Study on high pressure non uniform spray with peak cooling in direct air cooling units

ZHANG Tao; LI Kuifa; GAO Feng; ZHANG Jijun; QIU Bing; LIAO Haifan; WU Xisheng; YU Hui; WANG Kun; JI Haimin

doi:10.19666/j.rlfd.202407161

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Study on high pressure non uniform spray with peak cooling in direct air cooling units

更新时间：2025-12-26

- Study on high pressure non uniform spray with peak cooling in direct air cooling units
- Thermal Power Generation Vol. 54, Issue 4, Pages: 149-157(2025)
- 作者机构：
  
  1. 新疆华电米东热电公司
  2. 浙江诺宸环保科技有限公司
  3. 西安交通大学能源与动力工程学院
  4. 西安热工研究院有限公司
- 作者简介：
- 基金信息：
- DOI：10.19666/j.rlfd.202407161
  CLC： TM621
- Published：2025
- 稿件说明：
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ZHANG Tao, LI Kuifa, GAO Feng, et al. Study on high pressure non uniform spray with peak cooling in direct air cooling units[J]. Thermal Power Generation, 2025, 54(4): 149-157.
DOI：

ZHANG Tao, LI Kuifa, GAO Feng, et al. Study on high pressure non uniform spray with peak cooling in direct air cooling units[J]. Thermal Power Generation, 2025, 54(4): 149-157. DOI： 10.19666/j.rlfd.202407161.

摘要

直接空冷机组夏季高温时段不能满发是普遍存在的问题，目前广泛采用的解决方法是在空冷机组中加装喷淋装置进行增湿降温。通过对冷却单元内的空气流场进行分析，发现由于风机和桥架等影响，仓室内空气流场呈非均匀状态。采用空气流场非均匀布置喷头方法，使空气与喷雾水均匀混合，采用高压喷雾达到整体空气场均匀降温，最大化降低冷却空气温度。该方法有效解决了空冷机组夏季降温提效的难题，对火电机组夏季顶峰运行具有重要意义。

Abstract

It is a common problem that the direct air-cooled unit cannot be fully charged during the high temperature period in summer

and the widely used solution is to install a sprinkler device in the air-cooled unit for humidification and cooling. Through analysis on the air flow field in the cooling unit

it is found that the air flow field in the silo is non-uniform due to the influence of fans and bridges. The method of non-uniform arrangement of nozzles in the air flow field is used to evenly mix the air and spray water

and the high-pressure spray is used to achieve a uniform temperature drop in the overall air field to minimize the temperature of the cooling air. This method effectively solves the problem of cooling and improves the efficiency of air-cooled units in summer

and is of great significance for peak operation of thermal power units in summer.

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SHI Lei1

LIU Hai-feng2

SHI Xiang-bin2

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LI Gao-chao

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Beijing Jiaotong University

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