IDEAS home Printed from https://ideas.repec.org/a/eee/energy/v341y2025ics0360544225050674.html

Thermodynamic benchmarking of sCO2 Allam cycle against alternative oxy-fuel cycles: A comparative analysis

Author

Listed:
  • Haq, Ihtishamul
  • Werner, Andreas
  • Haider, Markus

Abstract

To explore the potential of oxy-fuel technology, a detailed thermodynamic analysis is performed for four different oxy-fuel combustion cycles: the SCOC-CC, Matiant cycle, S-Graz cycle, and Allam cycle. Based on the literature data, these thermal cycles are modeled and simulated at full load using commercial software Aspen Plus with the same input and boundary conditions. The results show that the Allam cycle and S-Graz reach the highest net energy efficiency with 56.04 % and 53.19 %, respectively. The Matiant cycle and SCOC-CC have lower efficiencies at 50.02 % and 45.23 %, respectively. The exergy efficiency is also higher for the Allam cycle (52.87 %) and the S-Graz cycle (50.18 %). Moreover, the CCS efficiency penalty is comparatively higher for S-Graz, SCOC-CC, and Matiant, with 3.88 %, 1.78 %, and 1.70 %, respectively. This is primarily because of the lower condenser pressure than the Allam cycle, which has a penalty of 0.42 %. The ASU efficiency penalty is consistent at 10.31 % for all cycles due to the same delivery pressure, flow rate, and oxygen purity. However, in the Allam cycle, it is marginally higher by 0.71 ppt due to an extra oxygen compressor. Furthermore, exergy destruction and entropy generation rates are particularly significant in the combustor, turbine, recuperator and condenser across all cycles. The results also indicate that the turbine main parameters, such as inlet temperature, inlet pressure, outlet pressure, and condenser pressure, strongly influence the system overall performance. The Allam cycle generally stands out for its high thermal efficiency and simple configuration.

Suggested Citation

  • Haq, Ihtishamul & Werner, Andreas & Haider, Markus, 2025. "Thermodynamic benchmarking of sCO2 Allam cycle against alternative oxy-fuel cycles: A comparative analysis," Energy, Elsevier, vol. 341(C).
    • Handle: RePEc:eee:energy:v:341:y:2025:i:c:s0360544225050674
    DOI: 10.1016/j.energy.2025.139425
    as

    Download full text from publisher

    File URL: http://www.sciencedirect.com/science/article/pii/S0360544225050674
    Download Restriction: Full text for ScienceDirect subscribers only
    File URL: https://libkey.io/10.1016/j.energy.2025.139425?utm_source=ideas
    LibKey link: if access is restricted and if your library uses this service, LibKey will redirect you to where you can use your library subscription to access this item
    ---><---

    As the access to this document is restricted, you may want to

    for a different version of it.

    References listed on IDEAS

    as
    1. Najmus S. Sifat & Yousef Haseli, 2019. "A Critical Review of CO 2 Capture Technologies and Prospects for Clean Power Generation," Energies, MDPI, vol. 12(21), pages 1-33, October.
    2. Nikolay Rogalev & Andrey Rogalev & Vladimir Kindra & Olga Zlyvko & Pavel Bryzgunov, 2022. "Review of Closed SCO 2 and Semi-Closed Oxy–Fuel Combustion Power Cycles for Multi-Scale Power Generation in Terms of Energy, Ecology and Economic Efficiency," Energies, MDPI, vol. 15(23), pages 1-37, December.
    3. Luo, Jing & Emelogu, Ogechi & Morosuk, Tatiana & Tsatsaronis, George, 2021. "Exergy-based investigation of a coal-fired allam cycle," Energy, Elsevier, vol. 218(C).
    4. Scaccabarozzi, Roberto & Gatti, Manuele & Martelli, Emanuele, 2016. "Thermodynamic analysis and numerical optimization of the NET Power oxy-combustion cycle," Applied Energy, Elsevier, vol. 178(C), pages 505-526.
    Full references (including those not matched with items on IDEAS)

