除濕輪式除濕機乃利用吸濕劑對水汽之吸濕能力,直接將空氣中水分吸附或吸收於材料內,當吸水後再利用熱能將材料內部之水分脫去再生,並將水汽凝結於熱交換器內達到除濕效果。除濕輪式相較於壓縮機式除濕機除了較為環保,且具有空氣清淨、可適用於低溫環境等優點,然目前針對其狀態監測分析之研究尚不足,在擬定節能策略或是系統升級時缺乏定性定量之根據。本文針對除濕輪除濕機狀態進行分析,將蒐集到除濕輪內部各點溫度、環境溫濕度、除濕量與時間等數據帶入質量與能量守恆方程式評估,並藉由EES(Engineering Equation Solver)軟體分析,可反推出除濕輪內部各點之狀態與理論最高效率、目前效率等資訊。並探討各類吸濕劑,評估高分子吸濕材料應用於除濕輪式除濕機之可行性。
The desiccant wheel was used in desiccant dehumidifiers to adsorb/absorb and remove water vapor from the humid air, which was usually regenerated by a heating process to restore its water uptake capacity. Compare to the compressor dehumidifier, desiccant dehumidifiers have some advantages such as environmental friendly, air cleaning ability, low temperature operating capability. However, only a few studies focus on the condition monitoring of desiccant dehumidifiers. The lack of qualitative and quantitative data caused the difficulty to make a proper energy-saving strategy or system updating plan. In this study, the condition analysis for the commercial desiccant dehumidifier is performed with EES (engineering equation solver). After collecting the data of environment humidity and temperature, monitoring several temperature points inside the dehumidifier, and weighting the amount of water collected in the operating time, the other information such as energy efficiency, theoretical efficiency, air volume flow rate and humidity in all the setting points could be estimated by using the conservation of mass and energy balance equation. In addition, the feasibility of water-absorbent polymers as desiccant applying to the desiccant dehumidifiers is also discussed.