As a result of this experimental research and data from it,
a critical diameter of vortex finder is obtained. This is determined as 120 mm. A desired result has not been
obtained according to cyclone collection efficiency
despite the fact that further increase in diameter lowered
the pressure drops. That means that pressure drop can
be lowered with increasing diameter, however efficiency
of collection is lost then. In this research, the theoretical
argument of critical vortex finder is experimentally proved