PPT Slide

Energy Conservation(cont.)

Example: Superheated water vapor is entering the steam turbine with a mass

flow rate of 1 kg/s and exhausting as saturated steamas shown. Heat loss from

the turbine is 10 kW under the following operating condition. Determine the

power output of the turbine.

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 table:

hin=3149.5 kJ/kg

From saturated steam table: hout=2748.7 kJ/kg

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