IDEAS home Printed from https://ideas.repec.org/a/eee/energy/v314y2025ics0360544224039161.html

Numerical study of energy losses in the energy conversion process of a cold model flue gas turbine based on entropy production method

Author

Listed:
  • Wan, Dehai
  • Wang, Jianjun

Abstract

A flue gas turbine system can recycle significant energy from oil refinery catalytic cracking. This study uses six degrees of freedom (6DOF) simulation in Fluent to model flue gas turbine energy conversion. The investigation explores energy loss mechanisms with entropy production theory for comprehensive analysis. A cold-state experimental platform with a model flue gas turbine-centrifugal pump was developed. The setup converts gas to mechanical energy with the turbine, and mechanical to fluid energy with the pump. The 6DOF simulation accuracy was verified with rotational speed, torque, and power. Particle Image Velocimetry (PIV) experiments validated 6DOF numerical simulation for flow field accuracy. The efficiency of converting gas energy into mechanical energy is approximately 8%–11 %, and the efficiency of converting mechanical energy into water energy is around 11%–20 %. The stator and rotor sections of the system presented high average volumetric entropy production rates, peaking at 7731 W/m³ and 4805 W/m³, respectively. The outlet section of the system can reach a maximum total entropy production rate of 0.3 W/K. The flow separation, tip leakage vortices, horseshoe vortices, and rotor-stator wake interaction all contribute to increased entropy production. This study provides substantial engineering guidance for optimizing the energy conversion efficiency of flue gas turbine.

Suggested Citation

  • Wan, Dehai & Wang, Jianjun, 2025. "Numerical study of energy losses in the energy conversion process of a cold model flue gas turbine based on entropy production method," Energy, Elsevier, vol. 314(C).
    • Handle: RePEc:eee:energy:v:314:y:2025:i:c:s0360544224039161
    DOI: 10.1016/j.energy.2024.134138
    as

