Direct evaporation coolin g of ai r handing unit by using plane water film sprayer is adopted in Lanzhou, which is a typical representative of the northwestward zone of China.

• 针对大量使用空调所带来的能源浪费和环境污染等问题,以兰州市为例,说明西北地区采用平面水膜淋水器对空气作直接蒸发冷却处理,能达到一般工业性空调和舒适性空调的送风要求。