AP1000核电机组巨型冷却塔型体优化数值计算  

Structure Optimization for Cooling Tower of an AP1000 Nuclear Power Plant

作　　者：周兰欣[1] 马少帅[1] 弓学敏 孙会亮[1] 

机构地区：[1]华北电力大学电站设备状态监测与控制教育部重点实验室,保定071003 [2]保定华电电力设计研究院,保定071003

出　　处：《动力工程学报》2012年第12期984-989,共6页Journal of Chinese Society of Power Engineering

摘　　要：根据气水两相间热质传递原理,利用Fluent数值计算软件建立了AP1000核电机组用20 000m2淋水面积巨型冷却塔的三维计算模型,对双曲线塔筒的母线方程中的特征值及喉部半径的最优取值进行了计算验证,综合分析了特征值及喉部半径对塔内流场、进塔风量、蒸发水量和平均出塔水温的影响,得到了210m高巨型冷却塔的最优型体结构参数.计算结果表明:喉部半径与塔底半径的比值r0/r2=0.6～0.7、塔筒母线方程中的曲率特征值α=0.17～0.18时,冷却塔运行最优.Based on heat and mass transfer theory of air-water two phase flow, a 3D numerical model was established using Fluent software for the cooling tower with 20 000 m2 spray area of an AP1000 nuclear power plant. The characteristic value of generatrix equation for a hyperbola cooling tower and its optimized throat radius were calculated, while their influences on the flow field, inlet air flow, evaporation rate and outlet water temperature studied, during which optimal structural parameters of the 210 m high tower were obtained. Results show that optimal operation performance may be achieved for the cooling tower at a radius ratio of throat to bottom in 0.6-0.7, and a characteristic value of generatrix equation in 0. 17-0. 18.

关 键 词：核电机组 冷却塔 结构优化 母线方程 数值计算 

分 类 号：TL353.1[核科学技术—核技术及应用]