IDEAS home Printed from https://ideas.repec.org/a/eee/energy/v218y2021ics0360544220325536.html
   My bibliography  Save this article

Thermodynamic optimization of the superheater during switching the load transient processes

Author

Listed:
  • Wang, Chaoyang
  • Liu, Ming
  • Zhao, Yongliang
  • Yan, Junjie

Abstract

The boiler superheater undergoes load cycling transients, once the thermal power plant participates in peak shaving. Thermodynamic optimization of a superheater is carried out by optimizing the flowrate/temperature matches between the hot and cold fluids during switching the load rate from 0.75 to 1.00. On the basis of a dynamic model of the superheater, the transient thermal performance is presented. Furthermore, the exergy delivery efficiency of the superheater was analyzed. The superheater outlet temperatures of hot fluid, metal wall, and cold fluid are highly affected when regulating work fluid inlet flowrates/temperatures. During switching the load transient, when increasing the hot fluid flowrate amplitude and variation rate by 50%, the average exergy efficiency (ηE,avg) of the superheater can improve by 1.04% and 0.13%, respectively. When increasing the cold fluid inlet temperature by 5%, ηE,avg can improve by 1.16%. When increasing the hot fluid inlet temperature by 5%, ηE,avg decreases by 0.74%. The exergy efficiency of the superheater is more sensitive to regulating temperature match than the flowrate match during switching the load transient process.

Suggested Citation

  • Wang, Chaoyang & Liu, Ming & Zhao, Yongliang & Yan, Junjie, 2021. "Thermodynamic optimization of the superheater during switching the load transient processes," Energy, Elsevier, vol. 218(C).
    • Handle: RePEc:eee:energy:v:218:y:2021:i:c:s0360544220325536
    DOI: 10.1016/j.energy.2020.119446
    as

    Download full text from publisher

    File URL: http://www.sciencedirect.com/science/article/pii/S0360544220325536
    Download Restriction: Full text for ScienceDirect subscribers only
    File URL: https://libkey.io/10.1016/j.energy.2020.119446?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 search for a different version of it.

    References listed on IDEAS

    as
    1. Wang, Chaoyang & Liu, Ming & Zhao, Yongliang & Chong, Daotong & Yan, Junjie, 2020. "Entropy generation distribution characteristics of a supercritical boiler superheater during transient processes," Energy, Elsevier, vol. 201(C).
    2. Wang, Chaoyang & Liu, Ming & Zhao, Yongliang & Wang, Zhu & Yan, Junjie, 2018. "Thermodynamics analysis on a heat exchanger unit during the transient processes based on the second law," Energy, Elsevier, vol. 165(PB), pages 622-633.
    3. Wang, Chaoyang & Qiao, Yongqiang & Liu, Ming & Zhao, Yongliang & Yan, Junjie, 2020. "Enhancing peak shaving capability by optimizing reheat-steam temperature control of a double-reheat boiler," Applied Energy, Elsevier, vol. 260(C).
    4. Vargas, J.V.C. & Bejan, A., 2000. "Thermodynamic optimization of the match between two streams with phase change," Energy, Elsevier, vol. 25(1), pages 15-33.
    5. Rao, R. Venkata & Saroj, Ankit, 2017. "Constrained economic optimization of shell-and-tube heat exchangers using elitist-Jaya algorithm," Energy, Elsevier, vol. 128(C), pages 785-800.
    6. Wang, Chaoyang & Zhao, Yongliang & Liu, Ming & Qiao, Yongqiang & Chong, Daotong & Yan, Junjie, 2018. "Peak shaving operational optimization of supercritical coal-fired power plants by revising control strategy for water-fuel ratio," Applied Energy, Elsevier, vol. 216(C), pages 212-223.
    7. Taler, Dawid & Taler, Jan & Wrona, Katarzyna, 2020. "Transient response of a plate-fin-and-tube heat exchanger considering different heat transfer coefficients in individual tube rows," Energy, Elsevier, vol. 195(C).
    8. Wolf-Peter Schill & Michael Pahle & Christian Gambardella, 2017. "Start-up costs of thermal power plants in markets with increasing shares of variable renewable generation," Nature Energy, Nature, vol. 2(6), pages 1-6, June.
    9. Zima, Wiesɬaw, 2001. "Numerical modeling of dynamics of steam superheaters," Energy, Elsevier, vol. 26(12), pages 1175-1184.
    10. Zima, Wiesław, 2019. "Simulation of rapid increase in the steam mass flow rate at a supercritical power boiler outlet," Energy, Elsevier, vol. 173(C), pages 995-1005.
    11. Granda, Mariusz & Trojan, Marcin & Taler, Dawid, 2020. "CFD analysis of steam superheater operation in steady and transient state," Energy, Elsevier, vol. 199(C).
    12. Zaversky, Fritz & Sánchez, Marcelino & Astrain, David, 2014. "Object-oriented modeling for the transient response simulation of multi-pass shell-and-tube heat exchangers as applied in active indirect thermal energy storage systems for concentrated solar power," Energy, Elsevier, vol. 65(C), pages 647-664.
    13. Feng, Huijun & Xie, Zhuojun & Chen, Lingen & Wu, Zhixiang & Xia, Shaojun, 2020. "Constructal design for supercharged boiler superheater," Energy, Elsevier, vol. 191(C).
    Full references (including those not matched with items on IDEAS)

