A single stage steam turbine is supplied with steam at 5 bar, 200°Cattheratec 50kg/min. It expands into a condenser at a pressure of O.2 bar. The blade speed is 400 m/s. The nozzles are inclined at an angle of 20° to the plane of the wheel and the outlet blade angle is 30°. Neglecting friction losses, Determine power developed, blade efficiency and stage efficiency.

Mumbai University > MECH > Sem 6 > Thermal and Fluid Power Engineering

Marks: 10 M

Year: May 2015

$\text{Steam at 5 bar} 200^0C, Ms = 50 kg/min \\ \text{Condenser pressure = 0.2 bar} \\ C_0 = 400 m/s \ \ α = 200 ø = 300 \\ Solution: \\ \text{From steam tables} \\ @ 5 bar, 20^0C, h_1 = 2855.4 KJ/kg, S_1 = 7.0592 KJ/kg \\ @ 0.2 …