In order to ensure the comfort of personnel during work, improve work efficiency, or prevent the impact of static electricity on the normal operation of equipment, it is necessary to ensure the temperature and humidity of the working environment.

High temperature and humid air or seasons can easily give people a sticky and uncomfortable feeling, so it is necessary to turn on air conditioning to reduce temperature and humidity. High temperature and high humidity air will be rapidly cooled and dewed through a low-temperature air cooler. The water in the air will condense into droplets and separate from the air, which will be discharged through water pipes. The air cooler is then used to achieve the purpose of reducing temperature and humidity. Due to the continuous circulation of dehumidification, the indoor humidity is often reduced to too low, so most cold rooms need to be humidified again.