Features of calculation technique of the cooling tower in the winter period taking into account the desigh of the head wall

Ezhov, V. S.; Zakharov, A. E.; Ezhova, Tatiana; Kravchenko, Serhii; Amelin, Volodymyr

doi:10.1088/1757-899x/1001/1/012066

Cited by 2 publications

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“…At the air inlet of the cooling tower, a large amount of ice gradually forms a wall of ice, which reduces the air ventilation and results in the cooling efficiency decreasing. Moreover, water droplets iced in the filler lead to an increase in filler weight, resulting in damage to the tower structure and cooling system failure [4]. Therefore, it is necessary to investigate the anti-freezing characteristics of the cooling tower.…”

Section: Introductionmentioning

confidence: 99%

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

Wang,

Yue,

Wang

et al. 2024

Energies

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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.

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Section: Introductionmentioning

confidence: 99%

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

Wang,

Yue,

Wang

et al. 2024

Energies

View full text Add to dashboard Cite

show abstract

“…This can result in icing within the cooling tower [1], which mainly occurs at the air inlet of the support column, the packing bottom, and the boundary of partition water distribution in packing. Icing in the cooling tower can significantly impact its safety, shorten the lifespan of key facilities, and reduce economic efficiency [2]. Therefore, it is imperative to research anti-freezing measures for cooling towers.…”

Section: Introductionmentioning

confidence: 99%

Study on the Influence of Circulating Water Bypass on the Thermal and Anti-Freezing Characteristics of High-Level Wet Cooling Tower

Wang,

Yue,

Wang

et al. 2024

Energies

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When heating units are operated in winter, the extreme conditions, such as deep peak regulation and large extraction, can easily lead to a low unit load and severe icing in the wet cooling tower, which threatens the safe operation of the unit. Therefore, it is necessary to study the anti-freezing characteristics of the wet cooling tower. In this paper, a three-dimensional numerical model of a high-level, natural draft wet cooling tower is developed based on the constant heat load method. The influence of withdrawing a certain percentage of circulating water into the bypass on the cooling performance and anti-freezing characteristics of the high-level, natural draft wet cooling tower is investigated. The results show that as the percentage of circulating water bypass extraction increases, the temperature drop of circulating water in the tower continues to increase, but the lowest and the average water temperatures at the bottom of the packing continue to decrease. At the same time, the amount of circulating water entering the tower decreases, the pressure difference between the inside and outside of the tower under the same environmental conditions decreases, and the pumping force of the cooling tower decreases. If the circulating water bypass extraction percentage is less than 10%, it can prevent the circulating water from freezing at the bottom of the packing and, at the same time, try to reduce the temperature of the circulating water entering the condenser to ensure the efficiency of the unit.

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Features of calculation technique of the cooling tower in the winter period taking into account the desigh of the head wall

Abstract: The work is devoted to the topic of researching the operation of a cooling tower in winter as a result of contact with cold air, when problems of freezing of its head wall arise. A methodic for calculating a cooling tower and an innovative way to improve its efficiency are proposed.

Cited by 2 publications

References 0 publications

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

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

Study on the Influence of Circulating Water Bypass on the Thermal and Anti-Freezing Characteristics of High-Level Wet Cooling Tower

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