常州国棉一厂1980年12月至1981年4月将地下水抽出(若用自来水成本要高),经二级冷却塔自然冷却方式,再经元压滤池进行过滤消毒后灌入100多米的深井中贮存,到7月高温期抽出供车间降温使用。此时抽出的水出口水温为16.6℃(未经冬灌时水出口温度为20.5℃)。采用这种方法1981年纺纱车间平均温度保持在33.3℃(比不采用这种方法的去年降低1℃多), Changzhou National Cotton No. 1 Plant extracted groundwater from December 1980 to April 1981 (if the cost of tap water is higher), it is cooled by the secondary cooling tower and then filtered and sterilized by a pressure filter and then poured into more than 100 meters. Stored in deep wells and extracted from the high temperature period in July for cooling in the workshop. The water temperature at the outlet of the water extracted at this time was 16.6°C (the water outlet temperature was 20.5°C without winter irrigation). Using this method, the average spinning shop temperature was kept at 33.3°C in 1981 (more than 1°C lower than last year without this method),