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对逆流式间接蒸发冷却器的性能进行研究,分析其进出口空气速度及通道的变化对性能的影响,并基于响应面曲线法对其性能进行优化。结果显示,在进气速度0.5m/s~4m/s的范围内,通道高度分别为3mm、5mm和7mm时,温度能降低16.81K、15.71K和13.1K,工作通道进出口压力差值变化分别为24.23Pa~481.46Pa、21.65Pa~241.13Pa和12.65Pa~163.09Pa,表明较小尺寸的通道可以实现更好降温效果,而较大尺寸的通道压力变化较小,可见进气速度和通道尺寸对蒸发冷却器的性能影响十分显著;进一步的优化获得了最优的性能参数,为间接蒸发冷空调的应用提供了理论指导。
The performance of countercurrent indirect evaporative cooler was studied. The influence of inlet and outlet air velocities and channels on performance was analyzed. The performance of countercurrent indirect evaporative cooler was optimized based on the response surface curve method. The results show that the temperature can be reduced by 16.81K, 15.71K and 13.1K at inlet air velocities of 0.5m / s ~ 4m / s and channel heights of 3mm, 5mm and 7mm, respectively. Respectively, 24.23Pa ~ 481.46Pa, 21.65Pa ~ 241.13Pa and 12.65Pa ~ 163.09Pa, indicating that the smaller size of the channel can achieve better cooling effect, while larger channel pressure changes are small, showing the intake speed and channel The size has a significant impact on the performance of the evaporative cooler; further optimization obtains the optimal performance parameters, which provide theoretical guidance for the application of indirect evaporative cooling air conditioning.