哈尔滨工程大学学报2023，Vol.44Issue(12)：2087-2094,8.DOI:10.11990/jheu.202309007
核电高压给水加热器启动过程建模与仿真
Modeling and simulation of the start-up process of a high-pressure feed water heater in a nuclear power plant
摘要
Abstract
This study established a simulation model of a high-pressure feed water heater in a nuclear power plant based on a two-phase non-equilibrium model to investigate the effect of thermal inertia and temperature change rate of metal materials on the dynamic and energy consumption characteristics of high-pressure feed water heater during the start-up process.The start-up process of the high-pressure feed water heater was simulated,and the dynamic characteristics of the start-up process under the maximum temperature change and normal temperature change rates were analyzed,taking the opening of the extraction valve and the feed water enthalpy as the inlet disturbance boundary conditions.The results show that after starting the high-pressure feed water heater,the errors of the main parameters,such as shell side pressure,water level,and feed water outlet temperature,are less than 1%.To meet the limit of temperature change rate,the fastest change rate of extraction valve opening should not exceed 75.34%/h and should not exceed 37.24%/h under the normal variable operating condition.It has important guiding signifi-cance for the start-up process of high-pressure feed water heaters.The simulation model can provide a reference for the commissioning and operation optimization of the start-up process of the high-pressure feed water heater.关键词
高压给水加热器/启动过程/建模与仿真/动态特性/热惯性/温度变化速率/核电站/两相非平衡模型Key words
high-pressure feed water heater/start-up process/modeling and simulation/dynamic characteristic/thermal inertia/temperature change rate/nuclear power plant/two-phase non-equilibrium model分类
信息技术与安全科学引用本文复制引用
张志疆,田兆斐..核电高压给水加热器启动过程建模与仿真[J].哈尔滨工程大学学报,2023,44(12):2087-2094,8.基金项目
中核集团领创项目. （）
