摘要
本文旨在开发和验证基于系统分析程序(Software of Enriched Improvement on RELAP,SENIOR)的螺旋管换热器模型,以优化小型模块化反应堆(Small Modular Reactors,SMR)中的螺旋管直流蒸汽发生器(Helical Coil Once Through Steam Generator,HCOTSG)设计,并为一体化小堆的热工水力性能分析提供支持。本文采用控制体积法,针对螺旋管内复杂的流动和传热特性选取不同换热工况的经验关系式进行模拟,并通过上海交通大学通用热工水力设备回路(GETHY)台架获得的螺旋管换热器试验数据,对模型的准确性进行了验证。结果表明,SENIOR程序能够准确预测OTSG在不同工况下的热工水力性能,所得到的热工水力参数与试验数据吻合良好,总体误差小于2%。因此,SENIOR程序在一体化小堆设计中具有重要应用价值,能够为实现一体化小堆的优化设计和安全运行提供可靠的技术支持。
[Background]Small modular reactors(SMRs)have gained attention in recent decade due to their inherent safety,flexibility,and economic advantages while the once through steam generator(OTSG)plays an important role in SMR.[Purpose]This study aims to develop and validate a helical coil heat exchanger model based on the SENIOR system analysis program to optimize the design of the Helical Coil once-through steam generator(HCOTSG)within SMRs and support thermal-hydraulic performance analysis of integrated reactors.[Methods]The study took the helical coil OTSG as the research object,and the control volume method was employed to model its complex flow and heat transfer characteristics.Empirical correlations tailored to different heat transfer conditions were selected and integrated into the SENIOR program,a system analysis program independently developed by Shanghai Nuclear Engineering Research and Design Institute(SNERDI)for analyzing the thermal and hydraulic performance of HCOTSG.Experimental data from helical coil heat exchanger tests,including the GETHY(General Thermal-Hydraulic facility loop at Shanghai Jiaotong University)and an integrated performance test by SNERDI,were used for validation.Simulations were conducted under varying operational conditions,such as power levels from 0.15 MW to 4.8 MW,to assess the model's predictive accuracy.[Results]The SENIOR program accurately predicts the thermal-hydraulic performance of the HCOTSG,with tube-side outlet temperature errors within±4%in the GETHY tests and a maximum deviation of 5 K for core outlet temperature in the integrated performance tests.The overall error in the integrated performance tests remains within±2%,demonstrating consistent accuracy across key parameters.[Conclusions]The validated SENIOR model demonstrate high reliability for simulating HCOTSG performance,offering a robust tool for optimizing SMR designs.Its ability to align closely with experimental data under diverse conditions underscored its practical value for engineering applications.This work established a foundation for advancing the design and safety analysis of integrated small modular reactors in China.
作者
鲁真
李盛哲
葛莉
戚展飞
单建强
赵秀梅
杨子江
LU Zhen;LI Shengzhe;GE Li;QI Zhanfei;SHAN Jianqiang;ZHAO Xiumei;YANG Zijiang(School of Nuclear Science and Technology,Xi'an Jiaotong University,Xi'an 710049,China;Shanghai Nuclear Engineering Research and Design Institute Co.,Ltd.,Shanghai 200233,China)
出处
《核技术》
北大核心
2025年第12期111-119,共9页
Nuclear Techniques
关键词
螺旋管蒸汽发生器
热工水力
数值模拟
系统分析程序
Helical Coil once-through steam generator
Thermal-hydraulics
Numerical simulation
System analysis program
