Supercritical CO2 Brayton Cycle Design for Small Modular Reactor with a Thermodynamic Analysis Solver
发布时间：2025-04-30
点击次数：
- 发布时间：
- 2025-04-30
- 论文名称：
- Supercritical CO2 Brayton Cycle Design for Small Modular Reactor with a Thermodynamic Analysis Solver
- 发表刊物：
- Science and Technology of Nuclear Installations
- 摘要：
- Coupling supercritical carbon dioxide (S-CO2) Brayton cycle with Gen-IV reactor concepts could bring advantages of high
compactness and efficiency. /is study aims to design proper simple and recompression S-CO2 Brayton cycles working as the
indirect cooling system for a mediate-temperature lead fast reactor and quantify the Brayton cycle performance with different heat
rejection temperatures (from 32°C to 55°C) to investigate its potential use in different scenarios, like arid desert areas or areas with
abundant water supply. High-efficiency S-CO2 Brayton cycle could offset the power conversion efficiency decrease caused by low
core outlet temperature (which is 480°C in this study) and high compressor inlet temperature (which varies from 32°C to 55°C in
this study). A thermodynamic analysis solver is developed to provide the analysis tool. /e solver includes turbomachinery models
for compressor and turbine and heat exchanger models for recuperator and precooler. /e optimal design of simple Brayton cycle
and recompression Brayton cycle for the lead fast reactor under water-cooled and dry-cooled conditions are carried out with
consideration of recuperator temperature difference constraints and cycle efficiency. Optimal cycle efficiencies of 40.48% and
35.9% can be achieved for the recompression Brayton cycle and simple Brayton cycle under water-cooled condition. Optimal cycle
efficiencies of 34.36% and 32.6% can be achieved for the recompression Brayton cycle and simple Brayton cycle under dry-cooled
condition (compressor inlet temperature equals to 55°C). Increasing the dry cooling flow rate will be helpful to decrease the
compressor inlet temperature. Every 5°C decrease in the compressor inlet temperature will bring 1.2% cycle efficiency increase for
the recompression Brayton cycle and 0.7% cycle efficiency increase for the simple Brayton cycle. Helpful conclusions and advises
are proposed for designing the Brayton cycle for mediate-temperature nuclear applications in this paper.
- 合写作者：
- Wu Pan, Gao Chuntian, Huang Yanping, Zhang Dan, Shan Jianqiang
- 卷号：
- 2020
- 页面范围：
- 1-16
- 是否译文：
- 否
- 发表时间：
- 2020-01-24