Temperature inversion in summer daytime and its influence on heat dissipation of dry cooling tower

MAO Mingce; WANG Juan; HU Jinbao

doi:10.19666/j.rlfd.202001090

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Temperature inversion in summer daytime and its influence on heat dissipation of dry cooling tower

更新时间：2025-09-28

- Temperature inversion in summer daytime and its influence on heat dissipation of dry cooling tower
- Thermal Power Generation Vol. 49, Issue 11, Pages: 147-152(2020)
- 作者机构：
  
  1. 陕西省气候中心
  2. 秦岭和黄土高原生态环境气象重点实验室
  3. 中国电力工程顾问集团西北电力设计院有限公司
- 作者简介：
- 基金信息：
- DOI：10.19666/j.rlfd.202001090
  CLC： P49;TM621.7
- Published Online：03 November 2020，
  
  Published：2020
- 稿件说明：
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MAO Mingce, WANG Juan, HU Jinbao. Temperature inversion in summer daytime and its influence on heat dissipation of dry cooling tower[J]. Thermal power generation, 2020, 49(11): 147-152.
DOI：

MAO Mingce, WANG Juan, HU Jinbao. Temperature inversion in summer daytime and its influence on heat dissipation of dry cooling tower[J]. Thermal power generation, 2020, 49(11): 147-152. DOI： 10.19666/j.rlfd.202001090.

摘要

为了优化间接空冷塔(间冷塔)设计参数

适应夏季昼间高温低风速时段对间冷塔散热的不利影响

对渭南市某间接空冷项目开展夏季系留气球低空探测

用Fluent软件模拟了逆温对间冷塔散热的影响。结果表明:入口高度、出口高度接地逆温强度每增强1.0℃/(100 m)

散热量分别减少2.4%和3.0%;夏季昼间高温低风速时段观测到悬浮逆温

悬浮逆温厚度100m时

强度为0.5～2.0℃/(100m)的悬浮逆温比平均状态和其他强度的逆温有利于散热。建议在调查夏季逆温时

加密高温时段观测时次

提高观测高度。

Abstract

In order to optimize the design parameters of indirect air cooling tower

make the tower adaptive to the adverse effect of high temperature and low wind speed in summer daytime on its heat dissipation

low altitude detection of captive balloon in summer was carried out for an indirect air cooling project in Weinan

and the influence of temperature inversion on heat dissipation the indirect cooling tower is simulated by computational fluid dynamic(CFD) software. The result shows that

the heat dissipation of the tower reduces by 2.4% and 3.0% for each 1.0 ℃/(100 m) increase in intensity of ground temperature inversion

according to the top height of ground temperature inversion

inlet level(≤50 m) and outlet level(≤100 m). The suspended inversion is observed during high temperature and low wind speed period in summer daytime

it accelerates the heat dissipation capacity of the tower than upper from the intension of 0.5～2.0 ℃/(100 m) within the thickness of 100 m

but the influence of other thickness needs more work. At last

it is strong suggested to increase observe times and height during the time of high temperature in daytime when the temperature inversion is investigated in summer.

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