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本研究设计了一台由干、湿通道相结合的单元式露点蒸发冷却装置,通过实验研究了蒸发冷却装置在空气经过一级冷却的模式1和经过二级冷却的模式2两种运行模式下,不同空气入口参数时的换热效果。实验结果表明,空气的入口温度越高,换热效果越好;低湿度时空气的进出口温差比高湿度时大,但其湿球效率和露点效率反而较低,这说明2种效率并不适用于不同湿度间的冷却效果对比;模式2运行时的换热效果比模式1好。与已有研究成果对比表明,该单元式露点蒸发冷却装置的湿球效率和露点效率分别可以达到120%和88%,为露点蒸发冷却装置的优化设计提供理论依据和优化方向。
In this study, a unitized dew-point evaporative cooling device with a combination of dry and wet channels was designed. The evaporative cooling device was experimentally studied in two operating modes: air cooled by primary cooling 1 and cooled by secondary cooling 2 , Different air inlet parameters of the heat transfer effect. The experimental results show that the higher the air inlet temperature is, the better the heat transfer is. The air temperature at low humidity is higher than that at high humidity, but the wet bulb efficiency and dew point efficiency are lower, indicating that the two kinds of efficiency are not It is suitable for the comparison of the cooling effect between different humidity. The mode 2 heat transfer effect is better than the mode 1 in operation. Compared with the existing research results, the wet-bulb efficiency and dew-point efficiency of the unit-type dew-point evaporative cooling unit can reach 120% and 88% respectively, providing theoretical basis and optimization direction for the optimal design of the dew point evaporative cooling unit.