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WORKING AND CONSTRUCTION OF CENTRIFUGAL COMPRESSOR

 In this type of compressor, air enters axially and leaves radially.

CONSTRUCTION : 

The arrangement of centrifugal compressor consists of  rotating Impeller , a casing and a diffuser. The impeller consists of a disc on which radial blades are attached. The impeller is surrounded by casing. The diffuser is another important part of the compressor, which is used to convert kinetic energy of air into pressure energy. The air coming out from the diffuser is collected in the casing and taken out from the outlet of the compressor. The Impeller of a centrifugal compressor can be run at the speed of 20,000 to 30,000 rpm. 






WORKING :


When the power is given to compressor, the impeller rotates, and it sucks the air. This air enters axially with low velocity. The velocity and pressure of the air passing through the impeller are partially increased. Then the air is entered into diffuser. In the diffuser, kinetic energy is converted into pressure energy. So, the pressure of air is further increased . Finally, the air at high pressure is delivered to the receiver. Nearly half of the total pressure rise is achieved in the impeller and remaining half  in the diffuser. The change of pressure. The change of pressure and velocity of air passing through the impeller and diffuser. 

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