1 吸附原理 23
2.2 吸附材料 27
2.3 壓損與流體化速度之數學模型 28
2.4 除濕系統之性能計算 30
第3章 研究方法 33
3.1 實驗系統簡介 33
3.2 實驗設備與量測儀器 34
3.3 第四代傾斜式循環流體化床構造介紹 42
3.4 實驗平台與床體校正 44
3.5 實驗參數 48
3.6 實驗流程 51
3.7 數據分析 52
第4章 結果與討論 54
4.1 圓形管床體之材料測試結果 54
4.2 方形管床體之材料測試結果 56
4.3 圓形管擋板之材料測試結果 60
4.4 方形管擋板之材料測試結果 64
第5章 結論與建議 67
5.1 結論 67
5.2 建議 68
參考文獻 71

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