The aim of this work is to study the effect of the flow in the induction system on
the reciprocating air compressor performance. The study was carried out on the
reciprocating air compressor with two cylinders and three stages. The cooling
between two cylinders occurs by the air and used three pipes with different length
and diameter. A mathematical model is presented to calculate the pressure,
temperature, volume, mass and volumetric efficiency. This model depends on the
Runge-Kutla method to solve the differential equation system. The result show that
when used the multi – stage air compressor increases as result of efficiency air
cooling , the length and diameter of the induction pipe and velocity of compressor
have a significant influence on the compression wave capacity also the final
pressure generated in compression space which caused to increase the volumetric
efficiency .