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Performance prediction and cost-effectiveness analysis of a novel natural draft hybrid cooling system for power plants

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  • Wei, Huimin
  • Huang, Xianwei
  • Chen, Lin
  • Yang, Lijun
  • Du, Xiaoze

Abstract

Natural draft dry cooling system (NDDCs) utilizes ambient air as cooling medium and is susceptible the ambient conditions. Natural draft wet cooling system (NDWCs) can provide adequate cooling capacity by consuming large amount of water but forms visible plumes. A novel natural draft hybrid cooling system (NDHCs) which consists of both dry and wet components is proposed in this study as a means to be in conflict with the protection and conservation of water resources. With full consideration of its control equations of flow, heat and mass transfer, an iterative algorithm is developed to predict the performance of NDHCs. Coupled to a practical coal-fired power unit, the annual performances of the three systems, as well as the trade-off of the water consumption rate and saved coal consumption rate are explored. The results indicate that during extreme hot days, NDHCs shows more priority over NDDCs and NDWCs. The annual performance of NDHCs is better than NDDCs and NDWCs due to its parallel connection of air, which brings more air passing through the tower. Compared with NDDCs, the playback period of the modification is only 1 year though there is a slightly underestimation due to the structure difference of tower. Furthermore, NDHCs can avoid plumes and further pollution caused by the plumes effectively, since the saturated/supersaturated air will be warmed by the air from dry section and within the sub-saturated region.

Suggested Citation

  • Wei, Huimin & Huang, Xianwei & Chen, Lin & Yang, Lijun & Du, Xiaoze, 2020. "Performance prediction and cost-effectiveness analysis of a novel natural draft hybrid cooling system for power plants," Applied Energy, Elsevier, vol. 262(C).
    • Handle: RePEc:eee:appene:v:262:y:2020:i:c:s0306261920300672
    DOI: 10.1016/j.apenergy.2020.114555
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    References listed on IDEAS

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    Cited by:

    1. Yu, Jianhang & Qu, Zhiguo & Zhang, Jianfei & Hu, Sanji & Song, Jialiang & Chen, Yongdong, 2022. "A comprehensive energy efficiency assessment indicator and grading criteria for natural draft wet cooling towers," Energy, Elsevier, vol. 254(PB).
    2. Tarun Kumar Aseri & Chandan Sharma & Tara C. Kandpal, 2022. "Condenser cooling technologies for concentrating solar power plants: a review," Environment, Development and Sustainability: A Multidisciplinary Approach to the Theory and Practice of Sustainable Development, Springer, vol. 24(4), pages 4511-4565, April.
    3. Qian Huang & Yifan Zhi & Rongyong Zhang & Huimin Wei & Lei Xu, 2022. "Comprehensive Comparison of Hybrid Cooling of Thermal Power Generation with Airside Serial and Parallel Heat Exchange," Energies, MDPI, vol. 15(17), pages 1-28, September.
    4. Huimin Wei & Lin Chen & Zhihua Ge & Lijun Yang & Xiaoze Du, 2021. "Influence of Operation Schemes on the Performance of the Natural Draft Hybrid Cooling System for Thermal Power Generation," Energies, MDPI, vol. 14(18), pages 1-22, September.
    5. 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).

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