溶液除湿器间歇运行的可行性研究

Feasibility study on intermittent operation of solution dehumidifier

为解决溶液除湿器运行过程中的空气带液问题,提出一种送风过程和喷淋过程分开进行的除湿器间歇式运行的方法。建立了除湿器数值模型,通过实验数据和模拟数据对比,验证了模型的可行性,基于该模型,研究了溶液除湿器的填料静持液量、填料高度和空气入口参数对间歇运行系统除湿效果的影响;为保证间歇式运行满足除湿需求,且送风连续,设计了四种不同的送风制度,对不同送风制度的运行效果进行了模拟。结果表明,采用该间歇式溶液除湿方法时,应将填料静持液量控制在4.575~6.100 kg/kg范围内,填料高度控制在0.45~0.75 m范围内;该间歇运行方法能解决传统溶液除湿器运行时的空气带液问题;入口空气处于低温高湿状态(如温度为20℃,相对含湿量为95%),除湿效果最佳;并联交错送风制度运行除湿效果最佳,运行期间基本保持除湿率大于5 g/kg,能够持续送风且满足除湿需求。

In order to solve the problem of air with liquid in the solution dehumidifier,a method of intermittent operation of the solution dehumidifier was proposed,which separated the air supply from the solution spray.The numerical model of dehumidifier was established,and the feasibility of the model was verified by comparing the experimental data and simulation data.Based on the model,the influence of operation parameters and design parameters of intermittent solution dehumidifier on dehumidification performance was studied and the operation effect of different air supply systems was simulated.The results showed that the static liquid holding capacity should be controlled in the range of 4.575~6.100 kg/kg and the packing height should be controlled in the range of 0.45~0.75 m,the intermittent operation method was more suitable to deal with the air with low temperature and high humidity(such as 20℃and RH95%),which can solve the problem of traditional solution dehumidification with liquid.The dehumidification effect of the parallel staggered air supply system was the best,during the operation,the dehumidification rate was more than 5 g/kg,which can supply air continuously and meet the dehumidification demand.