Formula for finding the piston displacement of a compressor

Compressor can be calculated as follows:-

Where:-

V = Volume in cubic feet. 

D = Diameter of cylinder in inches. 

S = Length of stroke in inches. 

N = Number of cylinders. 

R = Revolution per minute (R.P.M.) 

The part of the cylinder volume can be calculated by multiplying the cylinder bore

 by the length of stroke. Now, if it is multiplied by number of cylinders and

revolution per minute of the compressor, the piston wsplacernent can be fonrid out.