How does a centrifugal compressor work?

The centrifugal compressor draws air into the center of the rotating impeller with the help of radial blades. This all happens because of the centrifugal force. With the radial movement of the air, there is a significant rise in the pressure and it generates the kinetic energy. Before the air enters into the impeller, this kinetic energy also converts into pressure on passing through the diffuser and the volute.

Every stage in the compressor unit is responsible for the overall rise in the pressure. But with the requirement of pressure, all the stages come in an arrangement of series to achieve high pressure. In today’s centrifugal compressor, the impellers get a drive from high-speed motors. This helps in implementing smaller sizes of the compressor and without a gearbox. This eliminates the oil lubrication system and is applicable for applications which require oil-free air. This multi-stage application of centrifugal compressor is applicable in oil & gas and process industries.

Major advantages of Centrifugal compressor

  • Centrifugal compressors have a wide operating range.
  • They offer good performance with huge efficiency and provide high flow capacity.
  • These compressors need less maintenance. They come with low maintenance costs than reciprocating compressors.
  • Such compressors have less initial costs.
  • The centrifugal compressors have a medium capacity of storage
  • They are very reliable in nature.