Research Article

Performance Improvement of a Centrifugal Compressor by Passive Means

Table 1

Design details of the rotor.

Total pressure rise, p 300 mm WG
Volume flow rate, V 1.12 m3/s
Speed of rotation, N 2000 rpm
Shape number, 0.092
No. of rotor blades, Z 16
Inducer hub diameter, 160 mm
Inducer tip diameter, 300 mm
Rotor tip diameter, 500 mm
Blade height at the exit, 32.5 mm
Blade thickness3 mm
Blade angle at inducer tip, 35°
Blade angle at inducer hub, 53°

Blade angle at exit,
 (a) At hub: 75°
 (b) At mean section: 90°
 (c) At tip: 105°

All the angles are measured w. r. t. tangential direction