溴化锂溶液除湿系统再生过程实验研究

Experiment on lithium bromide solution regeneration in desiccant process

溶液除湿技术是解决空调热湿解耦控制以及将废热与太阳能引入空调的有效途径。溶液再生则是溶液除湿的一个关键过程。设计了一套溴化锂溶液再生实验装置,对溶液流量、进口溶液温度、空气流量、进口空气温度、进口空气相对湿度对系统的再生性能进行了实验研究。结果表明:对于一定结构参数和进出口溶液、空气参数的再生装置,溶液流量存在一个最佳值使得溶液的再生效果达到最优,大于或小于这个流量都不利于再生过程的进行。

Liquid desiccant technology is significant to solve the problem of decoupling control of heat and humidity in the air conditioning system and is suitable for use with waste heat and solar energy. The regeneration of liquid desiccant is a key issue for the technology. A lithium bromide solution （LiBr） regeneration apparatus was designed and constructed and experiment study was carried out. The influences of solution mass flow rate, solution inlet temperature, air mass flow rate, air inlet temperature and relative humidity on the regeneration performance were investigated. The results show that there is an optimum solution mass flow rate on the condition of constant solution inlet temperature, air inlet temperature and relative humidity. And the difference of inlet and outlet concentration of LiBr solution reaches its maximum value with the optimum solution mass flow rate.