A newly proposed supercritical carbon dioxide Brayton cycle configuration to enhance energy sources integration capability

Saeed, Muhammad; Kim, Man-Hoe

doi:10.1016/j.energy.2021.121868

Cited by 23 publications

(3 citation statements)

References 37 publications

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“…Intercooling is the traditional method to minimize the load of the compressor and increase the thermal efficiency of the S-CO 2 cycle. Increasing the number of stages results in the compression process approaching nearisothermal conditions at the compressor's inlet temperature [54]. However, intercooling (Figure 8e) does not hold much appeal in S-CO 2 cycles due to the minimal efficiency enhancement it provides [18].…”

Section: S-co 2 Layoutsmentioning

confidence: 99%

Power Generation with Renewable Energy and Advanced Supercritical CO2 Thermodynamic Power Cycles: A Review

Zhang,

2023

Energies

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Supercritical CO2 (S-CO2) thermodynamic power cycles have been considerably investigated in the applications of fossil fuel and nuclear power generation systems, considering their superior characteristics such as compactness, sustainability, cost-effectiveness, environmentally friendly working fluid and high thermal efficiency. They can be potentially integrated and applied with various renewable energy systems for low-carbon power generation, so extensive studies in these areas have also been conducted substantially. However, there is a shortage of reviews that specifically concentrate on the integrations of S-CO2 with renewable energy, encompassing biomass, solar, geothermal and waste heat. It is thus necessary to provide an update and overview of the development of S-CO2 renewable energy systems and identify technology and integration opportunities for different types of renewable resources. Correspondingly, this paper not only summarizes the advantages of CO2 working fluid, design layouts of S-CO2 cycles and classifications of renewable energies to be integrated but also reviews the recent research activities and studies carried out worldwide on advanced S-CO2 power cycles with renewable energy. Moreover, the performance and development of various systems are well grouped and discussed.

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Section: S-co 2 Layoutsmentioning

confidence: 99%

Power Generation with Renewable Energy and Advanced Supercritical CO2 Thermodynamic Power Cycles: A Review

Zhang,

2023

Energies

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“…Figure 5 visually portrays the various arrangements of fractionated flow S-CO 2 cycles. The split-flow S-CO 2 cycle configurations encompass the recompression S-CO 2 cycle (a), the modified recompression S-CO 2 cycle (b), the preheat-equipped S-CO 2 cycle (c), and the split expansion S-CO 2 cycle, as exhibited in Figure 5 (Guo et al, 2022;Saeed & Kim, 2022). The split expansion S-CO 2 cycle encompasses three configurations: the split expansion S-CO 2 cycle (d), the fractional expansion S-CO 2 cycle (e), and the S-CO 2 cycle with fractional expansion (f).…”

Section: Split-flow S-co 2 Cyclesmentioning

confidence: 99%

Thermodynamic Modelling, Technical and Operational Issues of Supercritical Carbon Dioxide Power Generation Cycles for Industrial Applications: A Literature Review

Aredokou,

Chegnimonhan,

Tiam

et al. 2023

IRA-JAS

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Future electricity production systems will be able to harness the power of supercritical carbon dioxide (S-CO2) as it moves through thermal cycles. It serves the same goal as sources of energy such as fossil fuels, nuclear power, solar power, and the recovery of waste heat (or surplus heat from industrial processes). When the heat source temperature is between 350°C and 800°C, CO2 as a working fluid exhibits excellent thermal efficiency. Its novel technological benefits over conventional steam Rankine cycles, such as the use of small turbo gear and compact heat exchangers, have captured the attention of scientists. It has excellent operational flexibility and may induce significantly cheaper energy costs. Aligned with these goals, this paper presents a panoramic work, exploring the current state of the art of S-CO2 power generation, with a particular emphasis on the technical and operational perplexities. After providing a comprehensive overview of the thermodynamic principles that underpin this study, the foundation is established for an engaging discourse on the continuous research and development of supercritical carbon dioxide (S-CO2) cycles in power generation. Upon delving into the thermodynamic facets of CO2 that propel this investigation, the spotlight is cast upon dissecting the existing state of research and development of S-CO2 cycles in power generation before transitioning into encapsulating the principal domains of application and noteworthy thermodynamic modelling inquiries of S-CO2 cycles. The present advancements and hurdles within the primary application areas are succinctly summarized, while future research trends are identified.

