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研究生:李哲銓
研究生(外文):LEE,CHN-CHUAN
論文名稱:外氣對於氯化鋰溶液除濕與再生影響之研究探討
論文名稱(外文):Research on The Effect of Outdoor Air on Lithium Chloride Solution for Dehumidification and Regeneration
指導教授:吳友烈
指導教授(外文):WU, YU-LIEH
口試委員:楊愷祥陳志豪
口試委員(外文):YANG, KAI-SIANGCHEN,CHIH-HAO
口試日期:2020-07-29
學位類別:碩士
校院名稱:國立勤益科技大學
系所名稱:冷凍空調與能源系
學門:工程學門
學類:其他工程學類
論文種類:學術論文
論文出版年:2020
畢業學年度:108
語文別:中文
論文頁數:98
中文關鍵詞:液態除濕氯化鋰外氣含濕量除濕風量除濕溫度再生溫度
外文關鍵詞:Liquid DesiccantLithium ChlorideMoisture Content of Outside AirDehumidification Air VolumeDehumidification TemperatureRegeneration Temperature
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本研究使用吸收能力佳的氯化鋰除濕乾燥劑,作為液態除濕之溶液,並在除濕溶液溫度、除濕風量、外氣含濕量等幾個可變因子下,探討除濕能力理想參數組合,並在理想參數組合下,搭配EES模擬方式,計算出再生能力最佳組合,最後以實驗方式驗證模擬結果。根據第一組至第十四組實驗數據,分析出當外氣含濕量較高時,在相同除濕風量情況下,除濕溶液可吸收較多的水份,其除濕能力會高於其他含濕量少的組別,且降低除濕溫度後,會增加溶液與空氣的水蒸氣表面壓差,使得除濕能力增加;此外將除濕風量提高後,其單位時間處理的水份較多,除濕能力因而高於其他低風量組別;而再生部份,當外氣含濕量高時,則不利於再生,因本身外氣的水蒸氣表面壓力較高的情況下,導至空氣與再生溶液之間的水蒸氣表面壓差小,因此需提高再生溶液溫度,進而提高水蒸氣表面壓差;另外實驗結果發現當相同外氣含濕量時,再生溫度在50℃時,溶液與空氣的水蒸氣壓差較小,因此再生能力也較差,故需將溶液加熱到60℃,才會有較大再生能力。
This study employed lithium chloride desiccant, which exhibits favorable absorption capacity, as a liquid desiccant solution. The ideal parameter combination for dehumidification was determined using variable factors such as desiccant solution temperature, dehumidification air volume, and moisture content of outside air. The parameter combination was then applied for simulation in the Engineering Equation Solver to identify the optimal combination of regeneration capacity, and an experiment was conducted to verify the simulation results. According to the experiment data of the 14 combinations—with a constant dehumidification air volume—the desiccant solution absorbed a higher amount of water when the moisture content of outside air was high than when the moisture content was low. When the dehumidification temperature was lowered, the vapor pressure difference between the solution surface and air increased, enhancing the solution’s dehumidification capacity. When the dehumidification air volume was raised, which heightened the amount of water processed per unit of time, the dehumidification capacity also increased. In terms of regeneration, a high moisture content of outside air was hindered the regeneration. This was because of the decreased vapor pressure difference between the air and the regeneration solution surface when the vapor pressure of the outside air was high. At this point, the temperature of the regeneration solution must be raised to increase the vapor pressure difference. Furthermore, at a constant moisture content of outside air, when the regeneration temperature was 50 °C, the vapor pressure difference between the solution surface and the air was relatively small, which inhibited regeneration; the regeneration capacity was increased only when the solution temperature was raised to 60 °C.
摘要 I
ABSTRACT II
誌謝 IV
目錄 V
圖目錄 IX
表目錄 XIV
第一章 緒論 1
1-1 研究動機及目的 1
1-2 研究方法 4
1-3 研究流程 5
1-4 文獻回顧 6
第二章 研究原理與相關理論 18
2-1 不同類型的除濕方式 18
2-2 化學除濕乾燥劑介紹 22
2-3 液態除濕質量關係式 26
2-3-1 質量關係 26
2-3-2 濕空氣相關性質 27
2-3-3 溶液及空氣流動的熱質傳遞介紹 32
2-3-4 液態除濕計算公式 36
2-3-5 EES計算模擬 38
第三章 實驗規劃與建構 42
3-1 實驗介紹 42
3-2 實驗參數 42
3-3 實驗流程 44
3-4 實驗建構 46
3-4-1 液態除濕系統結合氣源式雙效熱泵主機 46
3-4-2 液態除濕系統主要設備 48
3-4-3 實驗系統主要設備 49
3-4-4 實驗系統附屬設備 54
3-5 實驗量測說明 55
3-5-1 冷熱源水溫及溶液溫度量測 55
3-5-2 冷熱源流量及溶液流量量測 56
3-5-3 空氣溫濕度及露點量測 57
3-5-4 空氣流量量測 58
3-5-5 溶液濃度量測 59
第四章 實驗結果分析與討論 60
4-1 除濕側性能實驗數據分析 60
4-1-1 除濕風量1500CMH實驗數據分析 60
4-1-2 除濕風量1800CMH實驗數據分析 64
4-1-3 除濕風量2200CMH實驗數據分析 67
4-1-4 不同除濕風量實驗數據比較 71
4-1-5 除濕側實驗數據歸納整理 73
4-2 再生側性能實驗數據分析 76
4-2-1 除濕最佳組合下之改變再生風量實驗數據分析 76
4-2-2 再生噴淋溫度搭配計算模擬實驗數據分析 78
4-2-3 再生實驗與模擬數據歸納整理 80
4-3 除濕及再生實驗與模擬數據分析比較 81
4-4 實驗數據再現性 85
4-5 實驗不準度計算 89
第五章 結論與建議 90
5-1 結論 90
5-2 建議 93
第六章 參考文獻 94

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