新型液体除湿空调系统的研制及性能研究

Development and Performance Research of a New Liquid Desiccant Air Conditioning System

针对江南地区湿热的气候特点,研制了新型液体除湿空调系统。该系统采用CaCl_2液体除湿和天然冷源蒸发冷却技术,通过回收天然冷源的冷量对除湿过程降温;并进一步表征了该系统的除湿及制冷性能。结果表明:随着CaCl_2溶液浓度和蠕动泵转速的升高,空气出口相对湿度和温度均呈现先下降后上升的趋势,在系统运行至25 s、CaCl_2溶液浓度为47%、蠕动泵的转速在3 300 r/min时,可使进口空气相对湿度由74%降低至60%,温度从28℃降低到23℃。

According to the hot and humid climate in Jiangnan area, a new type of liquid desiccant air conditioning system has been developed. The system adopts CaCl2 liquid desiccant and natural cold source evaporative cooling technology, and the dehumidification process is cooled by recovering the cooling capacity of natural cold source. The dehumidification and refrigeration performance of the system are characterized. The results show that with the increase of CaCl2 solution concentration and peristaltic pump speed, the relative humidity and temperature at the air outlet first decrease and then increase. When the system runs for 25 seconds, the concentration of CaCl2 solution is 47%,and the peristaltic pump speed is 3 300 r/min, the relative humidity of the inlet air can be reduced from 74% to 60%, and the temperature can be reduced from 28 ℃ to 23 ℃.