Multi Stage Air Compressor Working Principle

The initial volume when the piston is at top is zero assuming there is no bumping clearance.

Multi stage air compressor working principle. The working principle of multistage air compressor is same as double stage air compressor. Cooling the air reduces the work needed to compress it during the second or third stages. This cooled air is passed to the intermediate stage where it is again getting compressed and heated. A pressure ratio of 4 1 could be achieved with single stage centrifugal compressor and higher pressure ratio of 12 1 is also possible to achieve with multi stage centrifugal compressor.

In three stage air compressor fresh air from the atmosphere enters in a first stage low pressure cylinder. High discharge air pressure is achieved by a multi stage air compressor. The atmospheric pressure is p1. Multi stage air compressor units with various cylinder configurations and piston shapes figure 1 above are used in conjunction with intermediate and after cooling to provide the nearest possible approach to the ideal of isothermal compression.

The impellers are assembled or mounted on a steel shaft and this assembly is known as compressor rotor mostly in multi stage compressors. In summary one stage units are for small scale projects and personal use while two stage models are more geared toward industrial scale arsenals. Losses in a centrifugal compressor. The rotor provide velocity to the gas with blades that are attached to a rotating disc.

Working principle of multi stage reciprocating compressor mp4. We normally use three stage reciprocating air compressors as a. The intake of air in the first stage gets compressed and then it is passed over a cooler to achieve a temperature very close to ambient air. The air compressor draws in air from the atmosphere.

Air will enter to the compressor at the impeller eye axially and compressed air will leave the compressor in radial direction. How multi stage compressors work multi stage compressors feature two or more piston cylinders each of a different diameter. These blades can be forward leaning radial or backward leaning depending upon the desired output. Thus as the piston moves from top to bottom a volume of air v1 is drawn into the compressor.

Air enters through a suction filter. Ultimately your choice between a one stage or multi stage compressor should be based on the size and nature of your operations. There you have to use a multi stage air compressor.