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“…With the increasingly severe energy shortage and environmental damage problems, clean and high‐efficient solar‐based energy utilization and consumption has gradually attracted widespread attention for the past few years 1,2 . Under the carbon‐peaking and carbon‐neutral strategies by 2030 and 2060, 3 the supercritical carbon dioxide (sCO 2 )‐based Brayton cycle 4,5 and thermal system has attracted more and more attention as an advanced power cycle due to its high efficiency, simple layout, and compact structure 6,7 . Many countries are now putting more effort into developing these advanced technologies, such as heat exchanger, 8 turbomachinery, 9 heat pump, 10 and heat sink 11 .…”

Section: Introductionmentioning

confidence: 99%

Comparison and evaluation of supercritical CO ₂ cooling performance in horizontal tubes with variable cross‐section by field synergy theory

Hao

et al. 2022

Intl J of Energy Research

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Summary The cooling/heating performance improvement of supercritical carbon dioxide (sCO2) in heat exchange tube with changing cross‐section is significant and crucial for solar‐driven advanced thermal systems' application and development. The study introduced and constructed straight, diverging, and converging horizontal tubes with the changing cross‐section. The analyzation and evaluation of the sCO2 cooling performance used the combination of SST k‐ω turbulence model‐based numerical method and the field synergy theory, including the influence of tube cross‐sectional shape, inlet pressure and temperature on the cooling performance. As these simulation results indicate, the converging tube can enhance the flow field's synergy and increase the heat transfer ability by 13.15% under cooling conditions. Nevertheless, the heat transfer ability of the sCO2 decreases in the diverging tube under cooling conditions. Besides, the total heat transfer rate rises and the surface heat transfer coefficient has the opposite trends when the inlet temperature increases. Meanwhile, when inlet pressure varies from 11 to 12 MPa, the total heat exchange and surface convective heat transfer coefficient are the maximum. In conclusion, a converging horizontal tube and a suitable inlet pressure can effectively improve the cooling performance of the sCO2. The converging cross‐section design will provide an alternative for its application in advanced thermal systems.

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A newly proposed supercritical carbon dioxide Brayton cycle configuration to enhance energy sources integration capability

Cited by 23 publications

References 37 publications

Power Generation with Renewable Energy and Advanced Supercritical CO2 Thermodynamic Power Cycles: A Review

Power Generation with Renewable Energy and Advanced Supercritical CO2 Thermodynamic Power Cycles: A Review

Thermodynamic Modelling, Technical and Operational Issues of Supercritical Carbon Dioxide Power Generation Cycles for Industrial Applications: A Literature Review

Comparison and evaluation of supercritical CO ₂ cooling performance in horizontal tubes with variable cross‐section by field synergy theory

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A newly proposed supercritical carbon dioxide Brayton cycle configuration to enhance energy sources integration capability

Cited by 23 publications

References 37 publications

Power Generation with Renewable Energy and Advanced Supercritical CO2 Thermodynamic Power Cycles: A Review

Power Generation with Renewable Energy and Advanced Supercritical CO2 Thermodynamic Power Cycles: A Review

Thermodynamic Modelling, Technical and Operational Issues of Supercritical Carbon Dioxide Power Generation Cycles for Industrial Applications: A Literature Review

Comparison and evaluation of supercritical CO 2 cooling performance in horizontal tubes with variable cross‐section by field synergy theory

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Comparison and evaluation of supercritical CO ₂ cooling performance in horizontal tubes with variable cross‐section by field synergy theory