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溶液除湿方式在节能领域有广阔的发展前景,对溶液除湿涉及的传热传质耦合过程进行研究可以完善相关理论知识。本文采用Fluent数值模拟方法,在渗透理论模型的基础上,从场协同的角度,利用协同角评价标准分析了不同工况下平板降膜溶液除湿过程。对不同入口速度、入口温度、入口浓度、入口含湿量进行了数值模拟。研究结果表明:选定工况范围内,浓度场和速度场的协同性随着入口溶液温度、入口空气流速的升高而减弱,随着入口空气含湿量、入口溶液浓度的增加而增强。该数值模拟为溶液除湿研究提供了新的研究角度。方差法分析得到各因素对协同性影响程度由大到小排序为溶液温度、溶液浓度、气流速度、空气含湿量。
The solution dehumidification method has broad prospects in the field of energy saving. Studying the heat and mass transfer coupling process involved in solution dehumidification can improve relevant theoretical knowledge. In this paper, Fluent numerical simulation method is used to analyze the dehumidification process of flat film falling film solution under different working conditions based on the theory of permeation model from the perspective of field coordination. The numerical simulation of different inlet velocity, inlet temperature, inlet concentration and inlet moisture content were carried out. The results show that the synergies of concentration field and velocity field decrease with the increase of inlet solution temperature and inlet air flow velocity in the range of selected conditions, and increase with the increase of inlet air humidity and inlet solution concentration. The numerical simulation provides a new research perspective for solution dehumidification. Variance analysis showed that the factors that affect the synergistic degree of descending order were solution temperature, solution concentration, air velocity and air moisture content.