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A novel thermodynamic method and insight of heat transfer characteristics on economizer for supercritical thermal power plant

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  • Wang, Yanhong
  • Cao, Lihua
  • Li, Xingcan
  • Wang, Jiaxing
  • Hu, Pengfei
  • Li, Bo
  • Li, Yong

Abstract

The technology of installing economizer has been proven to be an efficient way of recovering waste heat from flue gas of coal-fired power plants. In this study, a novel theoretical model of economizer involving heat transfer characteristics and regarding the variation of physical properties for working fluid is proposed to evaluate and analyze the thermodynamic performance of economizer for supercritical unit. With such a tool, a theoretical investigation on heat transfer characteristics and exergy analysis of process with regard to economizer installed in a 660 MW supercritical unit is performed. The performance parameters on heat transfer are graphically presented. Moreover, the heat transfer performance of economizer from novel theory is compared with that obtained by traditional method, and the drawbacks of traditional model are thoroughly revealed.

Suggested Citation

  • Wang, Yanhong & Cao, Lihua & Li, Xingcan & Wang, Jiaxing & Hu, Pengfei & Li, Bo & Li, Yong, 2020. "A novel thermodynamic method and insight of heat transfer characteristics on economizer for supercritical thermal power plant," Energy, Elsevier, vol. 191(C).
    • Handle: RePEc:eee:energy:v:191:y:2020:i:c:s0360544219322686
    DOI: 10.1016/j.energy.2019.116573
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    Cited by:

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    2. Shidan Chi & Tao Luan & Yan Liang & Xundong Hu & Yan Gao, 2020. "Analysis and Evaluation of Multi-Energy Cascade Utilization System for Ultra-Supercritical Units," Energies, MDPI, vol. 13(15), pages 1-13, August.
    3. Tang, Wei & Feng, Huijun & Chen, Lingen & Xie, Zhuojun & Shi, Junchao, 2021. "Constructal design for a boiler economizer," Energy, Elsevier, vol. 223(C).
    4. Hou, Guolian & Gong, Linjuan & Hu, Bo & Su, Huilin & Huang, Ting & Huang, Congzhi & Fan, Wei & Zhao, Yuanzhu, 2022. "Application of fast adaptive moth-flame optimization in flexible operation modeling for supercritical unit," Energy, Elsevier, vol. 239(PA).

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