Classify different types of compressors. Explain each type in brief.

106views

written 5.3 years ago by

Compressors are classified as:

Positive displacement

Reciprocating compressor:

The motor windings are cooled by incoming suction vapors.

These have advantage of no leakage, less noise and compactness.

These are classified again as hermetically sealed, semi sealed and open-type

enter image description here

Rotary compressor:

In rolling piston type, roller is mounted on eccentric shaft with single blade.

In rotating vane type with four vanes the rotor is concentric with the shaft.

enter image description here

Screw compressor

The machine consists of two helically grooved rotors which rotate in a housing.

enter image description here

Centrifugal Compressor

This compressor increases pressure of low pressure vapor refrigerant to high pressure by centrifugal force.

It generally consists of an inlet casing, impeller, diffuser and a volute casing.

It is used for refrigerants that require large displacement and low condensing pressure such as R-11 and R-113

enter image description here

ADD COMMENT EDIT