Supercritical CO2 Brayton Cycle Design for Small Modular Reactor with a Thermodynamic Analysis Solver
Coupling supercritical carbon dioxide (S-CO2) Brayton cycle with Gen-IV reactor concepts could bring advantages of high compactness and efficiency. This study aims to design proper simple and recompression S-CO2 Brayton cycles working as the indirect cooling system for a mediate-temperature lead fas...
Saved in:
| Main Authors: | , , , , |
|---|---|
| Format: | Article |
| Language: | English |
| Published: |
Wiley
2020-01-01
|
| Series: | Science and Technology of Nuclear Installations |
| Online Access: | http://dx.doi.org/10.1155/2020/5945718 |
| Tags: |
Add Tag
No Tags, Be the first to tag this record!
|
| _version_ | 1832566488596217856 |
|---|---|
| author | Pan Wu Chuntian Gao Yanping Huang Dan Zhang Jianqiang Shan |
| author_facet | Pan Wu Chuntian Gao Yanping Huang Dan Zhang Jianqiang Shan |
| author_sort | Pan Wu |
| collection | DOAJ |
| description | Coupling supercritical carbon dioxide (S-CO2) Brayton cycle with Gen-IV reactor concepts could bring advantages of high compactness and efficiency. This 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. The solver includes turbomachinery models for compressor and turbine and heat exchanger models for recuperator and precooler. The 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. |
| format | Article |
| id | doaj-art-7ef25f25310c41de914e67c5e92a57bf |
| institution | Kabale University |
| issn | 1687-6075 1687-6083 |
| language | English |
| publishDate | 2020-01-01 |
| publisher | Wiley |
| record_format | Article |
| series | Science and Technology of Nuclear Installations |
| spelling | doaj-art-7ef25f25310c41de914e67c5e92a57bf2025-02-03T01:04:06ZengWileyScience and Technology of Nuclear Installations1687-60751687-60832020-01-01202010.1155/2020/59457185945718Supercritical CO2 Brayton Cycle Design for Small Modular Reactor with a Thermodynamic Analysis SolverPan Wu0Chuntian Gao1Yanping Huang2Dan Zhang3Jianqiang Shan4School of Nuclear Science and Technology, Xi’an Jiaotong University, No. 28 Xianning West Road, Xi’an, Shaanxi, ChinaSchool of Nuclear Science and Technology, Xi’an Jiaotong University, No. 28 Xianning West Road, Xi’an, Shaanxi, ChinaCNNC Key Laboratory on Nuclear Reactor Thermal Hydraulics Technology, Nuclear Power Institute of China, Chengdu 610041, ChinaScience and Technology on Reactor System Design Technology Laboratory, Nuclear Power Institute of China, Chengdu 610041, ChinaSchool of Nuclear Science and Technology, Xi’an Jiaotong University, No. 28 Xianning West Road, Xi’an, Shaanxi, ChinaCoupling supercritical carbon dioxide (S-CO2) Brayton cycle with Gen-IV reactor concepts could bring advantages of high compactness and efficiency. This 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. The solver includes turbomachinery models for compressor and turbine and heat exchanger models for recuperator and precooler. The 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.http://dx.doi.org/10.1155/2020/5945718 |
| spellingShingle | Pan Wu Chuntian Gao Yanping Huang Dan Zhang Jianqiang Shan Supercritical CO2 Brayton Cycle Design for Small Modular Reactor with a Thermodynamic Analysis Solver Science and Technology of Nuclear Installations |
| title | Supercritical CO2 Brayton Cycle Design for Small Modular Reactor with a Thermodynamic Analysis Solver |
| title_full | Supercritical CO2 Brayton Cycle Design for Small Modular Reactor with a Thermodynamic Analysis Solver |
| title_fullStr | Supercritical CO2 Brayton Cycle Design for Small Modular Reactor with a Thermodynamic Analysis Solver |
| title_full_unstemmed | Supercritical CO2 Brayton Cycle Design for Small Modular Reactor with a Thermodynamic Analysis Solver |
| title_short | Supercritical CO2 Brayton Cycle Design for Small Modular Reactor with a Thermodynamic Analysis Solver |
| title_sort | supercritical co2 brayton cycle design for small modular reactor with a thermodynamic analysis solver |
| url | http://dx.doi.org/10.1155/2020/5945718 |
| work_keys_str_mv | AT panwu supercriticalco2braytoncycledesignforsmallmodularreactorwithathermodynamicanalysissolver AT chuntiangao supercriticalco2braytoncycledesignforsmallmodularreactorwithathermodynamicanalysissolver AT yanpinghuang supercriticalco2braytoncycledesignforsmallmodularreactorwithathermodynamicanalysissolver AT danzhang supercriticalco2braytoncycledesignforsmallmodularreactorwithathermodynamicanalysissolver AT jianqiangshan supercriticalco2braytoncycledesignforsmallmodularreactorwithathermodynamicanalysissolver |