Research on the Wind-Induced Interference Effect on New and Existing Cooling Towers of the Same Size

CHEN Dewen; YU Wei; WANG Wencai; HAO Rongrong; KE Shitang

doi:10.3724/j.gyjzG24042815

Volume 55 Issue 2

Feb. 2025

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CHEN Dewen, YU Wei, WANG Wencai, HAO Rongrong, KE Shitang. Research on the Wind-Induced Interference Effect on New and Existing Cooling Towers of the Same Size[J]. INDUSTRIAL CONSTRUCTION, 2025, 55(2): 111-120. doi: 10.3724/j.gyjzG24042815

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Research on the Wind-Induced Interference Effect on New and Existing Cooling Towers of the Same Size

doi: 10.3724/j.gyjzG24042815

1. Shandong Electric Power Engineering Consulting Institute Co., Ltd., Jinan 250013, China;
2. Department of Civil and Airport Engineering, Nanjing University of Aeronautics and Astronautics, Nanjing 210016, China

Received Date: 2024-04-28
Available Online: 2025-04-02

Abstract

Abstract

The extension of the power plant will generate the wind-induced interference effect on the new and existing cooling towers, which is one of the important reasons of the failure and collapse of the cooling towers caused by wind. The current code and existing research completely ignore the extreme value of the wind load of the cooling tower in such cases. Taking the new and existing cooling towers of the same size in a power plant in Qinzhou, Guangxi Province as the object, on the basis of the existing tandem two-tower combination, a total of 240 working conditions of the three-tower and four-tower combination of the new cooling tower were considered. The wind tunnel test for rigid body was used to analyze the average wind pressures and pulsation distribution characteristics of these towers. Then based on the overall coefficient of resistance, the interference effects under different tower group combinations were quantitatively compared and analyzed, the static and extreme interference factors of new and existing cooling towers were proposed, the influence mechanism of new towers on the average and fluctuating wind pressure distribution on the surface of existing cooling towers was discussed, and the model of extreme wind pressures for new and existing cooling tower groups was established. It was found that the interference effect of the new cooling towers (groups) of the same size on the existing cooling tower groups was significant, especially when the towers were located along the wind direction. Also the "sandwich effect" formed by the disturbed towers and the disturbing building enhanced the interference effect most significantly, where the maximum extreme interference factor of the existing towers was increased by 7%, and the static interference factor was increased by 8.7% under the most unfavorable working condition of the three-tower combination.
- cooling tower,
- tower group combination,
- wind tunnel test,
- interference effect,
- mechanism of action

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References(25)

References

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