溴化锂溶液除湿器性能的实验研究

对逆流、散装填料、LiBr溶液的除湿器进行实验研究,实验过程中溶液流量为800～1600 L.h-1,入口溶液浓度为49%～54%,温度为28～41℃,空塔气速为0.39～0.96 m.s-1,入口空气湿度为10～21 g.kg-1。采用除湿量和体积传质系数来描述除湿性能,分析了溶液和空气入口参数对除湿性能的影响,得出平均体积传质系数为1.0 kg.m-3.s-1,液气比为2.5～3时可获到较好的除湿效果。比较了不同填料的除湿性能,鲍尔环填料除湿效果较好。同时对除湿过程进行了能量守恒分析,表明实验测量数据的准确性。实验结果为溶液除湿系统的性能分析及设计提供了依据。

Experiment on performance of LiBr-liquid desiccant dehumidification

Experiments were carried out for a counter flow dehumidifier with random packing and LiBr solution when solution flow was 800—1600 L·h^-1 with inlet concentration and temperature of 49%—54%，and 28—41℃，respectively，and the air velocity of empty tower was 0.39—0.96 m·s^-1，inlet air humidity was 10—21 g·kg^-1.The performance of dehumidification was described by moisture removal and volumetric mass transfer coefficient.The impact of the solution and the air inlet parameters on the dehumidification performance were analysed.With an average volumetric mass transfer coefficient of 1.0 kg