Clearance volume or bumping clearance is the space between the top of the piston and the cylinder head of an air compressor. This clearance is an important aspect of the compressors and should be as less as practically possible to improve the volumetric efficiency of the compressor.

What is the purpose of clearance volume in a reciprocating compressor?

The clearance volume in a reciprocating compressor is provided to. create turbulence in the air to be delivered. accommodate valves in the cylinder head of the compressor. increase the volumetric efficiency of the compressor.

What is a clearance volume?

Clearance volume is the volume remaining in the cylinder when the piston is at TDC. Because of the irregular shape of the combustion chamber (volume in the head) the clearance volume is calculated empirically by filling the chamber with a measured amount of fluid while the piston is at TDC.