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Proposing a new technique to enhance thermal performance and reduce structural design wind loads for natural drought cooling towers

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  • Goudarzi, Mohammad Ali

Abstract

A cooling system is an integrated part of a power plant with steam cycles. Ambient winds can significantly alter the flow field around a natural draft cooling tower which reduces the plant's efficiency. On the other hand, a wind load is extremely important in structural design of natural drought cooling towers (CT). In this paper, a method which utilizes a variable height for towers is introduced to reduce the structural design wind loads. This method reduces the height of the CT under high speed crosswinds. In order to examine the validity of the proposed method, a real scale CT is selected as a case study and the structural design wind loads as well as the thermal performance of the selected CT are analyzed for both the whole and reduced height towers. The structural design wind loads are calculated based on German guidelines, and the CT thermal performance is evaluated by Computational Fluid Dynamic (CFD) model. The numerical results confirm the validity of the proposed method in which the structural design wind loads are properly reduced without considerable reduction in the thermal performance of the CT. This method can be used for effective natural drought cooling towers design.

Suggested Citation

  • Goudarzi, Mohammad Ali, 2013. "Proposing a new technique to enhance thermal performance and reduce structural design wind loads for natural drought cooling towers," Energy, Elsevier, vol. 62(C), pages 164-172.
    • Handle: RePEc:eee:energy:v:62:y:2013:i:c:p:164-172
    DOI: 10.1016/j.energy.2013.09.033
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    References listed on IDEAS

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    1. Picón-Núnez, Martín & Polley, Graham T. & Canizalez-Dávalos, Lázaro & Medina-Flores, José Martín, 2011. "Short cut performance method for the design of flexible cooling systems," Energy, Elsevier, vol. 36(8), pages 4646-4653.
    2. Al-Bassam, E. & Maheshwari, G.P., 2011. "A new scheme for cooling tower water conservation in arid-zone countries," Energy, Elsevier, vol. 36(7), pages 3985-3991.
    3. Chen, Qun & Pan, Ning & Guo, Zeng-Yuan, 2011. "A new approach to analysis and optimization of evaporative cooling system II: Applications," Energy, Elsevier, vol. 36(5), pages 2890-2898.
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    1. Wang, Weiliang & Zhang, Hai & Liu, Pei & Li, Zheng & Lv, Junfu & Ni, Weidou, 2017. "The cooling performance of a natural draft dry cooling tower under crosswind and an enclosure approach to cooling efficiency enhancement," Applied Energy, Elsevier, vol. 186(P3), pages 336-346.
    2. Sun, Jin & Feng, Xiao & Wang, Yufei & Deng, Chun & Chu, Khim Hoong, 2014. "Pump network optimization for a cooling water system," Energy, Elsevier, vol. 67(C), pages 506-512.
    3. Zhao, Yuanbin & Sun, Fengzhong & Li, Yan & Long, Guoqing & Yang, Zhi, 2015. "Numerical study on the cooling performance of natural draft dry cooling tower with vertical delta radiators under constant heat load," Applied Energy, Elsevier, vol. 149(C), pages 225-237.
    4. Ma, Jiaze & Wang, Yufei & Feng, Xiao, 2017. "Energy recovery in cooling water system by hydro turbines," Energy, Elsevier, vol. 139(C), pages 329-340.
    5. 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.
    6. Cui, Haijiao & Li, Nianping & Peng, Jinqing & Cheng, Jianlin & Li, Shengbing, 2016. "Study on the dynamic and thermal performances of a reversibly used cooling tower with upward spraying," Energy, Elsevier, vol. 96(C), pages 268-277.

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