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为探讨利用热空气中的废热用于溶液再生,对热空气用于氯化锂水溶液的顺流再生过程进行了实验研究,通过加热空气获得40～60℃热空气来模拟不同品位的废热空气,结合NTU-Le模型和实验数据计算得到了溶液再生过程耦合传热传质系数,分析了空气流量、空气温度和溶液流量对热空气用于溶液再生过程传热传质系数的影响,并对冷凝器排热之类的热空气用于溶液再生的热利用效率进行了分析,获得了溶液浓度、空气温度和流量对热空气用于溶液再生过程再生热效率的影响。
In order to explore the use of waste heat from hot air for solution regeneration, an experimental study was conducted on the downstream air regeneration process using hot air for lithium chloride solution. Hot air at 40-60 ℃ was heated to simulate waste heat air of different grades. The coupled heat and mass transfer coefficients were calculated by NTU-Le model and experimental data. The effects of air flow rate, air temperature and solution flow rate on heat and mass transfer coefficient of hot air in solution regeneration process were analyzed. The heat utilization efficiency of hot air such as heat rejection was analyzed. The effects of solution concentration, air temperature and flow rate on the regeneration thermal efficiency of hot air for solution regeneration were obtained.