    Most related items

    These are the items that most often cite the same works as this one and are cited by the same works as this one.
    1. Fu, Yidan & Cai, Lei & Qi, Chenyu & Zhai, Jiangfeng, 2024. "Thermodynamic and economic analyses of the biomass gasification Allam cycle integrated with compressed carbon energy storage," Energy, Elsevier, vol. 303(C).
    2. Xin, Tuantuan & Xu, Cheng & Yang, Yongping & Kindra, Vladimir & Rogalev, Andrey, 2023. "A new process splitting analytical method for the coal-based Allam cycle: Thermodynamic assessment and process integration," Energy, Elsevier, vol. 267(C).
    3. Miao, Zheng & Tian, Mengmeng & Wang, Chaozheng & Xu, Jinliang, 2025. "Thermodynamic analysis of a novel high-efficiency coal-based sCO2 power cycle combining semi-closed oxy-combustion cycle with sCO2 Brayton cycle," Energy, Elsevier, vol. 334(C).
    4. Fabrizio Reale, 2023. "The Allam Cycle: A Review of Numerical Modeling Approaches," Energies, MDPI, vol. 16(22), pages 1-22, November.
    5. Xin, Tuantuan & Zhang, Yifei & Li, Xikang & Xu, Hongyu & Xu, Cheng, 2024. "A novel coal-based Allam cycle coupled to CO2 gasification with improved thermodynamic and economic performance," Energy, Elsevier, vol. 293(C).
    6. Lorenzo Colleoni & Alessio Sindoni & Silvia Ravelli, 2023. "Comprehensive Thermodynamic Evaluation of the Natural Gas-Fired Allam Cycle at Full Load," Energies, MDPI, vol. 16(6), pages 1-19, March.
    7. Sun, Enhui & Ji, Hongfu & Wang, Xiangren & Ma, Wenjing & Zhang, Lei & Xu, Jinliang, 2023. "Proposal of multistage mass storage process to approach isothermal heat rejection of semi-closed S–CO2 cycle," Energy, Elsevier, vol. 270(C).
    8. Kumar, Laveet & Sleiti, Ahmad K. & Al-Ammari, Wahib A. & Hassan, Ibrahim & Rezaei-Gomari, S. & Rahman, Mohammad Azizur, 2025. "Thermo-economic analysis of flare gas recovery for power and clean water production using integrated concentrated solar power and direct oxy-fuel combustion," Energy, Elsevier, vol. 335(C).
    9. Jeddizahed, Javad & Webley, Paul A. & Hughes, Thomas J., 2024. "Integrating alkaline electrolysis with oxyfuel combustion for hydrogen and electricity production," Applied Energy, Elsevier, vol. 361(C).
    10. Yan, Ru & Zhou, Zining & Fu, Yidan & Wang, Rui & Cai, Lei, 2025. "Thermodynamic, economic, and environmental analysis of a biomass gasification power plant based on the Allam cycle," Energy, Elsevier, vol. 314(C).
    11. Guo, Hao & Xu, Hongyu & Xu, Cheng & Xin, Tuantuan, 2025. "Off-design performance analysis and comparison of a coal-based semi-closed supercritical CO2 cycle under different operational strategies," Energy, Elsevier, vol. 315(C).
    12. Xin, Tuantuan & Yang, Wei & Li, Sixuan & Xu, Cheng & Yang, Yongping, 2025. "Development of a novel coal-fueled nearly zero emission semi-closed supercritical CO2 cycle with the net efficiency above 50 % based on the process splitting method," Energy, Elsevier, vol. 318(C).
    13. Kim, Taehyun & Oh, Sebin & Kim, Dohee & Park, Jinwoo, 2025. "Achieving near-zero emissions and cost-effective hydrogen production through the Allam cycle and solid oxide electrolysis cells integration," Energy, Elsevier, vol. 335(C).
    14. Subramanian, Navaneethan & Madejski, Paweł, 2023. "Analysis of CO2 capture process from flue-gases in combined cycle gas turbine power plant using post-combustion capture technology," Energy, Elsevier, vol. 282(C).
    15. Kim, Yungeon & Kim, Taehyun & Lee, Inkyu & Park, Jinwoo, 2025. "Liquid air energy storage system with oxy-fuel combustion for clean energy supply: Comprehensive energy solutions for power, heating, cooling, and carbon capture," Applied Energy, Elsevier, vol. 379(C).
    16. Vyacheslav V. Rodaev & Svetlana S. Razlivalova, 2020. "The Zr-Doped CaO CO 2 Sorbent Fabricated by Wet High-Energy Milling," Energies, MDPI, vol. 13(16), pages 1-7, August.
    17. Martelli, Emanuele & Freschini, Marco & Zatti, Matteo, 2020. "Optimization of renewable energy subsidy and carbon tax for multi energy systems using bilevel programming," Applied Energy, Elsevier, vol. 267(C).
    18. Mohammadpour, Mohammadreza & Houshfar, Ehsan & Ashjaee, Mehdi & Mohammadpour, Amirreza, 2021. "Energy and exergy analysis of biogas fired regenerative gas turbine cycle with CO2 recirculation for oxy-fuel combustion power generation," Energy, Elsevier, vol. 220(C).
    19. Daniele Candelaresi & Giuseppe Spazzafumo, 2023. "Production of Substitute Natural Gas Integrated with Allam Cycle for Power Generation," Energies, MDPI, vol. 16(5), pages 1-17, February.
    20. Fabrizio Reale & Raffaela Calabria & Patrizio Massoli, 2023. "Performance Analysis of WHR Systems for Marine Applications Based on sCO 2 Gas Turbine and ORC," Energies, MDPI, vol. 16(11), pages 1-19, May.

    More about this item

    Keywords

    ;
    ;
    ;
    ;
    ;
    ;
    ;

    JEL classification:

    Statistics

    Access and download statistics

    Corrections

    All material on this site has been provided by the respective publishers and authors. You can help correct errors and omissions. When requesting a correction, please mention this item's handle: RePEc:eee:energy:v:341:y:2025:i:c:s0360544225050674. See general information about how to correct material in RePEc.

    If you have authored this item and are not yet registered with RePEc, we encourage you to do it here. This allows to link your profile to this item. It also allows you to accept potential citations to this item that we are uncertain about.

    If CitEc recognized a bibliographic reference but did not link an item in RePEc to it, you can help with this form .

    If you know of missing items citing this one, you can help us creating those links by adding the relevant references in the same way as above, for each refering item. If you are a registered author of this item, you may also want to check the "citations" tab in your RePEc Author Service profile, as there may be some citations waiting for confirmation.

    For technical questions regarding this item, or to correct its authors, title, abstract, bibliographic or download information, contact: Catherine Liu (email available below). General contact details of provider: http://www.journals.elsevier.com/energy .

    Please note that corrections may take a couple of weeks to filter through the various RePEc services.

    IDEAS is a RePEc service. RePEc uses bibliographic data supplied by the respective publishers.