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一种立管式间接蒸发冷却器的数值模拟与分析

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立管式间接蒸发冷却器的传热强化更加方便,占地节省,但管内壁经常出现水膜分布不均等问题导致效率下降.采用三维全尺寸数值模拟研究方法,对带内沟槽的立管式间接蒸发冷却器的性能及其结构、运行等参数的作用机理进行了模拟分析,得到了较为合理的结构配置及其相对应的运行工况,发现当环境参数为29℃,湿度为45%,管径为25mm,相对管间距为2m,管长1m,一次风速2.5m/s,二次风速为13m/s,在此条件下换热效果明显.
Numerical Simulation and Analysis of a Vertical Tube Indirect Evaporative Cooler
The heat transfer enhancement of the vertical type indirect evaporative cooler is more convenient and occupies less space.However,the efficiency of t the vertical type indirect evaporative cooler is reduced due to the uneven distribution of water film on the inner wall of the pipe.In this paper,three-dimensional full-size numerical simulation research method is used to simulate and analyze the performance,structure,operation and other parameters of the vertical tube indirect evaporative cooler with internal groove,and obtain a more reasonable structure configuration and corresponding operating conditions.It is found that when the environmental parameter is 29℃,humidity is 45%,pipe diameter is 25mm,and relative pipe spacing is 2.The pipe length is 1m,the primary wind speed is 2.5m/s,and the secondary wind speed is 13m/s.Under this condition,the heat transfer effect is obvious.

Evaporative coolingThe vertical type indirect evaporative coolerCooling efficiencyNumerical study

潘建伟、李建霞、周文和

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兰州交通大学

蒸发冷却 立管式间接蒸发冷却器 冷却效率 数值研究

2024

洁净与空调技术
中国电子工程设计院 中国电子学会洁净技术分会

洁净与空调技术

影响因子:0.264
ISSN:1005-3298
年,卷(期):2024.(1)
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