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空气除湿广泛应用于工业干燥和建筑的暖通空调领域,表冷除湿和溶液除湿方法消耗大量电能,节能潜力很大,受到广泛重视。本文提出一种低温余热和电驱动的双级溶液除湿系统,低温余热通过再生器将稀溶液转换成浓溶液,浓溶液在第一级除湿器完成空气的初步除湿,中等浓溶液经过电压缩制冷机组降温并提高吸收能力后,进入第二级除湿器进行深度除湿。双级溶液除湿系统与表冷除湿系统相比,耗电量减少21.29%,双级溶液除湿系统消耗的余热的折合发电效率可达到2.11%。通过对双级溶液除湿系统以及参比系统进行平衡分析,揭示了双级溶液除湿系统节能的主要原因。本研究为低温余热高效利用,减少电力消耗提供一种新型技术方案。
Air dehumidification is widely used in the field of industrial dryers and HVAC in buildings. The method of surface dehumidification and solution dehumidification consumes a large amount of electric energy and has great potential for energy saving and is widely valued. In this paper, a dual-stage solution dehumidification system with low temperature waste heat and electric drive is proposed. The low temperature waste heat is converted into a dilute solution through a regenerator. The concentrated solution is used to dehumidify the air in the first dehumidifier. The medium- After the unit is cooled down and the absorption capacity is increased, it enters the second stage dehumidifier for deep dehumidification. Two-stage solution dehumidification system and table cold dehumidification system, the power consumption decreased by 21.29%, two-stage solution dehumidification system waste heat equivalent power generation efficiency can reach 2.11%. By analyzing the two-stage solution dehumidification system and the reference system, the main reason for energy saving of the two-stage solution dehumidification system is revealed. This study provides a new technical solution for efficient use of low temperature waste heat and reduction of power consumption.