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完整後設資料紀錄
DC 欄位 | 值 | 語言 |
---|---|---|
dc.contributor.advisor | 黃振康 | zh_TW |
dc.contributor.advisor | Chen-Kang Huang | en |
dc.contributor.author | 蔡凱任 | zh_TW |
dc.contributor.author | Kai-Jen Tsai | en |
dc.date.accessioned | 2023-07-19T16:14:38Z | - |
dc.date.available | 2023-11-09 | - |
dc.date.copyright | 2023-07-19 | - |
dc.date.issued | 2023 | - |
dc.date.submitted | 2023-02-15 | - |
dc.identifier.citation | 陳國彥. 1984. 溫濕圖與柯本氣候分類.
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dc.identifier.uri | http://tdr.lib.ntu.edu.tw/jspui/handle/123456789/87744 | - |
dc.description.abstract | 濕度對人類以及工業是非常重要的,故目標是研究液體除濕系統且方程化乾燥劑的數據。研究主軸為探討液體除濕系統的新式還原方法。而乾燥劑使用氯化鈣與氯化鋰來調配實驗的液體除濕液。
實驗製作除濕液的P-T-X (蒸氣壓-溫度-濃度)數據,接著結合Antoine方程、理想氣體方程式與Raoult定律推測出P-T-X模型並利用曲面擬和以及參數估計的量數來估計其最佳模型。 採用了氣泡塔反應器的概念來設計還原實驗,通入乾燥的空氣來還原液體除濕劑,操縱變因為不同乾燥劑與不同孔徑的分佈器。使用影像處理、由陰影還原形狀 (SFS)概念與雙鏡頭來估計氣泡的表面積與速度等物理量,且將得知的深度標記為基礎深度 (Ground-Truth-Depth)再利用法線貼圖 (Normal Mapping)模擬出3D氣泡。 探討還原實驗其中量化數據與結果,就量化數據來看孔徑1–3 mm,分佈器的孔徑每大1 mm,氣泡平均速度會快約4%,氣泡平均表面積會減少約24%,氣泡平均體積會減少約39%。就還原結果,氯化鈣與氯化鋰皆在孔徑1 mm時,還原效果最佳。在還原溫度達70 °C、液體除濕劑濃度為10 wt%、環境溫度為25 °C、環境相對濕度為56%的情況下,則氯化鈣的還原水量最高可達0.26 g/min,而氯化鋰的還原水量最高可達0.40 g/min。 | zh_TW |
dc.description.abstract | Humidity plays an important role for humans and industries. Therefore, the purpose of this study was to investigate liquid dehumidification systems and formulate desiccant data. The main research was to explore a new regeneration part of the liquid dehumidification system. The calcium chloride and lithium chloride were used to prepare for dehumidifying solution.
The vapor pressure-temperature-concentration (P-T-X) data of calcium chloride and lithium chloride were produced and combined with Antoine equation, ideal gas equation, and Raoult's law to infer the P-T-X model. In addition, surface fitting and measure of accuracy were used to estimate the best model. The study adopted the concept of the bubble column reactor to design the regeneration experiment. The dry air was vented to regenerate the liquid desiccant and the dependent variables were sparger's diameter of pore and desiccants. The image processing, the concept of Shape from Shading (SFS) and dual cameras were used to estimate the surface area and velocity of the bubbles. Moreover, Normal Mapping was used to simulate 3D bubbles. The obtained depth was marked as Ground-Truth-Depth and then Normal Mapping was used to simulate 3D bubbles. The quantitative data and results of the regeneration experiment were discussed. In terms of the quantitative data, in the case of 1 to 3 mm pore size, the average velocity of bubble would increase by about 4%, the average surface area of the bubble would decrease by about 24%, and the average volume of the bubble would decrease by about 39% when the pore size of the sparger increases by 1 mm. In terms of the regeneration results, the effect of CaCl2 and LiCl were best at 1 mm. When the regeneration temperature reached 70 °C, in the case of 10 wt% of the concentration of liquid desiccant, 25 °C of the ambient temperature, and 56% of relative humidity, CaCl2 could reach up to 0.26 g water of regenerated per minute, while LiCl could reach up to 0.40 g water of regenerated per minute. | en |
dc.description.provenance | Submitted by admin ntu (admin@lib.ntu.edu.tw) on 2023-07-19T16:14:38Z No. of bitstreams: 0 | en |
