Experimental and theoretical analysis of surge in the centrifugal compressor

الملخص EN

Surge is an unstable operating mode of compression systems which occurs at low mass flow where the pressure delivered by the compressor is less than the plenum pressure.

This instability is global, one-dimensional and nonlinear.

It is characterized by a limit-cycle oscillation in mass flow and pressure rise.

This paper presentedapplication of active surge control in centrifugal compressor, with measurement and evaluation of the thermodynamic operational parameters of the compressor system.

In experimental work investigation the surge phenomenon by measuring and calculating mass flow rate and outlet pressure from sensors and manometers and designing plenum to move the surge line to the left side of the compressor map.

Thevariable speed compressor characteristic is derived based on energy losses in a compressor components.

Active control of surge in connection with varying speed is studied.