What is the difference between an air cooler and a water cooler

　　Air coolers have several important advantages over water coolers:

　　Compared with the water cooler, the water is not the direct cooling medium of the air cooler, so the cost of water is saved. And the cooler is set so that the factory itself does not need to be near the water source (such as a river or lake), so it is necessary to prevent heat loss and chemical pollution of the water source. Maintenance costs are also reduced because there is no need to frequently clean scale, microbial scaling and sediment on the water side of the cooler. The corresponding pipeline is also removed, and the installation is simpler.

　　In addition, the air cooler can be operated continuously and can also be operated under the conditions of reduced heat transfer capacity through natural wind in case of power failure.　　However, the air cooler also has many limitations, compared with water, the thermal conductivity and specific heat of air are much lower, so the initial cost of the air cooler is more than that of the water cooler. Especially in cold climates, it is necessary to add cold-proof facilities to ensure that the medium does not fall below the freezing temperature, which also increases the initial investment cost.

　　Due to the large heat transfer area, the floor area of the air cooler is also larger than that of the water cooler. However, this shortcoming can be overcome by placing the air cooler on the pipe rack, so that useful floor space is not wasted　　　　The specific heat of air is low, requiring a large amount of air to be forced through the tube bundle. This can be done by using blades with large diameters that rotate at high speed, but produce a larger noise. Seasonal changes in air temperature will affect the performance of the air cooler, so it is necessary to choose a valuable control system to ensure the stability of its operation.