Experimental Study on the Performance and Optimization of Packing for Crossflow Cooling Tower

Chen Yongchun; Liu Jinping; Tan Xiaowei; Su Zhenxing; Tan Zhifeng; Zou Zhenjie

doi:10.12465/j.issn.0253-4339.2025.02.109

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Experimental Study on the Performance and Optimization of Packing for Crossflow Cooling Tower

更新时间：2025-04-15

- Experimental Study on the Performance and Optimization of Packing for Crossflow Cooling Tower
- Journal of Refrigeration Vol. 46, Issue 2, Pages: 109-119(2025)
- 作者机构：
  
  1.华南理工大学电力学院　广州　 510641
  2.广东省能源高效清洁利用重点实验室　广州　 510641
  3.亚热带建筑与城市科学全国重点实验室　广州　 510641
  4.新菱空调（佛冈）有限公司　清远　 511600
- 作者简介：
  
  Liu Jinping, male, professor, School of Electric Power Engineering, South China University of Technology, 86-13501546214, E-mail: mpjpliu@scut.edu.cn. Research fields: efficient phase transfer heat and high-density energy storage.
- 基金信息：
- DOI：10.12465/j.issn.0253-4339.2025.02.109
  CLC： TB61⁺1;TB657;TU279.7⁺41
- Received：31 October 2023，
  
  Revised：2023-12-12，
  
  Accepted：29 January 2024，
  
  Published：16 April 2025
- 稿件说明：
移动端阅览
Chen Yongchun, Liu Jinping, Tan Xiaowei, et al. Experimental Study on the Performance and Optimization of Packing for Crossflow Cooling Tower[J]. Journal of Refrigeration, 2025, 46(2): 109-119.
DOI：

Chen Yongchun, Liu Jinping, Tan Xiaowei, et al. Experimental Study on the Performance and Optimization of Packing for Crossflow Cooling Tower[J]. Journal of Refrigeration, 2025, 46(2): 109-119. DOI： 10.12465/j.issn.0253-4339.2025.02.109.

摘要

作为冷却塔的换热核心部件，填料的性能对强制通风冷却塔动力设备的功耗具有重要影响。通过搭建横流冷却塔填料性能实验台，研究了风速、淋水密度及填料高度对人字波纹填料传热传质性能及阻力特性的影响，并拟合出相关经验公式对横流冷却塔的风机功耗进行分析。结果表明：填料的传热传质性能随着风速、淋水密度的增大以及填料高度的减小而提高。其中，风速是影响横流冷却塔填料传热传质性能最重要的因素，风速由0.96 m/s增至2.05 m/s，填料的容积散质系数可提升70%；在小淋水密度下，增大淋水密度可以较好地提升填料的传热传质性能。填料区风阻随着风速的提升明显增大，在实验条件下，填料区风阻约与填料迎面风速的1.68~1.91次方成正比。当冷却水体积流量为70 m

/h时，可牺牲20%换热量，将进出水温差由5 ℃降至4 ℃，耗电比可减小约71%；而保持耗电比为0.035 kW·h/m

，将逼近度由4 ℃降至3 ℃，冷却水体积流量需减小31%。

Abstract

As a core heat exchange component in forced-draft cooling towers

the performance of packing material significantly impacts the power consumption of the equipment. In this study

an experimental platform for crossflow cooling tower packing was developed to examine the effects of wind speed

water spray density

and packing height on the heat and mass transfer performance and resistance characteristics of herringbone corrugated packing. Empirical formulas were derived to analyze fan power consumption in crossflow cooling towers. Results reveal that heat and mass transfer performance improves with increased wind speed and water spray density and decreased packing height. Wind speed was found to be the most influential factor; increasing wind speed from 0.96 m/s to 2.05 m/s raised the mass-transfer coefficient by 70%. At low water spray densities

increasing the density significantly enhanced heat and mass transfer. Air resistance in the packing zone increased with air velocity

approximately proportional to the 1.68-1.91 power of wind speed. When the cooling water volume flow rate was 70 m

sacrificing 20% of heat exchange capacity and reducing the inlet-outlet temperature difference from 5 ℃ to 4 ℃ reduced power consumption by approximately 71%. To maintain a power consumption ratio of 0.035 kW·h/m

lowering the approach temperature from 4 ℃ to 3 ℃ required a 31% reduction in cooling water volume fl

ow rate.

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