水資源匱乏問題已困擾社會大眾多年，尤其在部分乾燥地帶甚是嚴重，然而這些地方因為遠離河川、湖泊，又受地形與氣候影響，使得人均可用水資源遠低於其他地方。大氣取水為一項具有高潛力的取水辦法，透過從空氣中擷取水分出來，解決乾燥地帶缺水的問題。本研究運用超吸水薄膜並設計機構來執行大氣取水，以薄膜吸收空氣中的水氣，並利用太陽能使其再生，將釋放的水氣用於提濃機構內部，讓機構能於冷卻端冷凝出水，將這些水分蒐集起來即可使用。研究選擇具有最佳吸水量與速度的水凝膠膜，以輻射熱的原理吸收太陽能用於加熱，整體過程中消耗的能源為綠色能源，對於地球本身無任何消耗，因此可視同此機構具有低耗能取水的特點，在能源與取水的比較上優於海水淡化等其他取水技術。在本文中所使用的機構能夠0.54 Wh取得0.205 g的水，甚至能在無耗能的情況下取得0.124 g的水。在未來若能增加薄膜的量或是提升冷凝效率即可獲得更多的水分，讓大氣取水的取水量上升，解決乾燥地帶缺水可用的問題。

The scarcity of water resources has problemed society for many years, especially in some arid regions. However, in these areas, due to their distance from rivers and lakes and the influence of terrain and climate, per capita available water resources are much lower than in other places. Atmospheric water harvesting is a highly promising method to obtain water, where water is captured from the air to address water scarcity in arid regions. This study applies super hygroscopic polymer films and a designed device to execute atmospheric water harvesting. The film absorbs moisture from the air and regenerates with solar power. The released water vapor is utilized to enhance water vapor concentration within the system, subsequently condensing water on the cooling side and facilitating collection. The study selects hydrogel films with optimal water absorption capacity and speed. Solar energy from radiation is selected to heat the films, causing no depletion of the Earth's resources. So, this device can be considered as having the feature of collecting water with low energy consumption. Compared to other water extraction technologies like seawater desalination, it has a better cost-performance ratio between energy usage and water absorption. In this study, the device used was able to collect 0.205 g of water while consuming 0.54 Wh of energy, and even 0.124 g of water with no energy consumption. In the future, it is possible to obtain more water through atmospheric water harvesting by either increasing the number of films or improving condensation efficiency, and this could help address water scarcity issues in arid regions.

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