In: Physics
A current of 5.20 kg / s of water vapor at 40.0 bar and 320 ° C is passed to an adiabatic turbine. The outlet pressure is 20.0 bar. The isentropic efficiency of the turbine is 97.4%. What is the work, in kW?
(Uses 3 significant figures)
At turbine inlet (State 1 )
AT
From steam tables
At turbine exit (state 2)
At 20 bar
The T-S diagram of the process is given below
@ 20 bar < s1 So state 2 will be in super heated region. Now we need to calculate the temp. at state 2
and
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