How to Select the Right Air Compressor
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 air compressors function by converting power from an external source, primary an electric motor and diesel engines where they convert the electric power to the stored energy released in the form of pressurized air. Pressurized air is used in the industries to power machinery and equipment. When selecting the compressor to purchase, there is the need to be keen as they are costly equipment and any mistake will cost the company huge amount of finances. 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. 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. One kind of the compressors is the reciprocating compressors which work 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 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. 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 also allow one to control the airflow as they come with variable speeds and are widely used in hospitals, construction sites and factories.
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. One can also control the pressure of the air as they have inlet guide vanes. They are used in refrigerators, automotive and air conditioners.