Mapping of the thermodynamic performance of the supercritical CO2 cycle and optimisation for a small modular reactor and a sodium-cooled fast reactor

Pham, Hong-Son; Alpy, N.; Ferrasse, Jean‐Henry; Boutin, Olivier; Quenaut, J.; Tothill, Mark; Haubensack, D.; Saéz, Manuel Alcántara

doi:10.1016/j.energy.2015.05.022

Cited by 63 publications

(24 citation statements)

References 22 publications

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“…However, net efficiency takes into consideration parasitic losses due to electrical generation and pumping energy required at the PRC stage Eq. (21).…”

Section: Mathematical Modellingmentioning

confidence: 95%

“…Several arrangements have been proposed for the closed loop sCO 2 Brayton cycles such as original simple regenerative proposed by Feher [19], the partial-cooling proposed by Angelino [20], recompression cycle [5], the reheated recompression and intercooled recompression [7,21] or configurations including an ejector [22]. However, the recompression Brayton cycle is expected to be the most promising arrangement due to its simplicity and high efficiency.…”

Section: Power Cycle Descriptionmentioning

confidence: 97%

See 1 more Smart Citation

Optimization of a recompression supercritical carbon dioxide cycle for an innovative central receiver solar power plant

Reyes-Belmonte

Sebastián

Romero

et al. 2016

Energy

162

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“…However, net efficiency takes into consideration parasitic losses due to electrical generation and pumping energy required at the PRC stage Eq. (21).…”

Section: Mathematical Modellingmentioning

confidence: 95%

Section: Power Cycle Descriptionmentioning

confidence: 97%

Optimization of a recompression supercritical carbon dioxide cycle for an innovative central receiver solar power plant

Reyes-Belmonte

Sebastián

Romero

et al. 2016

Energy

162

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“…ere are also other Brayton cycle configurations, for example, intercooling, double recompression or reheating S-CO 2 Brayton cycle [17]. e benefits of these Brayton cycle is still under investigation.…”

Section: Description Of Typical S-co 2 Brayton Cycle Configurationmentioning

confidence: 99%

Supercritical CO₂ Brayton Cycle Design for Small Modular Reactor with a Thermodynamic Analysis Solver

Gao

Zhang

et al. 2020

Science and Technology of Nuclear Installations

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Coupling supercritical carbon dioxide (S-CO 2 ) 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-CO 2 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-CO 2 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.

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“…The light-water reactor (LWR) is currently the world's dominant nuclear reactor type. 4,5 Recent decades have witnessed unprecedented development in fast reactor technology, but the mainstream fast reactors (ie, LMFRs) are still dogged by problems that delay the licensing and rapid expansion of this technology. 1,2 LMFRs are characterized by fast neutron spectra, a nuclear feature that increases the fissionto-capture ratio and the number of neutrons per fission.…”

Section: Introductionmentioning

confidence: 99%

“…3 To obtain a fast neutron spectrum, coolant materials with small neutron scattering cross sections (XSs) can be used, such as sodium, lead, and lead bismuth eutectic (LBE). 4,5 Recent decades have witnessed unprecedented development in fast reactor technology, but the mainstream fast reactors (ie, LMFRs) are still dogged by problems that delay the licensing and rapid expansion of this technology. For instance, although the sodium fast reactor (SFR) has long been viewed as a promising candidate for the development of fast neutron reactors due to its neutronics characteristics, 3 it is hindered by the reactivity of sodium with water and air.…”

Section: Introductionmentioning

confidence: 99%

Conceptual design of an innovative reduced moderation thorium‐fueled small modular reactor with heavy‐water coolant

et al. 2019

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Summary This paper presents an innovative conceptual design for small modular reactors, the reduced‐moderation small modular reactor (RMSMR), for the sustainable use of nuclear resources. The concept is established by a modification of the well‐understood pressurized water reactor technology. A reduced‐moderation lattice and heavy‐water coolant are used to yield an epithermal‐to‐fast neutron spectrum, which is beneficial for attaining a large conversion ratio and reducing the burnup reactivity swing throughout the core lifetime. Two‐dimensional pin cell and three‐dimensional core burnup calculations are performed to systematically analyze the neutronics influences of important parameters, such as the coolant type, moderator‐to‐fuel ratio, and fuel type. The RMSMR adopts a three‐zone uranium‐thorium dioxide fuel configuration to flatten the power distribution and ensure a negative void coefficient. The radial and axial blanket regions are found to enhance the breeding effect. The proposed RMSMR can sustain power generation of 100 MWe for 7 years without refueling and achieve a conversion ratio of 0.85 at the end of the cycle. Numerical simulations indicate that the proposed concept has satisfactory shutdown margins and reactivity coefficients and conservative thermal‐hydraulic safety. The RMSMR may be a promising candidate to fill the gap between light‐water reactors and fast breeder reactors.

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Mapping of the thermodynamic performance of the supercritical CO2 cycle and optimisation for a small modular reactor and a sodium-cooled fast reactor

Cited by 63 publications

References 22 publications

Optimization of a recompression supercritical carbon dioxide cycle for an innovative central receiver solar power plant

Optimization of a recompression supercritical carbon dioxide cycle for an innovative central receiver solar power plant

Supercritical CO₂ Brayton Cycle Design for Small Modular Reactor with a Thermodynamic Analysis Solver

Conceptual design of an innovative reduced moderation thorium‐fueled small modular reactor with heavy‐water coolant

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Mapping of the thermodynamic performance of the supercritical CO2 cycle and optimisation for a small modular reactor and a sodium-cooled fast reactor

Cited by 63 publications

References 22 publications

Optimization of a recompression supercritical carbon dioxide cycle for an innovative central receiver solar power plant

Optimization of a recompression supercritical carbon dioxide cycle for an innovative central receiver solar power plant

Supercritical CO2 Brayton Cycle Design for Small Modular Reactor with a Thermodynamic Analysis Solver

Conceptual design of an innovative reduced moderation thorium‐fueled small modular reactor with heavy‐water coolant

Contact Info

Product

Resources

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Supercritical CO₂ Brayton Cycle Design for Small Modular Reactor with a Thermodynamic Analysis Solver