基于湿帘蒸发冷却技术回收利用制冷冷凝水的分体式空调设计与实验应用

分体式空调在我国建筑中广泛使用,暖通空调能耗占建筑能耗可达到40%~50%,分体式空调的节能优化设计是空调节能的重要环节。分体式空调在湿负荷较大的场所,每1kW冷负荷每小时产生约0.8kg的冷凝水,冷凝水温度较低约为10~15℃。空气露点温度越高,含湿量越大,产生的冷凝水越多,而冷凝水需要设置排水管进行有组织排放,这既造成冷凝水冷量浪费又增加了排水管的管材使用。本文提出了一种基于湿帘蒸发冷却技术回收利用制冷冷凝水的分体式空调设计与实验应用。通过实验、计算和对比分析出利用制冷冷凝水后的实际节能效果,结果表明:通过利用湿帘蒸发冷却回收利用制冷冷凝水的分体式空调不仅可以提高制冷量约4.612%和能效比约9.302%,降低冷凝温度约4.685%,而且不需要设置排水管。

Split-type Air Conditioning Design and Experimental Application based on Wet Curtain Evaporative Cooling Technology for Recycling Refrigeration Condensate

Split-type air conditioners are widely used in China's buildings.HVAC energy consumption accounts for 40%~50%of building energy consumption.The energy-saving optimization design of split-type air conditioners is an important part of air-conditioning energy conservation.The split type air conditioner generates about 0.8 kg of condensed water per hour of cold load in a place with a large wet load,and the condensed water temperature is about 10 to 15℃lower.The higher the air dew point temperature,the greater the moisture content,the more condensed water is produced,and the condensate needs to be equipped with a drain pipe for organized discharge,which causes waste of condensed water and increases the use of the pipe of the drain pipe.This paper presents a design and experimental application of a split air conditioner based on the wet curtain evaporative cooling technology to recycle refrigeration condensate.Through experiments,calculations and comparisons,the actual energy efficiency after using refrigeration condensate is analyzed.The results show that the split air conditioner that utilizes the cooling condensate by using the wet curtain evaporative cooling can not only increase the cooling capacity.About 4.612%and the energy efficiency ratio is about 9.302%,the condensation temperature is lowered by about 4.685%,and there is no need to install a drain pipe.