Since the pre cooling air temperature of nitrogen unit is too high, the measure and process design scheme for using the refrigerant water to reduce the pre-cooling air temperature are recommended.
针对气体车间制氮装置预冷空气温度过高的问题，提出了利用冷媒水降低预冷空气温度的措施及工艺改造方案，并对空气冷却器的工艺计算做了较详细的介绍。
It works by drawing air through filters to remove dust and particles, then cooling it to just below the temperature at which dew forms.
该产品的原理是：通过过滤器抽取空气，除掉其中的灰尘和小颗粒，接着将空气冷却至水的凝点。
After cooler work principle is that use of the cooling medium (such as water or air) and after cooler the exit of compressed air temperature difference.
后冷却器的工作原理在于利用了冷却介质(如水或空气)与后冷却器出口处压缩空气的温度差异。
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