Air compressors are necessary for different industries as they are used in automation and assembly, agriculture and construction and also in chemical manufacturing. 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. When in the market seeking for an air compressor there is the need to pay attention to select the best compressor as a mistake will lead to financial loss on the part of the company. Different types of compressors are available which vary regarding the level of pressure of the air they are delivering, their operation methods and also the capacity of air that a given compressor can deliver. As much as one pays attention to the ability of the compressor to deliver air at high pressure and also the capacity of the air that they deliver, one also needs to identify the cost of purchasing a particular air compressor and also the durability of the equipment.
Three main types of compressors, based on the operation methods, are available in the market. The first kind of compressor is the reciprocating compressors which are categorized as positive displacement compressors. The reciprocating compressors have pumps which also have pistons and cylinders that are attached which serves to press the air reducing the volume of the air and thus resulting in the high pressures of the air being displaced from the compressor. There are two kinds of the reciprocating compressors as one can choose between the direct drive compressors and the belt drive compressors but most buyers prefer purchasing the belt drive compressors as they are durable and also have high output. The reciprocating compressors are portable and thus suits traders in construction while they are also efficient.
The second type of the air compressors which are almost similar to the reciprocating air compressors are the rotary screw compressors which also function as positive displacement compressors. 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. One can also decide to purchase the rotary screw compressors as they are easier to maintain and are also durable and in comparison with the reciprocating compressors they have larger air capacity. 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. Some of the applications of the centrifugal compressors include in automotive, air conditioners and refrigerators.
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