Table 1: Input parameters.

SymbolsParameters

Rotor to casing (d/D) ratio0.95, 0.9, 0.85, 0.80, 0.75, 0.70, 0.65, 0.60, and 0.55, when casing diameters are kept  mm
2 bar (30 psi), 3 bar (45 psi), 4 bar (60 psi), 5 bar (75 psi), 6 bar (90 psi)—inlet pressures
assuming adiabatic expansion
( /1.1) = 1.0132 bar—exit pressure
2500 rpm
45 mm length of rotor (assumed minimum)
(360/θ) number of vanes in rotor
1.4 for air
45° angle between 2 vanes (i.e., rotor contains correspondingly 8 number of vanes)
60°, injection angle at which air enters into turbine.