Investigation on feasible zone of nozzle spray for pre-cooling the inlet air of natural draft dry cooling tower

Pang, Huimin; Zhao, Chunrong; Cheng, Shen; Wang, Mingwei; Gao, Qi; He, Suoying; Sun, Gengsheng; Jiang, Guangxu; Sun, Qi; Liu, Zhilan; Geng, Zhe; Zhang, Shuzhen; Gao, Ming

doi:10.1016/j.tsep.2023.101650

Cited by 7 publications

(2 citation statements)

References 37 publications

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“…Jalal Bahreh Bar et al studied the influence of nozzle diameter and pressure on spray angle and flow rate [1]. Pang et al conducted numerical simulations to investigate the effects of nozzle arrangement height, arrangement radius, and injection angle on spray performance, and concluded that the nozzle arrangement position plays an important role in droplet evaporation [2]. Chen et al performed detailed experimental measurements on a large droplet spray nozzle and found that simple modifications to the nozzle (increasing the length of the mixing chamber by 50%) significantly affect its performance [3].…”

Section: Introductionmentioning

confidence: 99%

Optimization Design of Nozzle Structure Inside Boiler Based on Orthogonal Design

Ye,

Xu,

Huang

et al. 2023

Processes

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This article adopts an orthogonal experimental design method to establish a four-factor three-level experimental group by varying the structural parameters at the nozzle outlet, including the number of orifices, orifice diameter, distribution circle diameter, and inclination angle of the base. The three-dimensional jet flow field in the jet pipe was numerically simulated. Through the use of the entropy generation method, Q-criteria, range analysis, and significance test, the working characteristics of the jet pipe were thoroughly investigated. The results show that the orifice diameter has a significant impact on the axial force acting on the jet pipe, while the number of orifices has a minor effect. The distribution circle diameter and inclination angle of the base have very little influence. The final confirmed optimal combination of nozzle structure parameters is as follows: the number of spray holes is 40, the diameter of each spray hole is 1.5 mm, the distribution circle diameter is 22 mm, and the inclination angle of the bottom cover is 30 degrees.

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Section: Introductionmentioning

confidence: 99%

Optimization Design of Nozzle Structure Inside Boiler Based on Orthogonal Design

Ye,

Xu,

Huang

et al. 2023

Processes

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“…However, the cooling performance of the dry cooling tower is significantly affected by environmental factors like crosswind, ambient temperature, humidity, and other related conditions. This is because NDDCT utilizes the natural convection of air density difference between the inside and outside of the tower as the driving force to dissipate heat [2,3].…”

mentioning

confidence: 99%

Impact of Crosswind on Steady-State and Dynamic Performance of Natural Draft Dry Cooling Tower Group: A Numerical Analysis

Jiang,

Zhang,

Wang

et al. 2024

FHMT

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This study investigates the performance of a natural draft dry cooling tower group in crosswind conditions through numerical analysis. A comprehensive three-dimensional model is developed to analyze the steady-state and dynamic behavior of the towers. The impact of wind speed and direction on heat rejection capacity and flow patterns is examined. Results indicate that crosswinds negatively affect the overall heat transfer capacity, with higher crosswind speeds leading to decreased heat transfer. Notably, wind direction plays a significant role, particularly at 0°. Moreover, tower response time increases with higher crosswind speeds due to increased turbulence and the formation of vortices. The response times are generally similar for wind directions of 45°and 90°, but differ when facing 0, where the leeward tower exhibits a shorter response time compared to the windward tower. These findings provide valuable insights into the performance of natural draft dry cooling tower groups under crosswind conditions, which can inform the design and operation of similar systems in practical applications.

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Thermal performance and structural behaviour of steel hyperbolic cooling tower with holes

Song

Zhi

et al. 2023

Applied Thermal Engineering

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Investigation on feasible zone of nozzle spray for pre-cooling the inlet air of natural draft dry cooling tower

Cited by 7 publications

References 37 publications

Optimization Design of Nozzle Structure Inside Boiler Based on Orthogonal Design

Optimization Design of Nozzle Structure Inside Boiler Based on Orthogonal Design

Impact of Crosswind on Steady-State and Dynamic Performance of Natural Draft Dry Cooling Tower Group: A Numerical Analysis

Thermal performance and structural behaviour of steel hyperbolic cooling tower with holes

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