That is, dry cooler, its working process without water consumption, is through the pipe to take the liquid, the natural wind outside the pipe to cool the liquid in the pipe, reduce the temperature of the liquid in the pipe, to achieve the purpose of cooling. The dry cooler is often used as a part of the air conditioning of the energy-saving machine room. Compared with the cooling water tower, the dry cooler does not consume water during the working process, so it is a very good water-saving (energy-saving) part. At the same time, because the dry cooler is a closed system, there is no pollution to the environment (recycling is considered for maintenance). The liquid in the dry cooler is called secondary refrigerant and glycol solution is usually used in engineering.