IDEAS home Printed from https://ideas.repec.org/a/gam/jeners/v13y2020i7p1560-d337998.html
   My bibliography  Save this article

Numerical Analysis of Aerodynamic Characteristics of Exhaust Passage with Consideration of Wet Steam Effect in a Supercritical Steam Turbine

Author

Listed:
  • Qing Xu

    (School of Mechanical and Power Engineering, Guangdong Ocean University, Zhanjiang 524088, China
    Southern Marine Science and Engineering Guangdong Laboratory (Zhanjiang), Zhanjiang 524088, China
    Shenzhen Institute of Guangdong Ocean University, Shenzhen 518108, China)

  • Aqiang Lin

    (School of Mechanical and Power Engineering, Guangdong Ocean University, Zhanjiang 524088, China
    College of Power and Energy Engineering, Harbin Engineering University, Harbin 150001, China)

  • Yuhang Cai

    (College of Power and Energy Engineering, Harbin Engineering University, Harbin 150001, China)

  • Naseem Ahmad

    (College of Power and Energy Engineering, Harbin Engineering University, Harbin 150001, China)

  • Yu Duan

    (College of Power and Energy Engineering, Harbin Engineering University, Harbin 150001, China)

  • Chen Liu

    (College of Power and Energy Engineering, Harbin Engineering University, Harbin 150001, China)

Abstract

To investigate the aerodynamic performance of exhaust passage under multi-phase flow, an actual case is conducted in the low-pressure double exhaust passages of 600 MW steam turbine. Then, the flow field is compared and analyzed with and without the built-in extraction pipelines based on the Eulerian–Eulerian homogenous medium multiphase method. Results show that the upstream swirling flow and downstream mixed swirling flow are the main causes to induce the entropy-increase in the exhaust passage. Moreover, the flow loss and static-pressure recovery ability in the exhaust hood are greater than those in the condenser neck. Compared with the flow field without the steam extraction pipelines, the entropy-increase increases, the static pressure recovery coefficient decreases, and the spontaneous condensation rates of wet steam decrease in the downstream area of the pipelines. With the increase of steam turbine loads, an increment in entropy-increase in the exhaust passage is 0.98 J/(kg·K) lower than that without steam extraction pipelines. Moreover, the incrementing range of uniformity coefficient is increased from 14.5% to 40.9% at the condenser neck outlet. It can be concluded that the built-in exhaustion pipeline can improve the aerodynamic performance of exhaust passage and better reflect the real state of the flow field. These research results can serve as a reference for turbine passage design.

Suggested Citation

  • Qing Xu & Aqiang Lin & Yuhang Cai & Naseem Ahmad & Yu Duan & Chen Liu, 2020. "Numerical Analysis of Aerodynamic Characteristics of Exhaust Passage with Consideration of Wet Steam Effect in a Supercritical Steam Turbine," Energies, MDPI, vol. 13(7), pages 1-15, March.
    • Handle: RePEc:gam:jeners:v:13:y:2020:i:7:p:1560-:d:337998
    as

    Download full text from publisher

    File URL: https://www.mdpi.com/1996-1073/13/7/1560/pdf
    Download Restriction: no
    File URL: https://www.mdpi.com/1996-1073/13/7/1560/
    Download Restriction: no
    ---><---

    References listed on IDEAS

    as
    1. Han, Xu & Zeng, Wei & Han, Zhonghe, 2019. "Investigation of the comprehensive performance of turbine stator cascades with heating endwall fences," Energy, Elsevier, vol. 174(C), pages 1188-1199.
    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. Wang, Zhiduo & Feng, Zhenping & Zhang, Xiaobo & Peng, Jingbo & Zhang, Fei & Wu, Xing, 2022. "Improving cooling performance and robustness of NGV endwall film cooling design using micro-scale ribs considering incidence effects," Energy, Elsevier, vol. 253(C).
    2. Aliabadi, Mohammad Ali Faghih & Lakzian, Esmail & Khazaei, Iman & Jahangiri, Ali, 2020. "A comprehensive investigation of finding the best location for hot steam injection into the wet steam turbine blade cascade," Energy, Elsevier, vol. 190(C).
    3. Zhang, Guojie & Dykas, Sławomir & Li, Pan & Li, Hang & Wang, Junlei, 2020. "Accurate condensing steam flow modeling in the ejector of the solar-driven refrigeration system," Energy, Elsevier, vol. 212(C).
    4. Momeni Dolatabadi, Amir & Moslehi, Jamshid & Saffari Pour, Mohsen & Mousavi Ajarostaghi, Seyed Soheil & Poncet, Sébastien & Arıcı, Müslüm, 2022. "Modified model of reduction condensing losses strategy into the wet steam flow considering efficient energy of steam turbine based on injection of nano-droplets," Energy, Elsevier, vol. 242(C).
    5. Ansari, Mehran & Esfahanian, Vahid & Izadi, Mohammad Javad & Bashi, Hosein & Tavakoli, Alireza & Kordi, Mohammad, 2023. "Implementation of hot steam injection in steam turbine design: A novel mean-line method coupled with multi-objective optimization and neural network," Energy, Elsevier, vol. 283(C).
    6. Xue, Zhanpu & Wang, Wei & Fang, Liqing & Zhou, Jingbo, 2020. "Numerical simulation on structural dynamics of 5 MW wind turbine," Renewable Energy, Elsevier, vol. 162(C), pages 222-233.
    7. Han, Zhonghe & Xiang, Peng, 2020. "Modeling condensate throttling to improve the load change performance of cogeneration units," Energy, Elsevier, vol. 192(C).
    8. Bian, Jiang & Cao, Xuewen & Teng, Lin & Sun, Yuan & Gao, Song, 2019. "Effects of inlet parameters on the supersonic condensation and swirling characteristics of binary natural gas mixture," Energy, Elsevier, vol. 188(C).
    9. Zhang, Guojie & Wang, Xiaogang & Jin, Zunlong & Dykas, Sławomir & Smołka, Krystian, 2023. "Numerical study of the loss and power prediction based on a modified non-equilibrium condensation model in a 200 MW industrial-scale steam turbine under different operation conditions," Energy, Elsevier, vol. 275(C).
    10. Guodong Yi & Huifang Zhou & Lemiao Qiu & Jundi Wu, 2020. "Geometry-Load Based Hybrid Correction Method for the Pre-Deformation Design of a Steam Turbine Blade," Energies, MDPI, vol. 13(10), pages 1-14, May.
    11. Ansari, Mehran & Esfahanian, Vahid & Izadi, Mohammad Javad & Tavakoli, Alireza & Bashi, Hosein & Kordi, Mohammad, 2024. "Development of a new expression for predicting wet steam loss coefficient in steam turbines based on CFD and symbolic regression," Energy, Elsevier, vol. 304(C).

    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:13:y:2020:i:7:p:1560-:d:337998. 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.