两种液体吸湿剂的除湿性能比较  

Comparison of dehumidification performance of two liquid desiccants

作　　者：易晓勤[1] 刘晓华[1] 

机构地区：[1]清华大学建筑技术科学系,北京100084

出　　处：《中国科技论文在线》2009年第7期522-526,共5页

基　　金：国家自然科学基金资助项目(50778094);华南理工大学亚热带建筑科学国家重点实验室基金资助项目(2008KA06)

摘　　要：对分别以溴化锂(LiBr)和氯化锂(LiCl)溶液为吸湿剂的除湿器性能进行了测试,得到了2种溶液在除湿工况下的性能数据。并将实验数据分别拟合成了关于进口参数的除湿量经验公式。基于经验公式,分析比较了2种溶液在相同的除湿装置、空气进口参数、溶液质量流量、等效溶液进口状态(温度和水蒸气分压力分别对应相等)下的除湿性能。在实验工况范围内,LiCl溶液的除湿量均高于LiBr溶液的除湿量,即LiCl溶液的除湿效果优于LiBr溶液的除湿效果。The dehumidification performance of LiBr aqueous solution and LiCl aqueous solution was tested in packed-bed dehumidifier. A series of experimental dehumidification data of the two desiccants were obtained and two experiential formulas were fitted according to the testing data. The dehumidification performance of the two desiccants was compared based on the formulas in the same conditions which refered to the conditions with the same device,the same air flow rate,the same air inlet parameters,the same solution mass flow rate,and the same equivalent solution inlet parameters （same temperature and vapor pressure）. The dehumidification rate of LiCl aqueous solution is higher than that of LiBr aqueous solution.

关 键 词：液体吸湿剂 溴化锂溶液 氯化锂溶液 除湿性能 

分 类 号：TU834.9[建筑科学—供热、供燃气、通风及空调工程]