dc.description.provenance | Made available in DSpace on 2023-07-19T16:14:38Z (GMT). No. of bitstreams: 0 | en |
dc.description.tableofcontents | Acknowledgement i
Abstract ii 摘要 iv List of Figures x List of Tables xvii Nomenclature xx Greeks xxii Subscripts xxii 1. Introduction 1 1.1 Background 1 1.2 Motivations and Objectives 3 1.3 Structure of the Thesis 4 2. Literature Survey 5 2.1 Dehumidification System 5 2.1.1 Various Dehumidification Systems 5 2.1.2 Liquid Dehumidification System 14 2.2 Liquid Desiccant 16 2.2.1 Vapor Pressure of Aqueous Solutions of Salts 17 2.2.2 Antione Equation and Antoine Type of Equation 21 2.3 Parameter Estimation 25 2.3.1 Point Estimation 25 2.3.2 Over-Fitting 30 2.3.3 Measures 33 2.4 Physical Theories and Laws 38 2.5 Regeneration Experiment 41 2.5.1 Bubble Column Reactors Design 42 2.5.2 Image Processing 45 2.5.3 Quantify Bubbles by Image Processing 54 2.5.4 Two-Phase Flow 59 2.6 3D Computer Graphics 61 2.6.1 Lambert's Cosine Law and Lambertian Reflectance 61 2.6.2 Normal Mapping 64 2.6.3 Shape from Shading 66 3. Research Methods 69 3.1 Materials of Experiment 69 3.2 Experiment Apparatus 70 3.2.1 Measurement of Vapor Pressure of Liquid Desiccants 70 3.2.2 Quantization of Bubble Flow 72 3.2.3 Regeneration Experiment 77 3.3 Algorithms for Experimental Methods 81 3.3.1 Nonlinear Regression 81 3.3.2 Class Antoine Equation Fitting in P=f(T,X) 82 3.3.3 Measures of Accuracy 84 3.3.4 Cycle Diagram of Liquid Desiccants 87 3.3.5 Algorithms of Bubble Quantification 88 3.3.6 Physics Properties through Image Processing 99 3.3.7 3D Bubble 107 4. Results and Discussion 111 4.1 Liquid Desiccant Semi-Empirical Formula 111 4.1.1 Antoine Equation Fitting 111 4.1.2 New Antoine Equation Fitting 115 4.2 Failure of RGB-D 142 4.3 Potential of Water 143 4.4 Regeneration Result of Bubble 144 4.4.1 Object Detection 145 4.4.2 Bubble Segmentation 148 4.4.3 Label Centroid of Bubble and Count 149 4.4.4 Centroid of Bubble and Position Function 151 4.4.5 3D Bubble Surface 153 4.4.6 Physical Properties of Bubbles 156 4.5 Regeneration Result of Liquid Desiccants 158 4.5.1 Regeneration Experiment 158 4.5.2 The Relationship between Bubble Pressure and Flow 173 5. Conclusion and Future Work 175 5.1 Conclusion 175 5.1.1 Model Liquid Desiccant Data 175 5.1.2 Quantization of Bubble Flow 176 5.1.3 Regeneration 176 5.2 Future Work 177 5.2.1 Model Liquid Desiccant Data 177 5.2.2 Quantization of Bubble Flow 177 5.2.3 Regeneration 178 References 179 Appendix A 189 Appendix B 191 Appendix C 195 | - |
dc.language.iso | en | - |
dc.title | 兩種除濕溶液的新式還原方法 | zh_TW |
dc.title | A Novel Regeneration Process of Two Desiccants | en |
dc.type | Thesis | - |
dc.date.schoolyear | 111-2 | - |
dc.description.degree | 碩士 | - |
dc.contributor.oralexamcommittee | 林怡均;李宜庭 | zh_TW |
dc.contributor.oralexamcommittee | Yi-Jiun Lin;Yee-Ting Lee | en |
dc.subject.keyword | 液體除濕系統,乾燥劑,曲面擬和,由陰影還原形狀,氣泡量化, | zh_TW |
dc.subject.keyword | Liquid Dehumidification System (LDS),Desiccant,Surface Fitting,Shape from Shading (SFS),Bubble Quantification, | en |
dc.relation.page | 195 | - |
dc.identifier.doi | 10.6342/NTU202300551 | - |
dc.rights.note | 同意授權(限校園內公開) | - |
dc.date.accepted | 2023-02-16 | - |
dc.contributor.author-college | 生物資源暨農學院 | - |
dc.contributor.author-dept | 生物機電工程學系 | - |
顯示於系所單位: | 生物機電工程學系 |
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