Anti-Freezing Study of High-Level Water-Collecting Natural Draft Wet-Cooling Tower Based on Its Water Temperature Distribution Characteristics

Zhonghua Wang, Zenggang Yue, Wei Wang, Chenghui Ma, Xiaoguang Li, Changmin Guo and Yuanbin Zhao ()
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Zhonghua Wang: Jining Huayuan Thermal Power Co., Ltd., Jining 272113, China
Zenggang Yue: Jining Huayuan Thermal Power Co., Ltd., Jining 272113, China
Wei Wang: Jining Huayuan Thermal Power Co., Ltd., Jining 272113, China
Chenghui Ma: Jining Huayuan Thermal Power Co., Ltd., Jining 272113, China
Xiaoguang Li: Ji’nan Lanchen Energy Technology Co., Jinan 250101, China
Changmin Guo: Ji’nan Lanchen Energy Technology Co., Jinan 250101, China
Yuanbin Zhao: School of Energy and Power Engineering, Shandong University, Jinan 250061, China

Energies, 2024, vol. 17, issue 3, 1-13

Abstract: Thermal power units play a crucial role in the deep peak regulation of power generation. During deep peak regulation, the load of the unit changes significantly, causing fluctuations in the inlet water temperature of the cooling tower and the water temperature in the filler. Therefore, in cold regions in winter, cooling towers have a high risk of freezing, which threatens the economic and safe operation of the unit. This paper establishes a three-dimensional numerical model based on constant heat dissipation and explores the average and minimum water temperatures at the bottom of filler under different water distribution methods, crosswind velocities, and ambient temperatures. The results show that the water distribution method has a significant impact on the water temperature at the filler bottom. Reducing the water distribution area can significantly increase the minimum water temperature at the filler bottom and reduce the risk of freezing. Although the presence of crosswind is not conducive to the cooling performance of the cooling tower, the higher the crosswind velocity, the higher the minimum outlet water temperature at the filler bottom and the lower the risk of freezing. The minimum water temperature at the filler bottom is approximately linearly related to the ambient temperature and is less affected by the unit load at the same temperature.

Keywords: high-level water-collecting natural draft wet cooling tower; anti-freezing; numerical simulation; water temperature distribution (search for similar items in EconPapers)
JEL-codes: Q Q0 Q4 Q40 Q41 Q42 Q43 Q47 Q48 Q49 (search for similar items in EconPapers)
Date: 2024
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