核电站孔道式蒸汽发生器热工分析及换热性能研究
Thermal engineering analysis and heat transfer performance of duct-type steam generator in nuclear power plant
汪垠 1张双铭 2李莹 3王强 3邱超 3王彤 2杨海瑞2
作者信息
- 1. 中核能源科技有限公司,北京 100193;清华大学核能与新能源技术研究院,北京 100084
- 2. 清华大学能源与动力工程系,北京 100084
- 3. 中核能源科技有限公司,北京 100193
- 折叠
摘要
为满足核电站提高蒸汽参数以获得更好的发电效率及经济性的发展需求,提出了一种适用于高温气冷堆超超临界参数下的孔道式蒸汽发生器.介绍了孔道式蒸汽发生器结构的主要特点,分析了该结构在换热性能、运行安全、生产成本等方面的优势.通过建立理论计算模型,对该蒸汽发生器采用直流逆流换热方式下的轴向、径向、准三维温度分布等参数进行了热工分析及换热性能研究.计算结果表明:该孔道式蒸汽发生器以对流传热及热传导的换热方式为主,温度分布分段明显,换热性能优异,符合相关换热要求.该研究可为核电站蒸汽发生器的设计及研发提供参考.
Abstract
To improve steam parameters for better power generation efficiency and economy and meet the development needs of nuclear power plants,a duct-type steam generator is proposed,which is suitable for high-temperature gas-cooled reactors with ultra-supercritical parameters.The main features of the duct-type steam generator's structure are introduced,and the advantages of this structure in terms of heat transfer performance,operation safety,and production cost are analyzed.Through the establishment of a theoretical calculation model,thermal engineering analysis and heat transfer performance study of axial,radial,and quasi-three-dimensional temperature distributions and other parameters of the steam generator with direct countercurrent heat transfer mode are carried out.The calculation results show that,the duct-type steam generator is mainly based on convection heat transfer mode,with obvious temperature distribution segments and excellent heat transfer performance,which meets the relevant heat transfer requirements.This study can provide a reference for design and development of steam generators in nuclear power plants.
关键词
蒸汽发生器/孔道式结构/温度分布/传热系数Key words
steam generator/duct-type structure/temperature distribution/heat transfer coefficient引用本文复制引用
基金项目
中核集团集中研发项目(ZHJTJZYFWD2020)
出版年
2024
国家科技期刊平台
NSTL
万方数据