VVER核电机组热腿权重平均温度修正方法研究
Study on Modification Method of Hot Leg Weighted Average Temperature for VVER Unit
汪安平 1陈静 1王明军2
作者信息
- 1. 江苏核电有限公司,江苏 连云港 222042
- 2. 西安交通大学核科学与技术学院,陕西 西安 710049
- 折叠
摘要
针对 VVER核电机组一回路热平衡功率计算偏差较大的问题,基于堆内构件三维数值模拟,开展热腿平均温度修正方法研究.提出以特定温度范围内的质量流量份额为权重系数,分析多种运行工况下权重系数的变化规律,建立了一套简化的热腿权重平均温度修正方法,结果表明热腿温度的计算值与机组实际运行时监测的热电阻测量值符合较好.所提出的修正方法有效、可靠,提高了热腿平均温度的准确性,改善了一回路热平衡功率计算偏差.
Abstract
In view of the problem of large deviation in heat balance power calculation of the primary loop for VVER nucle-ar power unit,study on method of modifying hot leg average temperature was carried out based on three-dimensional nu-merical simulation of reactor components.The mass flow rate within specific temperature range is used as the weight co-efficient. The change of weight coefficients obtained from various operating conditions was analyzed.A simplified modified method of the hot leg weighted average temperature was proposed.Results indicate that the hot leg temperature calculat-ed by numerical simulation coincides well with that measured by thermal resistance under actual operating conditions of the unit. The proposed modified method is effective and reliable and can facilitate improvement in accuracy of hot leg aver-age temperature and reduction in calculation deviation of heat balance power of the primary loop.
关键词
VVER机组/热腿平均温度/权重系数Key words
VVER unit/hot leg average temperature/weight coefficien引用本文复制引用
出版年
2024
NETL
NSTL
维普
万方数据