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针对空冷机组在夏季高温天气不能满发的问题,采用喷雾增湿以降低入口空气的干球温度,选用3种喷嘴进行喷嘴组合喷雾降温性能的实验研究。对实验数据进行热湿交换分析,得到冷却效果与入口干湿球温差×供水流量(ΔT×L)间的关系并给出关系式的适用范围。通过比较相关各工况的拟合曲线,得出当ΔT×L相同时,喷嘴TF6的喷雾降温效果好于喷嘴TF8;加入第4排AM4有利于冷却效果的提高;一二四排喷雾(排间距为500mm)与一三四排喷雾(排间距为1000mm)两种排列方式的冷却效果基本相同。
Aiming at the problem that the air-cooled unit can not be full of heat in summer, spray humidification is adopted to reduce the dry-bulb temperature of the inlet air, and three kinds of nozzles are selected to carry out experimental study on the spray cooling performance of the nozzle combination. The experimental data were analyzed by heat and moisture exchange, and the relationship between the cooling effect and the temperature difference between inlet and outlet wet and dry bulb × water supply flow (ΔT × L) was obtained and the applicable range of the relation was given. By comparing the fitting curves of the relevant conditions, it can be concluded that the cooling effect of the nozzle TF6 is better than that of the nozzle TF8 when the ΔT × L is the same; the addition of the fourth row AM4 is beneficial to the cooling effect; Spacing of 500mm) and one or three rows of spray (row spacing 1000mm) two kinds of arrangement of the cooling effect is basically the same.