研究生: |
高志承 Chih-Chen Kao |
---|---|
論文名稱: |
觀測獨立控制濕度與溫度空調系統之性能 Experimental observations on performance of an air conditioning system controlling temperature and humidity independently |
指導教授: |
林怡均
Yi-Jiun Peter Lin |
口試委員: |
朱佳仁
Chia-Ren Chu 朱瑾 Jinn P. Chu 蔡尤溪 Yew-Khoy Chuah |
學位類別: |
碩士 Master |
系所名稱: |
工程學院 - 機械工程系 Department of Mechanical Engineering |
論文出版年: | 2016 |
畢業學年度: | 104 |
語文別: | 中文 |
論文頁數: | 175 |
中文關鍵詞: | 液體除濕系統 、空調系統 、氯化鋰溶液 、濕度與溫度調節 、電能消耗功率 |
外文關鍵詞: | Hybrid liquid desiccant system, Air-conditioning system, LiCl solution, Humidity and temperature controlling, Electricity power consumption. |
相關次數: | 點閱:254 下載:3 |
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本研究為觀測液體除濕空調系統的性能表現,此系統使用氯化鋰溶液吸收水分的特性移除潛熱以控制空氣中的濕度,接續使用冷凍循環系統控制空氣的溫度,因此相較於傳統空調系統,具有能夠獨立地控制濕度與溫度的特點,另外本系統利用冷凍循環系統冷凝器的排放熱量,類似熱泵的系統,還原氯化鋰溶液濃度,回復至吸濕前的狀態,達到節約能源的效益。本論文內容主要觀測此空調系統在2016年3月1日至2016年6月30日之間,系統在加熱模式與冷卻模式下,此空調系統的供風空氣在各個除濕及溫控階段的溫度及濕度狀態,以及調控後的供風空氣條件對於室內環境溫、濕度的改變,並且比較不同的外界環境溫、濕度對本系統電能消耗量的影響。
此液體除濕空調系統在除濕過程不需先過度地冷卻空氣以達除濕目的,而是利用氯化鋰溶液吸收空氣中的水蒸氣,在夏季冷卻模式中,能將空氣中的絕對濕度調降至9.5±1.5 g/kg;在冬季加熱模式中,系統調控濕度之能力會因外界環境而有所不同,在外界潮濕環境,系統能將絕對濕度調降至6.4±0.8 g/kg,在外界乾燥環境,系統能將絕對濕度調降至4.9±0.6 g/kg。觀測及計算結果顯示,系統在冷卻模式中,性能係數 (COP) 約為3.6,而在加熱模式時,外界潮濕環境與乾燥環境下之性能係數約分別為2及0.8。
This study observes performances of the hybrid liquid desiccant sys-tem (HLDS). The system controls the air humidity by using LiCl solution to remove the latent heat and then controls the air temperature by using the vapor compression refrigeration system. Different from the conventional air-conditioning system, this system controls the air humidity and temperature independently. In addition, this system uses the removal heat from the condenser of the vapor compression refrigeration system to restore LiCl solution back to the initial state for absorption. This is an energy-efficiency approach to heat LiCl solution. This study mainly observes the humidity and temperature conditions of the supply air loop at each stage with the heating and cooling modes of HLDS from March 1st to June 30th in 2016. This study observes the influences of different supply air conditions on the indoor air performances, and compares the relationship between the electricity power consumption of the system and the outdoor air conditions, namely humidity and temperature.
During the dehumidification process, HLDS absorbs the water vapor in air by using the LiCl solution, instead of cooling down the air below the dew point temperature. HLDS has two modes: a cooling mode for the summer, and a heating mode for the winter. In cooling mode, it regulates absolute humidity of conditioned air to 9.5±1.5 g/kg. In the heating mode, it regulates the absolute humidity of conditioned air to 6.4±0.8 g/kg for the wet day case. However, for the dry day case, a very low value of absolute humidity 4.9±0.6 g/kg is maintained. According to the observation results, the coefficient of performance (COP) of HLDS is about 3.6 in the cooling mode, and the COP is about 2 for the wet day case and about 0.8 for the dry day case, respectively, in the heating mode.
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