    Citations

    Citations are extracted by the CitEc Project, subscribe to its RSS feed for this item.
    as


    Cited by:

    1. Zhang, Shunqi & Liu, Ming & Zhao, Yongliang & Liu, Jiping & Yan, Junjie, 2022. "Energy and exergy analyses of a parabolic trough concentrated solar power plant using molten salt during the start-up process," Energy, Elsevier, vol. 254(PC).

    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, Chaoyang & Liu, Ming & Zhao, Yongliang & Chong, Daotong & Yan, Junjie, 2020. "Entropy generation distribution characteristics of a supercritical boiler superheater during transient processes," Energy, Elsevier, vol. 201(C).
    2. Alsanousie, Abdurrahman A. & Elsamni, Osama A. & Attia, Abdelhamid E. & Elhelw, Mohamed, 2021. "Transient and troubleshoots management of aged small-scale steam power plants using Aspen Plus Dynamics," Energy, Elsevier, vol. 223(C).
    3. Zhu, Hengyi & Tan, Peng & He, Ziqian & Ma, Lun & Zhang, Cheng & Fang, Qingyan & Chen, Gang, 2023. "Revealing steam temperature characteristics for a double-reheat unit under coal calorific value variation," Energy, Elsevier, vol. 283(C).
    4. Wang, Chaoyang & Chen, Ming & Liu, Ming & Yan, Junjie, 2020. "Dynamic modeling and parameter analysis study on reversible solid oxide cells during mode switching transient processes," Applied Energy, Elsevier, vol. 263(C).
    5. Yan, Hui & Liu, Ming & Wang, Zhu & Zhang, Kezhen & Chong, Daotong & Yan, Junjie, 2023. "Flexibility enhancement of solar-aided coal-fired power plant under different direct normal irradiance conditions," Energy, Elsevier, vol. 262(PA).
    6. Zhang, Kezhen & Liu, Ming & Zhao, Yongliang & Wang, Chaoyang & Yan, Junjie, 2020. "Entropy generation versus transition time of heat exchanger during transient processes," Energy, Elsevier, vol. 200(C).
    7. Wang, Zhu & Liu, Ming & Zhao, Yongliang & Wang, Chaoyang & Chong, Daotong & Yan, Junjie, 2020. "Flexibility and efficiency enhancement for double-reheat coal-fired power plants by control optimization considering boiler heat storage," Energy, Elsevier, vol. 201(C).
    8. Liu, Ming & Wang, Shan & Zhao, Yongliang & Tang, Haiyu & Yan, Junjie, 2019. "Heat–power decoupling technologies for coal-fired CHP plants: Operation flexibility and thermodynamic performance," Energy, Elsevier, vol. 188(C).
    9. Zhu, Shahong & Zhang, Man & Huang, Yiqun & Wu, Yuxin & Yang, Hairui & Lyu, Junfu & Gao, Xinyu & Wang, Fengjun & Yue, Guangxi, 2019. "Thermodynamic analysis of a 660 MW ultra-supercritical CFB boiler unit," Energy, Elsevier, vol. 173(C), pages 352-363.
    10. Zhang, Shunqi & Liu, Ming & Ma, Yuegeng & Liu, Jiping & Yan, Junjie, 2021. "Flexibility assessment of a modified double-reheat Rankine cycle integrating a regenerative turbine during recuperative heater shutdown processes," Energy, Elsevier, vol. 233(C).
