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Simulation of fluid heating in combustion chamber waterwalls of boilers for supercritical steam parameters

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  • Zima, Wiesław
  • Nowak-Ocłoń, Marzena
  • Ocłoń, Paweł

Abstract

This paper proposes a mathematical model with distributed parameters that allows to simulate the heat transfer processes in combustion chamber waterwalls of supercritical steam boilers. The model comprises solving the one-dimensional mass, momentum and energy conservation equations. The Forward Time Backward Space scheme is applied to discretize the governing equations. Two types of computational verification are performed for the proposed model. At first the model is validated with the analytical solution. The computational accuracy of the proposed model was tested for different time steps and grid size. At second, the results produced by the model were compared with those obtained when the Crank-Nicolson scheme is used to discretize the energy equation. In this case of results comparison the fluid flow and heat transfer phenomena were modeled for spirally wounded waterwall tubes of the combustion chamber in a supercritical boiler. A good agreement was found between the results produced by the proposed model and those obtained by using the analytical and Crank-Nicolson approaches. Therefore, the proposed model can be regarded as a useful tool for the design and monitoring of this type of heated surfaces. Moreover, the model can be applied in power units simulators.

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  • Zima, Wiesław & Nowak-Ocłoń, Marzena & Ocłoń, Paweł, 2015. "Simulation of fluid heating in combustion chamber waterwalls of boilers for supercritical steam parameters," Energy, Elsevier, vol. 92(P1), pages 117-127.
    • Handle: RePEc:eee:energy:v:92:y:2015:i:p1:p:117-127
    DOI: 10.1016/j.energy.2015.02.111
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    References listed on IDEAS

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    1. Kotowicz, Janusz & Michalski, Sebastian, 2014. "Efficiency analysis of a hard-coal-fired supercritical power plant with a four-end high-temperature membrane for air separation," Energy, Elsevier, vol. 64(C), pages 109-119.
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    1. Boyu Deng & Tuo Zhou & Shuangming Zhang & Haowen Wu & Xiaoguo Jiang & Man Zhang & Hairui Yang, 2022. "Safety Analysis on the Heating Surfaces in the 660 MW Ultra-Supercritical CFB Boiler under Sudden Electricity Failure," Energies, MDPI, vol. 15(21), pages 1-15, October.
    2. Yang, D.L. & Tang, G.H. & Fan, Y.H. & Li, X.L. & Wang, S.Q., 2020. "Arrangement and three-dimensional analysis of cooling wall in 1000 MW S–CO2 coal-fired boiler," Energy, Elsevier, vol. 197(C).
    3. Zhou, Jing & Zhu, Meng & Xu, Kai & Su, Sheng & Tang, Yifang & Hu, Song & Wang, Yi & Xu, Jun & He, Limo & Xiang, Jun, 2020. "Key issues and innovative double-tangential circular boiler configurations for the 1000 MW coal-fired supercritical carbon dioxide power plant," Energy, Elsevier, vol. 199(C).
    4. Ge, Xueli & Zhang, Zhongxiao & Fan, Haojie & Zhang, Jian & Bi, Degui, 2019. "Unsteady-state heat transfer characteristics of spiral water wall tube in advanced-ultra-supercritical boilers from experiments and distributed parameter model," Energy, Elsevier, vol. 189(C).
    5. Taler, Jan & Zima, Wiesław & Ocłoń, Paweł & Grądziel, Sławomir & Taler, Dawid & Cebula, Artur & Jaremkiewicz, Magdalena & Korzeń, Anna & Cisek, Piotr & Kaczmarski, Karol & Majewski, Karol, 2019. "Mathematical model of a supercritical power boiler for simulating rapid changes in boiler thermal loading," Energy, Elsevier, vol. 175(C), pages 580-592.
    6. Zhou, Jing & Zhu, Meng & Su, Sheng & Chen, Lei & Xu, Jun & Hu, Song & Wang, Yi & Jiang, Long & Zhong, Wenqi & Xiang, Jun, 2020. "Numerical analysis and modified thermodynamic calculation methods for the furnace in the 1000 MW supercritical CO2 coal-fired boiler," Energy, Elsevier, vol. 212(C).
    7. Al-Momani, Ahmad & Mohamed, Omar & Abu Elhaija, Wejdan, 2022. "Multiple processes modeling and identification for a cleaner supercritical power plant via Grey Wolf Optimizer," Energy, Elsevier, vol. 252(C).
    8. Omar Mohamed & Ashraf Khalil & Jihong Wang, 2020. "Modeling and Control of Supercritical and Ultra-Supercritical Power Plants: A Review," Energies, MDPI, vol. 13(11), pages 1-23, June.
    9. Grądziel, Sławomir, 2019. "Analysis of thermal and flow phenomena in natural circulation boiler evaporator," Energy, Elsevier, vol. 172(C), pages 881-891.
    10. Zima, Wiesław & Nowak-Ocłoń, Marzena & Ocłoń, Paweł, 2018. "Novel online simulation-ready models of conjugate heat transfer in combustion chamber waterwall tubes of supercritical power boilers," Energy, Elsevier, vol. 148(C), pages 809-823.
    11. Deng, Boyu & Zhang, Man & Lyu, Junfu & Li, Shaohua & Yang, Hairui, 2019. "Safety analysis on the water wall in the 350 MW supercritical CFB boiler under sudden electricity failure," Energy, Elsevier, vol. 189(C).
    12. Majdak, Marek & Grądziel, Sławomir, 2020. "Influence of thermal and flow conditions on the thermal stresses distribution in the evaporator tubes," Energy, Elsevier, vol. 209(C).
    13. Zima, Wiesław, 2019. "Simulation of steam superheater operation under conditions of pressure decrease," Energy, Elsevier, vol. 172(C), pages 932-944.
    14. Yang, D.L. & Tang, G.H. & Li, X.L. & Fan, Y.H., 2022. "Capacity-dependent configurations of S–CO2 coal-fired boiler by overall analysis with a unified model," Energy, Elsevier, vol. 245(C).

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