    Download full text from publisher

    File URL: http://www.sciencedirect.com/science/article/pii/S0360544224039161
    Download Restriction: Full text for ScienceDirect subscribers only
    File URL: https://libkey.io/10.1016/j.energy.2024.134138?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. Ohiemi, Israel Enema & Sunsheng, Yang & Singh, Punit & Li, Yanjun & Osman, Fareed, 2023. "Evaluation of energy loss in a low-head axial flow turbine under different blade numbers using entropy production method," Energy, Elsevier, vol. 274(C).
    2. Yu, An & Tang, Yibo & Tang, Qinghong & Cai, Jianguo & Zhao, Lei & Ge, Xinfeng, 2022. "Energy analysis of Francis turbine for various mass flow rate conditions based on entropy production theory," Renewable Energy, Elsevier, vol. 183(C), pages 447-458.
    3. Wang, Zhiqi & Xie, Baoqi & Xia, Xiaoxia & Yang, Huya & Zuo, Qingsong & Liu, Zhipeng, 2022. "Energy loss of radial inflow turbine for organic Rankine cycle using mixture based on entropy production method," Energy, Elsevier, vol. 245(C).
    4. Asr, Mahdi Torabi & Nezhad, Erfan Zal & Mustapha, Faizal & Wiriadidjaja, Surjatin, 2016. "Study on start-up characteristics of H-Darrieus vertical axis wind turbines comprising NACA 4-digit series blade airfoils," Energy, Elsevier, vol. 112(C), pages 528-537.
    5. He, Jiawei & Si, Qiaorui & Sun, Wentao & Liu, Jinfeng & Miao, Senchun & Wang, Xiaohui & Wang, Peng & Wang, Chenguang, 2023. "Study on the energy loss characteristics of ultra-low specific speed PAT under different short blade lengths based on entropy production method," Energy, Elsevier, vol. 283(C).
    6. Lihui, Xu & Tao, Guo & Wenquan, Wang, 2022. "Effects of Vortex Structure on Hydraulic Loss in a Low Head Francis Turbine under Overall Operating Conditions Base on Entropy Production Method," Renewable Energy, Elsevier, vol. 198(C), pages 367-379.
    7. Ji, Leilei & Li, Wei & Shi, Weidong & Chang, Hao & Yang, Zhenyu, 2020. "Energy characteristics of mixed-flow pump under different tip clearances based on entropy production analysis," Energy, Elsevier, vol. 199(C).
    8. Wang, Zhiqi & Xie, Baoqi & Xia, Xiaoxia & Luo, Lan & Yang, Huya & Li, Xin, 2023. "Entropy production analysis of a radial inflow turbine with variable inlet guide vane for ORC application," Energy, Elsevier, vol. 265(C).
    9. Zhao, Yuanqi & Li, Deyou & Chang, Hong & Fu, Xiaolong & Wang, Hongjie & Qin, Daqing, 2023. "Suppression effect of bionic guide vanes with different parameters on the hump characteristics of pump-turbines based on entropy production theory," Energy, Elsevier, vol. 283(C).
    10. Pei, Ji & Shen, Jiawei & Wang, Wenjie & Yuan, Shouqi & Zhao, Jiantao, 2024. "Evaluating hydraulic dissipation in a reversible mixed-flow pump for micro-pumped hydro storage based on entropy production theory," Renewable Energy, Elsevier, vol. 225(C).
    11. Yu, Zhi-Feng & Wang, Wen-Quan & Yan, Yan & Liu, Xing-Shun, 2021. "Energy loss evaluation in a Francis turbine under overall operating conditions using entropy production method," Renewable Energy, Elsevier, vol. 169(C), pages 982-999.
    12. Zhou, Ling & Hang, Jianwei & Bai, Ling & Krzemianowski, Zbigniew & El-Emam, Mahmoud A. & Yasser, Eman & Agarwal, Ramesh, 2022. "Application of entropy production theory for energy losses and other investigation in pumps and turbines: A review," Applied Energy, Elsevier, vol. 318(C).
    13. Ji, Baifeng & Zhong, Kuanwei & Xiong, Qian & Qiu, Penghui & Zhang, Xu & Wang, Liang, 2022. "CFD simulations of aerodynamic characteristics for the three-blade NREL Phase VI wind turbine model," Energy, Elsevier, vol. 249(C).
    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. Pei, Ji & Shen, Jiawei & Wang, Wenjie & Yuan, Shouqi & Zhao, Jiantao, 2024. "Evaluating hydraulic dissipation in a reversible mixed-flow pump for micro-pumped hydro storage based on entropy production theory," Renewable Energy, Elsevier, vol. 225(C).
    2. Chen, Huazheng & Liu, Xiangsong & Lu, Yonggang & Fu, Qiang & Zhu, Rongsheng & Li, Huairui & Su, Haonan, 2024. "Evolution mechanism of internal flow in the hump region and hump optimization of axial-flow reactor coolant pump," Energy, Elsevier, vol. 311(C).
    3. Ren, Zhipeng & Li, Deyou & Zhou, Weixing & Liu, Jintao & Li, Yong, 2025. "Energy distribution and thermodynamic assessment of cavitating coolant flow in a micropump," Energy, Elsevier, vol. 340(C).
