Conservation
of Energy – Application
Example:
Superheated water vapor enters a steam turbine at a mass flow rate
1 kg/s and exhausting as saturated steam as shown. Heat loss from the turbine is
10 kW under the following operating condition. Determine the turbine power output.
P=1.4 Mpa
T=350° C
V=80 m/s
z=10 m
P=0.5 Mpa
100% saturated steam
V=50 m/s
z=5 m
10 kw
From superheated vapor tables:
hin=3149.5
kJ/kg
From
saturated steam tables: hout=2748.7
kJ/kg
