Supercritical CO2 Brayton cycle: A state-of-the-art review

Liu, Yaping; Wang, Ying; Huang, Diangui

doi:10.1016/j.energy.2019.115900

Cited by 234 publications

(37 citation statements)

References 74 publications

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“…The carbon dioxide heat carrier has a low critical temperature of 30.98 • C and a pressure of 7.38 MPa (Figure 1). The low carbon dioxide critical temperature is near to the ambient atmosphere, which allows the working fluid compression near the saturation line (the CO 2 density is quite high at the near-critical parameters) [8,9], reducing the compressor work and the temperature of heat removed from the cycle without the working fluid condensing. Besides, carbon dioxide is less aggressive than water and shows its corrosion activity only in the presence of moisture content in the working fluid or with a water film on a metal surface.…”

Section: Introduction 1promising Way To Increase Efficiency and Decrease The Capital Cost Of Nuclear Power Plantsmentioning

confidence: 99%

Structural and Parametric Optimization of S–CO2 Nuclear Power Plants

Rogalev

Kindra

et al. 2021

Entropy

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The transition to the use of supercritical carbon dioxide as a working fluid for power generation units will significantly reduce the equipment′s overall dimensions while increasing fuel efficiency and environmental safety. Structural and parametric optimization of S–CO2 nuclear power plants was carried out to ensure the maximum efficiency of electricity production. Based on the results of mathematical modeling, it was found that the transition to a carbon dioxide working fluid for the nuclear power plant with the BREST–OD–300 reactor leads to an increase of efficiency from 39.8 to 43.1%. Nuclear power plant transition from the Rankine water cycle to the carbon dioxide Brayton cycle with recompression is reasonable at a working fluid temperature above 455 °C due to the carbon dioxide cycle′s more effective regeneration system.

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Section: Introduction 1promising Way To Increase Efficiency and Decrease The Capital Cost Of Nuclear Power Plantsmentioning

confidence: 99%

Structural and Parametric Optimization of S–CO2 Nuclear Power Plants

Rogalev

Kindra

et al. 2021

Entropy

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“…Despite progress to date, the mass scale deployment of CO 2 energy systems is still hindered by technology challenges [5,6]. Latest advances in the technology have been recently reviewed for refrigeration applications [7][8][9][10][11][12][13], heat pumps [14][15][16][17][18] and the power generation sector [19][20][21][22][23][24][25][26].…”

Section: Introductionmentioning

confidence: 99%

Overview and outlook of research and innovation in energy systems with carbon dioxide as the working fluid

Bianchi

Besagni

Tassou

et al. 2021

Applied Thermal Engineering

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Carbon dioxide (CO 2 , R744) is a natural working fluid with interesting thermophysical properties that have stimulated strong attention by the academic and industrial communities for a broad range of energy applications. The technology readiness level of CO 2 -based energy systems is very diverse due to the increasing consideration that the fluid has been receiving since the 1990s. Hence, the state of the art in CO 2 energy research spans from fundamental thermofluid and chemistry science to commercial system innovations. After a brief compendium on ongoing activities, this paper proposes a roadmap for CO 2 energy research with reference to the cooling, heating and power sectors. The key knowledge gaps and the main challenges at system and component levels are critically discussed. Pathways to advance the understanding and the technological maturity of CO 2 energy systems are also outlined.

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“…Supercritical CO 2 cycles have recently found a widespread interest both in the research and the industrial world. Particularly, in [19], an extensive review of the architecture, the components, and the optimal cycle condition is carried out. The TEES solution has been mainly proposed for large electrical energy storage, using sensible heat hot rocks for the high-temperature heat storage; this can indeed be an attractive solution for large utilities and grid operators, as a substitute or in support of pumped hydro.…”

Section: Introductionmentioning

confidence: 99%

Exergo-Economic and Environmental Analysis of a Solar Integrated Thermo-Electric Storage

et al. 2020

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Renewable energies are often subject to stochastic resources and daily cycles. Energy storage systems are consequently applied to provide a solution for the mismatch between power production possibility and its utilization period. In this study, a solar integrated thermo-electric energy storage (S-TEES) is analyzed both from an economic and environmental point of view. The analyzed power plant with energy storage includes three main cycles, a supercritical CO2 power cycle, a heat pump and a refrigeration cycle, indirectly connected by sensible heat storages. The hot reservoir is pressurized water at 120/160 °C, while the cold reservoir is a mixture of water and ethylene glycol, maintained at −10/−20 °C. Additionally, the power cycle’s evaporator section rests on a solar-heated intermediate temperature (95/40 °C) heat reservoir. Exergo-economic and exergo-environmental analyses are performed to identify the most critical components of the system and to obtain the levelized cost of electricity (LCOE), as well as the environmental indicators of the system. Both economic and environmental analyses revealed that solar energy converting devices are burdened with the highest impact indicators. According to the results of exergo-economic analysis, it turned out that average annual LCOE of S-TEES can be more than two times higher than the regular electricity prices. However, the true features of the S-TEES system should be only fully assessed if the economic results are balanced with environmental analysis. Life cycle assessment (LCA) revealed that the proposed S-TEES system has about two times lower environmental impact than referential hydrogen storage systems compared in the study.

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Supercritical CO2 Brayton cycle: A state-of-the-art review

Cited by 234 publications

References 74 publications

Structural and Parametric Optimization of S–CO2 Nuclear Power Plants

Structural and Parametric Optimization of S–CO2 Nuclear Power Plants

Overview and outlook of research and innovation in energy systems with carbon dioxide as the working fluid

Exergo-Economic and Environmental Analysis of a Solar Integrated Thermo-Electric Storage

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