搭建了以泡沫铜翅片换热器为核心的烟气水分回收实验台，研究了冷却水进口温度、烟气雷诺数及烟气中水蒸气体积分数对该换热器水回收特性和换热特性的影响,基于实验数据，利用多元回归拟合得到对流换热的关联式，其预测值与实验值误差在6%以内。结果表明：水蒸气体积分数增大可以显著提升水回收特性，而冷却水进口温度及烟气雷诺数对其影响很小；冷却水进口温度与烟气雷诺数对换热效率的影响较大，冷却水进口温度与换热效率成反比，烟气雷诺数与之成正比，而水蒸气体积分数对其影响较小；实验获得的最大冷凝水产率为7.68 kg/h，最大冷凝率为56.94%，最大换热效率为96.95%。

A flue gas moisture recovery test bench with foam copper fin heat exchanger as the core was built.The influence of inlet temperature of cooling water,Reynolds number of flue gas and volume fraction of vapor in flue gas on the water recovery and heat transfer characteristics of the heat exchanger were studied.Finally,based on the experimental data,the correlation formula of convective heat transfer was obtained by using multiple regression fitting,and the deviation between the predicted value and the experimental value was within 6%.The results revealed that the increase in water vapor volume fraction could significantly improve the water recovery characteristics,while the inlet temperature of cooling water and flue gas Reynolds number had little effect on it.Cooling water inlet temperature and flue gas Reynolds number had a great influence on heat transfer efficiency.The cooling water inlet temperature was inversely proportional to the heat transfer efficiency.The Reynolds number of the flue gas was proportional to it,and the water vapor volume fraction had little effect on it.Based on the selected parameters,the maximum condensate collection rate was 7.68 kg/h,the maximum condensation rate was 56.94%,and the maximum heat transfer efficiency was 96.95%.

TK2

国家自然科学基金（21546014）; 上海市自然科学基金（14ZＲ1417800）;上海市科委项目（18DZ1202004）