电站间接空冷散热器冬季防冻临界运行参数研究

李展洋; 周维博; 汪丽娜; 陈磊; 王伟佳; 杨立军; 杜小泽

doi:10.19666/j.rlfd.202507131

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电站间接空冷散热器冬季防冻临界运行参数研究

Thermal Power Generation Vol. 55, Issue 4, Pages: 127-139(2026)

更新时间：2026-06-12

- 电站间接空冷散热器冬季防冻临界运行参数研究
- 作者机构：
  
  1. 华北电力大学电站能量传递转化与系统教育部重点实验室
  2. 华北电力大学能源动力与机械工程学院
  3. 西安热工研究院有限公司
- 作者简介：
- 基金信息：
- DOI：10.19666/j.rlfd.202507131
  CLC： TM621
- Published：2026
- 稿件说明：
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[1]李展洋,周维博,汪丽娜,等.电站间接空冷散热器冬季防冻临界运行参数研究[J].热力发电,2026,55(04):127-139.
[1]李展洋,周维博,汪丽娜,等.电站间接空冷散热器冬季防冻临界运行参数研究[J].热力发电,2026,55(04):127-139. DOI： 10.19666/j.rlfd.202507131.

DOI：10.19666/j.rlfd.202507131.

摘要

在冬季低温条件下，空冷散热器翅片管束易发生冻结。探究不同风速和风向条件下间接空冷系统临界防冻环境温度与临界防冻循环水流量的变化规律，对保障电厂安全稳定运行具有重要指导意义。以某2×350 MW间接空冷机组为研究对象，采用数值模拟方法，结合百叶窗开度调节策略，对不同工况下间接空冷系统的临界防冻特性进行研究。通过对冬季不同环境气象条件下间接空冷系统流动传热性能变化规律进行分析计算，揭示了不同风速、风向以及不同百叶窗开度条件下间接空冷系统临界防冻环境温度和临界防冻流量变化规律。结果表明：环境风速升高导致临界防冻环境温度降低、临界防冻流量增大；通过降低百叶窗开度可以降低临界防冻环境温度，而临界防冻流量呈先降后升的变化趋势，但在270°风向高风速条件下，临界防冻流量随百叶窗开度减小而持续降低。研究结论可为间接空冷机组在冬季低温环境下安全稳定运行提供运行指导。

Abstract

Under low-temperature conditions in winter

the fin-tube bundles of air-cooled radiators are prone to freezing. Exploring the variation patterns of the critical anti-freezing ambient temperature and critical anti-freezing circulating water flow rate of the indirect air-cooling system at different wind speeds and directions is of great guiding significance for ensuring the safe and stable operation of power plants. Taking a 2×350 MW indirect aircooled unit as the research object

this study adopts the numerical simulation method

combining with the louver opening adjustment strategy

to investigate the critical anti-freezing characteristics of the indirect air-cooling system under different operating conditions. Through the analysis and calculation of the variation patterns of the flow and heat transfer performance of the indirect air-cooling system under different ambient meteorological conditions in winter

the variation laws of the critical anti-freezing ambient temperature and critical anti-freezing flow rate of the indirect air-cooling system at different wind speeds

wind directions and louver openings are revealed. The results show that an increase in ambient wind speed leads to a decrease in the critical anti-freezing ambient temperature and an increase in the critical anti-freezing flow rate. Reducing the louver opening can lower the critical antifreezing ambient temperature

while the critical anti-freezing flow rate shows a trend of decreasing at first and then increasing. However

under the condition of high wind speed in the 270° wind direction

the critical anti-freezing flow rate decreases continuously with the reduction of louver opening. The research conclusions can provide operational guidance for the safe and stable operation of indirect air-cooled units in low-temperature winter environments.

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