Notes

Affordable OEM Dresser Rand Compressor
Different Types of Air Compressors
An air Compressor is among the main energy consuming utilities in any industrial operation and are mainly classified in two types. The classification relies on their development and operation features.

The two main classification of Air Compressor are:


01) Positive Displacement Type

02) Dynamic Type.

You will discover particulars of each type from below description.

01) Positive Displacement Type Air Compressor.

Positive displacement types compressor are these, who mechanically displace a set volume of air right into a reduced quantity. The constant volume could be delivered by compressor when operated at fixed velocity. The discharge pressure is determined by the system load situations. If the consumption of air is extra, then discharge stress falls below the cut-off stress & compressor works on load situation.

This kinds of Air Compressor further categorized as

A) Reciprocating Air Compressor.

In this type, compressed air is generated by to & fro motion of piston contained in the cylinder(compression chamber). Each motion compresses a set quantity of free air at a specific strain. Single stage, double stage or a number of stage and single performing or double acting is the further classification of Reciprocating Air Compressor. A Vertical type Air Compressor is use for the applying of compressed air ranging in between 50 to 150 c. f. m and the Horizontal steadiness kind is most suitable for utility starting from 200 to 5000 c. f. m.

B) Rotary Air Compressor.

In this kind, air is compressed by two rotating or inter meshing rotors. According to the sort of construction Rotary Compressor could be additional categorised as (a) Rotary Screw Compressor (b) Rotary Vane compressor.

(a) Rotary Screw Compressor.

Air is compressed between two rotating screw (male & feminine screw) and casing. The compression occurred in gradually reducing house between these two elements.

(b) Rotary Vane compressor.

Air is compressed between casing & rotating rotor by the help of movable rotor blade. This kind of Air Compressor can be additional categorized as Single Stage or Double Stage Rotary Air Compressor.

02) Dynamic Type Air Compressor.

The Dynamic Type Air Compressors mechanically impart velocity to the air. This action is produced by the Impellers rotating at a excessive pace, in enclosed casing. The air is pressured right into a progressively reduced quantity. The volumetric move will vary inversely with the differential strain throughout the compressor.

This type of compressor is additional categorized as (a) Centrifugal Air Compressor (b) Axial Flow Air Compressor (c) Roots Blower Compressor.

(a) Centrifugal Air Compressor.

In a Centrifugal Air Compressor, an Impeller is mounted on a shaft and positioned inside housing, consisting of an inlet duct, a volute and a Diffuser. The velocity to the air may be impart by the high speed rotation of Impeller. The Diffuser surrounds the Impeller and act to transform the Kinetic energy of air into potential energy at a higher strain level.

( OEM engine parts arrow ) Axial Flow Air Compressor.

The Axial Flow Type Air Compressor is essentially a large capability, excessive velocity machine with traits quite totally different from the centrifugal air compressor. Each stage include two row of blades, one row rotating & the following row of blade is stationery. The rotor blades impart velocity and stress to the air as the motor turns, the rate being converted to strain in stationery blades.

(c) Roots Blower Compressor.

This kind is usually called as blower. The discharge air stress obtained from this type of machine may be very low. The Discharge Pressure of 1 bar could be obtained in Single Stage and strain of two. 2 bar is obtained from Double Stage. The discharge pressure achieved by two rotors which have separate parallel axis and rotate in reverse directions. This is the instance of Positive Displacement Compressor in Rotary Type Air Compressor.



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