Effect of partition water distribution on cooling performance of wet cooling towers with cross wind

CHEN Rui; SUN Gengsheng; SUN Haoran; HE Suoying; GAO Ming

doi:10.19666/j.rlfd.202109195

English

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Effect of partition water distribution on cooling performance of wet cooling towers with cross wind

Thermal Power Generation Vol. 51, Issue 3, Pages: 36-42(2022)

更新时间：2025-09-28

- Effect of partition water distribution on cooling performance of wet cooling towers with cross wind
- 作者机构：
  
  1. 高效节能及储能技术与装备山东省工程实验室(山东大学能源与动力工程学院)
  2. 山东华聚能源股份有限公司赵楼电厂
- 作者简介：
- 基金信息：
- DOI：10.19666/j.rlfd.202109195
  CLC： TM62
- Published：2022
- 稿件说明：
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CHEN Rui, SUN Gengsheng, SUN Haoran, et al. Effect of partition water distribution on cooling performance of wet cooling towers with cross wind[J]. Thermal Power Generation, 2022, 51(3): 36-42.
DOI：

CHEN Rui, SUN Gengsheng, SUN Haoran, et al. Effect of partition water distribution on cooling performance of wet cooling towers with cross wind[J]. Thermal Power Generation, 2022, 51(3): 36-42. DOI： 10.19666/j.rlfd.202109195.

摘要

分区配水能通过改善传热传质区域的气水比来提高冷却塔冷却效率，其实际运行过程中侧风的影响不容忽视。以某超大型湿式冷却塔为对象，利用三维数值模拟方法研究了环境风速v=1～3 m/s时，出塔水温、冷却效率、通风量和蒸发损失在不同分区配水方案下（内区配水量占比在5%～95%变化）的变化趋势。结果表明：以风速v=3 m/s为例，随内区配水量占比的增加，出塔水温先减小后增大，冷却效率、通风量和蒸发损失先增大后减小；当内区配水量占比为65%时，出塔水温比均匀配水（内区配水量为60.68%）时降低了约0.14℃，冷却效率提高了0.82%；同时，风速v=1～3m/s时，分区配水的出塔水温均低于均匀配水，冷却效率均高于均匀配水。因此，在低风速下，与均匀配水方案相比，分区配水方案能有效降低冷却塔的出塔水温、提高冷却效率。

Abstract

Partition water distribution can enhance the cooling efficiency of cooling tower by improving the gas-towater ratio in heat transfer area

and the effect of cross side wind during actual operation process cannot be ignored.By taking a super-large scale wet cooling tower as the research object

three dimensional numerical simulation method is applied to study the change trend of outlet water temperature

cooling efficiency

ventilation and evaporation loss with water distribution in the inner zone accounting for 5%～95% at wind speed v=1～3 m/s. The results indicates that

when v=3 m/s

with the increase of the proportion of water distribution in the inner zone

the outlet water temperature decreases at first and then increases

and the cooling efficiency

ventilation and evaporation loss increases at first and then decreases. When the proportion of water distribution in the inner zone is 65%

compared with the uniform water distribution(the proportion of water distribution in the inner zone is 60.68%)

the outlet water temperature reduces by 0.14 ℃ and the cooling efficiency increases by 0.82%. Meanwhile

when the wind speed is 1～3 m/s

the outlet water temperature of partition water distribution is lower than that of the uniform water distribution

and the cooling efficiency is higher than that of the uniform water distribution. Therefore

comparing with the uniform water distribution

partition water distribution can effectively reduce the outlet water temperature and improve cooling efficiency at low wind speed.

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