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在空气气流中利用循环水连续喷雾或使其通过用循环水润湿的足够湿润表面时,在绝热条件下,由于水汽的蒸发,便使流过的空气加湿并降低其干球温度。如图1所示,在蒸发冷却过程中,空气状态是沿等湿球温度线,或者确切地说,是沿等热焓线变化的,即空气的热焓保持不变,干球温度降低,潜热和湿含量增加。蒸发冷却系统一般由蒸发冷却器、风机及送风管路、循环水泵及水管路等组成,小型
When continuously spraying with circulating water in an air stream or passing it through a sufficiently wetted surface moistened with circulating water, under adiabatic conditions, the flowing air is humidified and its dry bulb temperature is lowered due to vaporization of water vapor. As shown in Fig. 1, in the evaporative cooling process, the air state is along the iso-wet bulb temperature line, or rather, along the isothermal enthalpy line, ie, the enthalpy of the air remains unchanged and the dry bulb temperature decreases. Latent heat and moisture content increase. The evaporative cooling system is generally composed of evaporative coolers, fans and air supply pipes, circulating water pumps and water pipes, etc.