直接热耦合增湿-去湿海水淡化过程数值模拟  

NUMERICAL SIMULATION ON THERMALLY COUPLED HUMIDIFICATION-DEHUMIDIFICATION DESALINATION PROCESS

作　　者：丁涛[1] 王世昌[1] 

机构地区：[1]天津大学化工学院,化学工程联合国家重点实验室,天津300072

出　　处：《水处理技术》2010年第2期39-43,48,共6页Technology of Water Treatment

基　　金：国家自然科学基金与中国节能投资公司联合资助重点项目(20236030)

摘　　要：直接热耦合增湿-去湿(TCHD)淡化能够利用太阳能等低位热能,特别适合在缺水岛屿和内陆偏远地区应用。发展了非饱和条件下的TCHD过程传热-传质数学模型,结合试验数据建立了TCHD过程蒸发侧气液相间传热系数和冷凝侧与蒸发侧间总传热系数的关联式,通过数值模拟研究了TCHD淡化柱内的湿度、温度、不凝气含量和总传热系数的变化规律,讨论了海水顶温变化对湿度、不凝气含量和总传热系数的影响。The thermally coupled humidification-dehumidification （TCHD） desalination process, which is possible of using low temperature energy such as the solar energy, is adapted to be applied in the water-scarce islands and remote inland area. In this paper the mathematical model for TCHD process, which is adapted for the unsaturated conditions, have been developed. The heat transfer coefficient at the evaporation side and the total heat transfer coefficient between the evaporation side and condensation side were correlated. By the numerical simulation, the profiles ofthe humidity, temperature, content of the noncondensable gas and total heat transfer coefficient in TCHD desalination column were investigated. Meanwhile, the effects of the top seawater temperature on humidity, content of the noncondensable gas and total heat transfer coefficient were discussed.

关 键 词：增湿-去湿 露点蒸发 海水淡化 数值模拟 

分 类 号：P747[天文地球—海洋科学]