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Theoretical modeling and investigation of the influence of deaerator on the transient process in power plants

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  • Yao, Shunyu
  • Zhang, Wenjie
  • Xu, Lei
  • Du, Xiaoze
  • Wei, Huimin

Abstract

Deaerator is one of the most important equipment for steady state and dynamic operation of power plants. The deaerator energy storage utilization process is one of the most essential ways to enhance the variable load rate of power plants. The purpose of this study is to improve the dynamic simulation performance of the deaerator during unit load changes by constructing a more reasonable deaerator model, aiming to provide guidance for practical operations. In this paper, a thermal mass microelement algorithm is proposed for the heat transfer between droplets and steam in the deaerator, followed by segmental modeling of the deaerator. By comparing with the operation data of a power plant, the steady state operation error of the deaerator model is within 0.6 %. Subsequently, the unit load variation process is simulated and the dynamic variation accuracy of the model proposed in this paper is enhanced by 1–2 % compared to the lumped parameter model. The dynamic characteristics of the deaerator are obtained by simulating the step and ramp changes of the deaerator boundary conditions and the deaerator start-up process. In addition, during the simulation of condensate throttling, the maximum power of the unit using the deaerator model in this paper is 0.2–1.5 MW larger than that of the lumped parameter model.

Suggested Citation

  • Yao, Shunyu & Zhang, Wenjie & Xu, Lei & Du, Xiaoze & Wei, Huimin, 2024. "Theoretical modeling and investigation of the influence of deaerator on the transient process in power plants," Applied Energy, Elsevier, vol. 376(PB).
    • Handle: RePEc:eee:appene:v:376:y:2024:i:pb:s0306261924017252
    DOI: 10.1016/j.apenergy.2024.124342
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    References listed on IDEAS

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    1. Han, Zhonghe & Xiang, Peng, 2020. "Modeling condensate throttling to improve the load change performance of cogeneration units," Energy, Elsevier, vol. 192(C).
    2. 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.
    3. Yu, J.H. & Qu, Z.G. & Zhang, J.F. & Hu, S.J. & Guan, J., 2022. "Comprehensive coupling model of counter-flow wet cooling tower and its thermal performance analysis," Energy, Elsevier, vol. 238(PB).
    4. Zhang, Kezhen & Zhao, Yongliang & Liu, Ming & Gao, Lin & Fu, Yue & Yan, Junjie, 2021. "Flexibility enhancement versus thermal efficiency of coal-fired power units during the condensate throttling processes," Energy, Elsevier, vol. 218(C).
    5. Huang, Xin & Chen, Hu & Ling, Xiang & Liu, Lin & Huhe, Taoli, 2022. "Investigation of heat and mass transfer and gas–liquid thermodynamic process paths in a humidifier," Energy, Elsevier, vol. 261(PA).
    6. Wei Yuan & Fengzhong Sun & Ruqing Liu & Xuehong Chen & Ying Li, 2020. "The Effect of Air Parameters on the Evaporation Loss in a Natural Draft Counter-Flow Wet Cooling Tower," Energies, MDPI, vol. 13(23), pages 1-16, November.
    7. de Mars, Patrick & O’Sullivan, Aidan & Keppo, Ilkka, 2020. "Estimating the impact of variable renewable energy on base-load cycling in the GB power system," Energy, Elsevier, vol. 195(C).
    8. Cao, Yue & Hu, Hui & Chen, Ranjing & He, Tianyu & Si, Fengqi, 2023. "Comparative analysis on thermodynamic performance of combined heat and power system employing steam ejector as cascaded heat sink," Energy, Elsevier, vol. 275(C).
    Full references (including those not matched with items on IDEAS)

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