超大型海水冷却塔盐沉积影响数值模拟研究  

Numerical simulation study on salt depositionin huge salt water cooling towers

作　　者：杨杰 李陆军[2] 梁梓琦 宋小军[2] YANG Jie;LI Lujun;LIANG Ziqi;SONG Xiaojun(China Nuclear Power Engineering Co.Ltd.,Guangdong Shenzhen 518100;China Institute of Water Resources and Hydropower Research,Beijing 100038)

机构地区：[1]中广核工程有限公司,广东深圳518100 [2]中国水利水电科学研究院,北京100038

出　　处：《辐射防护》2024年第5期476-482,共7页Radiation Protection

摘　　要：针对核电项目中的大型海水冷却塔,采用三维数值模型,结合厂址气象数据、冷却塔设计参数、总图布置以及周围环境特征,研究了2座超大型自然通风海水冷却塔在建筑物、自然风相互作用下的冷却塔飘滴扩散迁移特征和盐沉积量。结果表明,当环境风向与塔排平行时,出口热空气相互叠加形成一股气流,有利于减少飘滴和盐沉积对环境的影响;粒径大于550μm的飘滴不能从高位冷却塔出口逸出;2台核电机组正常运行工况时,盐沉积量一般不会对植物造成损坏。A three-dimensional numerical simulation model for salt water cooling tower was established to study the characteristics of drifts and salt deposition in nuclear power project.In the model,site meteorological data,design parameters of cooling tower,general layout and environmental characteristics are considered.The results show that when the natural wind direction is parallel to the tower row,two hot air streams are superimposed on each other as one,which is beneficial to reducing the influence of drifts and salt deposition in the environment.The drifts with particle size greater than 550μm can not escape from the outlet of cooling towers.For normal operation of 2 nuclear power units at the same site,the salt deposition will not cause damage to plants.

关 键 词：飘滴 盐沉积 海水冷却塔 环境风 数值模拟 

分 类 号：X822.7[环境科学与工程—环境工程]