IDEAS home Printed from https://ideas.repec.org/a/gam/jeners/v18y2025i17p4771-d1744541.html
   My bibliography  Save this article

Off-Design Performance Modeling of the Natural Gas-Fired Allam Cycle

Author

Listed:
  • Federico D’Ambrosio

    (Department of Engineering and Applied Sciences, University of Bergamo, Viale Marconi 5, 24044 Dalmine, Italy)

  • Lorenzo Colleoni

    (Independent Researcher, 24040 Bonate Sopra, Italy)

  • Silvia Ravelli

    (Department of Engineering and Applied Sciences, University of Bergamo, Viale Marconi 5, 24044 Dalmine, Italy)

Abstract

This work focuses on modeling the performance of the natural gas-fired Allam cycle under off-design conditions. Key thermodynamic parameters, such as turbine inlet pressure (TIP), turbine inlet temperature (TIT), and turbine outlet temperature (TOT), were evaluated at part-load and varying environmental conditions. In the former case, different control strategies were implemented in the simulation code (Thermoflex ® ) to reduce the power output. In the latter case, the impact of ambient temperature (T amb ) on the minimum cycle temperature (T min ) was evaluated. The ultimate goal is to predict the thermal efficiency (η th ) and its decrease due to partial load operation and warm climate, without thermal recovery from the air separation unit (ASU). With the most efficient partial load strategy, η th decreased from 50.4% at full load to 40.3% at about 30% load, at nominal T min . The penalty caused by the increase in T min due to hot weather, up to T amb = 30 °C, was significant at loads above 60%, but limited to 0.5 percentage points (pp).

Suggested Citation

  • Federico D’Ambrosio & Lorenzo Colleoni & Silvia Ravelli, 2025. "Off-Design Performance Modeling of the Natural Gas-Fired Allam Cycle," Energies, MDPI, vol. 18(17), pages 1-22, September.
    • Handle: RePEc:gam:jeners:v:18:y:2025:i:17:p:4771-:d:1744541
    as

    Download full text from publisher

    File URL: https://www.mdpi.com/1996-1073/18/17/4771/pdf
    Download Restriction: no
    File URL: https://www.mdpi.com/1996-1073/18/17/4771/
    Download Restriction: no
    ---><---

    References listed on IDEAS

    as
    1. Dan Fernandes & Song Wang & Qiang Xu & Russel Buss & Daniel Chen, 2019. "Process and Carbon Footprint Analyses of the Allam Cycle Power Plant Integrated with an Air Separation Unit," Clean Technol., MDPI, vol. 1(1), pages 1-16, October.
    2. Crespi, F. & Rodríguez de Arriba, P. & Sánchez, D. & Ayub, A. & Di Marcoberardino, G. & Invernizzi, C.M. & Martínez, G.S. & Iora, P. & Di Bona, D. & Binotti, M. & Manzolini, G., 2022. "Thermal efficiency gains enabled by using CO2 mixtures in supercritical power cycles," Energy, Elsevier, vol. 238(PC).
    3. 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.
    4. Fabrizio Reale, 2023. "The Allam Cycle: A Review of Numerical Modeling Approaches," Energies, MDPI, vol. 16(22), pages 1-22, November.
    5. 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. Daniarta, Sindu & Błasiak, Przemysław & Kolasiński, Piotr & Imre, Attila R., 2024. "Sustainability by means of cold energy utilisation-to-power conversion: A review," Renewable and Sustainable Energy Reviews, Elsevier, vol. 205(C).
    2. Naumov, Vladimir & Doninelli, Michele & Di Marcoberardino, Gioele & Iora, Paolo, 2025. "Solar tower power plants with CO2+SiCl4 mixtures transcritical cycles," Renewable Energy, Elsevier, vol. 243(C).
    3. 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).
    4. 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).
    5. 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).
    6. 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.
    7. 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.
    8. 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).
    9. Evangelia Pagona & Kyriaki Kalaitzidou & Vasileios Zaspalis & Anastasios Zouboulis & Manassis Mitrakas, 2022. "Effects of MgO and Fe 2 O 3 Addition for Upgrading the Refractory Characteristics of Magnesite Ore Mining Waste/By-Products," Clean Technol., MDPI, vol. 4(4), pages 1-24, October.
    10. Habib, Mohamed A. & Imteyaz, Binash & Nemitallah, Medhat A., 2020. "Second law analysis of premixed and non-premixed oxy-fuel combustion cycles utilizing oxygen separation membranes," Applied Energy, Elsevier, vol. 259(C).
    11. 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).
    12. Sleiti, Ahmad K. & Al-Ammari, Wahib A., 2021. "Off-design performance analysis of combined CSP power and direct oxy-combustion supercritical carbon dioxide cycles," Renewable Energy, Elsevier, vol. 180(C), pages 14-29.
    13. Aniket R. Khade & Vijaya D. Damodara & Daniel H. Chen, 2023. "Reduced Mechanism for Combustion of Ammonia and Natural Gas Mixtures," Clean Technol., MDPI, vol. 5(2), pages 1-13, April.
    14. Janusz Kotowicz & Sebastian Michalski & Mateusz Brzęczek, 2019. "The Characteristics of a Modern Oxy-Fuel Power Plant," Energies, MDPI, vol. 12(17), pages 1-34, September.
    15. Zhao, Yongming & Zhao, Lifeng & Wang, Bo & Zhang, Shijie & Chi, Jinling & Xiao, Yunhan, 2018. "Thermodynamic analysis of a novel dual expansion coal-fueled direct-fired supercritical carbon dioxide power cycle," Applied Energy, Elsevier, vol. 217(C), pages 480-495.
    16. Yang, Yuzhuo & Shi, Lingfeng & Yao, Yu & Zhang, Yonghao & He, Jingtao & Tian, Hua & Pei, Gang & Shu, Gequn, 2024. "Supercritical CO2 Brayton cycle for space exploration: New perspectives base on power density analysis," Energy, Elsevier, vol. 313(C).
    17. Sleiti, Ahmad K. & Al-Ammari, Wahib A. & Musharavati, Farayi, 2024. "Novel integrated system for power, hydrogen, and ammonia production using direct oxy-combustion sCO2 power cycle with automatic CO2 capture, water electrolyzer, and Haber-Bosch process," Energy, Elsevier, vol. 307(C).
    18. Crespi, Francesco & Gavagnin, Giacomo & Sánchez, David & Martínez, Gonzalo S., 2017. "Supercritical carbon dioxide cycles for power generation: A review," Applied Energy, Elsevier, vol. 195(C), pages 152-183.
    19. Sylwia Oleś & Jakub Mularski & Halina Pawlak-Kruczek & Abhishek K. Singh & Artur Pozarlik, 2025. "Assessment of Global and Detailed Chemical Kinetics in Supercritical Combustion for Hydrogen Gas Turbines," Energies, MDPI, vol. 18(13), pages 1-13, June.
    20. Fabrizio Reale & Patrizio Massoli, 2024. "A Hybrid Energy System Based on Externally Fired Micro Gas Turbines, Waste Heat Recovery and Gasification Systems: An Energetic and Exergetic Performance Analysis," Energies, MDPI, vol. 17(15), pages 1-16, July.

    More about this item

    Keywords

    ;
    ;
    ;
    ;
    ;

    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:gam:jeners:v:18:y:2025:i:17:p:4771-:d:1744541. 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: MDPI Indexing Manager (email available below). General contact details of provider: https://www.mdpi.com .

    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.