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Thermodynamic characteristics of thermal power plant with hybrid (dry/wet) cooling system

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  • Hu, Hemin
  • Li, Zhigang
  • Jiang, Yuyan
  • Du, Xiaoze

Abstract

A hybrid cooling system (HCS) consisting of dry and wet sections is proposed as a means to conserve energy and water by combining the benefits of both dry and wet cooling modes. A thermodynamic model of a 660 MW thermal power plant with HCS is established, and the variations in thermodynamic characteristics with respect to dry bulb temperature (TA) and relative humidity (RH) are investigated using Ebsilon calculating code. Through comparison between the dry cooling system (DCS) and wet cooling system (WCS), HCS performance characteristics under different meteorological parameters are analyzed quantitatively. By comprehensively considering water and energy conservation indicators, the unique operation mode and ratio of the heat load shared by dry or wet sections are determined under various meteorological parameters. When TA exceeds a certain value or RH falls below a certain value, the HCS does not operate in a hybrid cooling mode. Instead, its operation is equivalent to that of a WCS. We suggest that the cooling load of the wet section in the HCS be designed with the peak cooling load of the condenser under the most inhospitable meteorological parameters of the year. The findings reported here may provide guidance for HCS thermodynamic design and operation regulations.

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  • Hu, Hemin & Li, Zhigang & Jiang, Yuyan & Du, Xiaoze, 2018. "Thermodynamic characteristics of thermal power plant with hybrid (dry/wet) cooling system," Energy, Elsevier, vol. 147(C), pages 729-741.
    • Handle: RePEc:eee:energy:v:147:y:2018:i:c:p:729-741
    DOI: 10.1016/j.energy.2018.01.074
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    References listed on IDEAS

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    Cited by:

    1. 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.
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    3. 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).
    4. 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.
    5. Madejski, Paweł & Żymełka, Piotr, 2020. "Calculation methods of steam boiler operation factors under varying operating conditions with the use of computational thermodynamic modeling," Energy, Elsevier, vol. 197(C).
    6. Kong, Yanqiang & Wang, Weijia & Yang, Lijun & Du, Xiaoze, 2020. "Energy efficient strategies for anti-freezing of air-cooled heat exchanger," Applied Energy, Elsevier, vol. 261(C).
    7. Palenzuela, Patricia & Roca, Lidia & Asfand, Faisal & Patchigolla, Kumar, 2022. "Experimental assessment of a pilot scale hybrid cooling system for water consumption reduction in CSP plants," Energy, Elsevier, vol. 242(C).

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