    4. Li, Zhenggui & Xu, Lixin & Wang, Dong & Li, Deyou & Li, Wangxu, 2023. "Simulation analysis of energy characteristics of flow field in the transition process of pump condition outage of pump-turbine," Renewable Energy, Elsevier, vol. 219(P1).
    5. Kan, Kan & Liu, Kunting & Xu, Zhe & Li, Zhixiang & Rossi, Mosè & Chen, Huixiang, 2025. "Fluid deformation induced energy loss of pump-turbines based on the transport of mean kinetic energy," Renewable Energy, Elsevier, vol. 248(C).
    6. Xu, Lihui & Guo, Tao, 2025. "Analysis of hydraulic stability of a Francis turbine under partial load conditions based on Liutex method and entropy production theory," Energy, Elsevier, vol. 328(C).
    7. Wei, Wei & Li, Xuesong & Ren, Xiaodong & Gu, Chunwei & Liu, Qinglong, 2025. "Assessment of subsonic turbine cascade flow field and numerical viscous loss using the power-loss method," Energy, Elsevier, vol. 335(C).
    8. Chang, Hao & Wang, Zengqiang & Peng, Guangjie & Shi, Weidong & Lin, Renyong & Zhou, Ling, 2025. "Role of wall roughness on energy dissipation and vortex dynamics in self-priming centrifugal pump: A study via entropy generation and Liutex vortex identification," Energy, Elsevier, vol. 337(C).
    9. Inhestern, Lukas Benjamin & Peitsch, Dieter & Paniagua, Guillermo, 2024. "Flow irreversibility and heat transfer effects on turbine efficiency," Applied Energy, Elsevier, vol. 353(PA).
    10. Gao, Junhao & Liu, Lei & Luo, Jinping & Zhou, Chenyu & Mao, Jiandong & Liu, Lijun, 2026. "Suppression of hump characteristics of low specific speed centrifugal pumps by the number of impeller blades based on entropy production theory and energy gradient method," Energy, Elsevier, vol. 342(C).
    11. Liu, Yunqi & Wang, Tao & Lei, Lei & Huang, Tengfei & Guo, Qing, 2025. "Vortex characteristics and energy loss analysis of a centrifugal pump as turbine based on velocity triangles," Energy, Elsevier, vol. 332(C).
    12. Yifan Zhi & Qian Huang & Haonan Su & Huairui Li & Huazheng Chen & Qidi Ke & Qiang Fu, 2025. "An Analysis of the Characteristics of Internal Flow Losses of Seawater Circulation Pumps in Nuclear Power Plants Based on the Entropy Production Theory," Energies, MDPI, vol. 18(8), pages 1-16, April.
    13. Wang, Xiao-Dong & Wang, Wen-Quan & Zhang, Chang-Bing & Xu, Yong, 2025. "Old wine in a new bottle: Energy loss evaluation in a six-nozzle Pelton turbine with entropy production theory," Energy, Elsevier, vol. 319(C).
    14. He, Jiawei & Si, Qiaorui & Sun, Wentao & Liu, Jinfeng & Miao, Senchun & Wang, Xiaohui & Wang, Peng & Wang, Chenguang, 2023. "Study on the energy loss characteristics of ultra-low specific speed PAT under different short blade lengths based on entropy production method," Energy, Elsevier, vol. 283(C).
    15. Yu, Shengping & Wang, Yuhu & Chen, Tairan & Li, Mingke & Zhang, Xiaoping & Huang, Biao & Xu, Jin & Wang, Guoyu, 2025. "An inclined groove and its optimization design method for improving the energy performance at the saddle zone of axial flow pumps," Energy, Elsevier, vol. 328(C).
    16. Wang, Zhe & Cao, Menglong & Tang, Haobo & Ji, Yulong & Han, Fenghui, 2024. "A global heat flow topology for revealing the synergistic effects of heat transfer and thermal power conversion in large scale systems: Methodology and case study," Energy, Elsevier, vol. 290(C).
    17. Yang, Gang & Shen, Xi & Shi, Lei & Zhang, Desheng & Zhao, Xutao & (Bart) van Esch, B.P.M., 2023. "Numerical investigation of hump characteristic improvement in a large vertical centrifugal pump with special emphasis on energy loss mechanism," Energy, Elsevier, vol. 273(C).
    18. Jin, Faye & Luo, Yongyao & Zhao, Qiang & Cao, Jiali & Wang, Zhengwei, 2023. "Energy loss analysis of transition simulation for a prototype reversible pump turbine during load rejection process," Energy, Elsevier, vol. 284(C).
    19. Lei, Shuaihao & Cheng, Li, 2025. "Investigation of transient effects and energy losses for an axial flow pump as turbine in pump mode's start-up," Energy, Elsevier, vol. 326(C).
    20. Jiao, Weixuan & Fan, Haotian & Xi, Xiaoyuan & Chen, Yang & Shen, Jiantao & Zhou, Lu & Jia, Xuanwen & Cheng, Li, 2026. "Study on the vortex dynamics and energy characteristics of the cone tip vortex under turbine operating conditions in low-head pumped storage systems," Energy, Elsevier, vol. 346(C).

    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:eee:energy:v:314:y:2025:i:c:s0360544224039161. 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.