    11. Zhao, Yongliang & Liu, Ming & Wang, Chaoyang & Li, Xin & Chong, Daotong & Yan, Junjie, 2018. "Increasing operational flexibility of supercritical coal-fired power plants by regulating thermal system configuration during transient processes," Applied Energy, Elsevier, vol. 228(C), pages 2375-2386.
    12. Taler, Dawid & Taler, Jan & Wrona, Katarzyna, 2021. "New analytical-numerical method for modelling of tube cross-flow heat exchangers with complex flow systems," Energy, Elsevier, vol. 228(C).
    13. Yang, Tingting & Liu, Ziyuan & Zeng, Deliang & Zhu, Yansong, 2023. "Simulation and evaluation of flexible enhancement of thermal power unit coupled with flywheel energy storage array," Energy, Elsevier, vol. 281(C).
    14. Ioannis Avagianos & Dimitrios Rakopoulos & Sotirios Karellas & Emmanouil Kakaras, 2020. "Review of Process Modeling of Solid-Fuel Thermal Power Plants for Flexible and Off-Design Operation," Energies, MDPI, vol. 13(24), pages 1-41, December.
    15. Wang, Chaoyang & Qiao, Yongqiang & Liu, Ming & Zhao, Yongliang & Yan, Junjie, 2020. "Enhancing peak shaving capability by optimizing reheat-steam temperature control of a double-reheat boiler," Applied Energy, Elsevier, vol. 260(C).
    16. Zhao, Yongliang & Liu, Ming & Wang, Chaoyang & Wang, Zhu & Chong, Daotong & Yan, Junjie, 2019. "Exergy analysis of the regulating measures of operational flexibility in supercritical coal-fired power plants during transient processes," Applied Energy, Elsevier, vol. 253(C), pages 1-1.
    17. Liu, Ming & Ma, Guofeng & Wang, Shan & Wang, Yu & Yan, Junjie, 2021. "Thermo-economic comparison of heat–power decoupling technologies for combined heat and power plants when participating in a power-balancing service in an energy hub," Renewable and Sustainable Energy Reviews, Elsevier, vol. 152(C).
    18. Tang, Wei & Feng, Huijun & Chen, Lingen & Xie, Zhuojun & Shi, Junchao, 2021. "Constructal design for a boiler economizer," Energy, Elsevier, vol. 223(C).
    19. Cao, Lihua & Wang, Zhanzhou & Pan, Tongyang & Dong, Enfu & Hu, Pengfei & Liu, Miao & Ma, Tingshan, 2021. "Analysis on wind power accommodation ability and coal consumption of heat–power decoupling technologies for CHP units," Energy, Elsevier, vol. 231(C).
    20. Huijun Feng & Lingen Chen & Wei Tang & Yanlin Ge, 2022. "Optimal Design of a Dual-Pressure Steam Turbine for Rankine Cycle Based on Constructal Theory," Energies, MDPI, vol. 15(13), pages 1-20, July.

    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:218:y:2021:i:c:s0360544220325536. 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.