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A novel layout of air-cooled condensers to improve thermo-flow performances

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  • Chen, Lei
  • Yang, Lijun
  • Du, Xiaoze
  • Yang, Yongping

Abstract

Ambient winds are generally unfavorable to the thermo-flow performances of air-cooled condensers in power plants. More emphases are placed to weaken the negative effects of ambient winds, but no layout alternative of air-cooled condensers is considered. In this work, a novel vertical arrangement of air-cooled condensers is proposed on the basis of a 2×600MW direct dry cooling power plant, which can weaken the adverse wind effects and utilize the wind power to improve the cooling capacity of air-cooled condensers. By means of the CFD simulation and experimental validation, the flow and temperature fields of cooling air for the vertically arranged air-cooled condensers at ambient winds are obtained. The mass flow rate, inlet air temperature and turbine back pressure are computed and compared with the traditional air-cooled condensers. The results show that the flow rate of the novel air-cooled condensers increases conspicuously compared with the current ones both in the absence and presence of winds. In the wind directions of 60° and 90°, the off-axis flow distortions of axial flow fans are greatly weakened and the average inlet air temperature of the novel air-cooled condensers is reduced and almost equals the ambient temperature. The thermo-flow performances of the air-cooled condensers are improved, thus the turbine back pressure is reduced by the novel layout of air-cooled condensers.

Suggested Citation

  • Chen, Lei & Yang, Lijun & Du, Xiaoze & Yang, Yongping, 2016. "A novel layout of air-cooled condensers to improve thermo-flow performances," Applied Energy, Elsevier, vol. 165(C), pages 244-259.
    • Handle: RePEc:eee:appene:v:165:y:2016:i:c:p:244-259
    DOI: 10.1016/j.apenergy.2015.11.062
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    References listed on IDEAS

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    Cited by:

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    2. Wenhui Huang & Lei Chen & Weijia Wang & Lijun Yang & Xiaoze Du, 2020. "Cooling Performance Optimization of Direct Dry Cooling System Based on Partition Adjustment of Axial Flow Fans," Energies, MDPI, vol. 13(12), pages 1-22, June.
    3. Wenhui Huang & Lei Chen & Lijun Yang & Xiaoze Du, 2021. "Energy-Saving Strategies of Axial Flow Fans for Direct Dry Cooling System," Energies, MDPI, vol. 14(11), pages 1-25, May.
    4. Li, Xiaoxiao & Gurgenci, Hal & Guan, Zhiqiang & Wang, Xurong & Duniam, Sam, 2017. "Measurements of crosswind influence on a natural draft dry cooling tower for a solar thermal power plant," Applied Energy, Elsevier, vol. 206(C), pages 1169-1183.
    5. 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.
    6. Xianwei Huang & Lin Chen & Lijun Yang & Xiaoze Du & Yongping Yang, 2019. "Cooling Performance Enhancement of Air-Cooled Condensers by Guiding Air Flow," Energies, MDPI, vol. 12(18), pages 1-28, September.
    7. Li, Xiaoen & Wang, Ningling & Wang, Ligang & Yang, Yongping & Maréchal, François, 2018. "Identification of optimal operating strategy of direct air-cooling condenser for Rankine cycle based power plants," Applied Energy, Elsevier, vol. 209(C), pages 153-166.
    8. Weiming Ni & Zhihua Ge & Lijun Yang & Xiaoze Du, 2019. "Piping-Main Scheme for Condensers against the Adverse Impact of Environmental Conditions on Air-Cooled Thermal Power Units," Energies, MDPI, vol. 13(1), pages 1-17, December.
    9. O’Donovan, Alan & Grimes, Ronan & Sikora, Paul, 2019. "Enhanced performance of air-cooled thermal power plants using low temperature thermal storage," Applied Energy, Elsevier, vol. 250(C), pages 1673-1685.
    10. Wang, Weiliang & Zhang, Hai & Li, Zheng & Lv, Junfu & Ni, Weidou & Li, Yongsheng, 2016. "Adoption of enclosure and windbreaks to prevent the degradation of the cooling performance for a natural draft dry cooling tower under crosswind conditions," Energy, Elsevier, vol. 116(P2), pages 1360-1369.
    11. Yonghong Guo & Huimin Wei & Xiaoru Yang & Weijia Wang & Xiaoze Du & Lijun Yang, 2018. "Impacts of Water Flow Rate on Freezing Prevention of Air-Cooled Heat Exchangers in Power Plants," Energies, MDPI, vol. 11(1), pages 1-15, January.

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