The difference between air-cooled and water-cooled screw air compressors

The difference between air-cooled and water-cooled screw air compressors

The difference between air-cooled screw machine and water-cooled screw machine:

　　The oil cooler of the air-cooled screw compressor and the compressed air after-cooler are made into one body. It is an aluminum plate-fin structure and brazed in a vacuum furnace. Once the oil leaks, it is almost irreparable and only replaced. The working principle is that hot oil and high temperature (about 80℃) gas flow in their respective pipes, the motor drives the fan to rotate, and the cold wind blows vertically through the pipes loaded with hot oil and high temperature gas to realize heat exchange, and feels passing through the radiator by hand. After the heat exchange, the air will feel very hot.

　　 Water-cooled screw compressors generally use tubular radiators. Water flows in the pipes and hot oil flows outside the pipes. After heat exchange, the cold water becomes hot water. Many manufacturers often use steel pipes instead of copper pipes to reduce costs. The water chiller must build another cooling tower to cool the hot water after heat exchange in order to participate in the next cycle. The water quality has a great impact on the radiator, and the cooling tower adds a lot of cost. Therefore, the amount of water chiller is far less than that of air coolers. However, in places with relatively large dust, such as cement plants, workshops with fusible dust, such as spraying workshops, use water coolers as much as possible. Once the water-cooled radiator becomes fouled, it is difficult to clean it. Generally, it needs to be soaked in chemical water for several days, and then blown with high-pressure water or high-pressure air.