The Various Types of Air Compressors
In different sectors one of the most used equipment is the air compressors as they are used in automation and assembly, agriculture, construction and the chemical manufacturing industries. The primary task of an air compressor is to convert the power from an external source mainly diesel engines and electric motors to stored energy which is released in the form of pressured air. Pressurized air is used in the industries to power machinery and equipment. It is important that one pays attention when they are selecting a compressor, as any mistake will lead to financial losses to the company. The compressors that are available in the market vary in terms of their operation methods, level of pressure that they are capable of delivering and their air capacity. One thus needs to consider the duration as well as the cost of buying the compressor when they are buying one as much as they need to purchase a compressor that will balance capacity of the air they can hold and the level of pressure that they deliver.
Three main types of compressors, based on the operation methods, are available in the market. Reciprocating compressors are the first kind of air compressors where they function as positive displacement compressors. In positive displacement compressors, the volume of the air is reduced using pumps which are driven using pistons which are attached to cylinders that compress and also displace the air where the released of has high pressure as a result of the reduced volume. One also, chooses between the direct drive and the belt drive kinds of reciprocating air compressors but it is advisable to purchase the belt drive compressors as they are durable and also effective. Due to their portability and their effectiveness the reciprocating compressors are recommendable for the building traders.
The second type of compressors is the rotary screw compressors which also function by positive displacement process. The rotary screw compressors are reliant on helical screws rather than the pistons and thus have less surges and vibration in comparison to the reciprocating compressors. They are also durable and also easy to maintain while their capacity is also larger than that of the reciprocating compressors. The rotary screw compressors are used in hospitals, construction sites and factories as they also have variable speeds allowing one to control the airflow.
The last kind of the compressors is the centrifugal compressors which rely on the momentum gained through rotating a disk to pressurize and transfer air. They are capable of delivering extremely high pressures which are controlled by way of inlet guide vanes. They are used in refrigerators, automotive and air conditioners.