EFFECT OF PASSIVES ON THE PERFORMANCE OF A CENTRIFUGAL COMPRESSOR

摘要

The aim of the present experimental investigation is to investigate the feasibility of utilizing passive means to enhance the performance of a centrifugal compressor. The experimental investigation is done with partial shroud made of mild steel fitted on the tip of the rotor blade impeller exit traverse with a pre-calibrated five hole probe, and turbulence generator made with Velcro tape fitted inside the inducer leading edge impeller inlet traverse with a pre-calibrated three hole probe, for three flow coefficients, Φ = 0.28(near design), Φ= 0.34(above design) and Φ = 0.18(below design). From the present experimental investigation, it is presumed that partial shroud on the tip of the blade has valuable impacts in efficiency and energy coefficient, as compared to without partial shroud on the tip of the blade.