Water is the working fluid in an ideal Ranking cycle. Superheated vapor enters t

Question

Water is the working fluid in an ideal Ranking cycle. Superheated vapor enters the turbine at 10MPa, 480Celsius and the condenser pressure is 6KPa. Determine for the cycle a) the rate of heat transfer to the working fluid passingthrough the steam generator in kJ per kg of steam flowing.
b)the thermal efficiency.
c)the rate of heat transger from the working fluidpassing through the condenser to the cooling water, in kJ per kg ofsteam flowing. Superheated vapor enters the turbine at 10MPa, 480Celsius and the condenser pressure is 6KPa. Determine for the cycle a) the rate of heat transfer to the working fluid passingthrough the steam generator in kJ per kg of steam flowing.
b)the thermal efficiency.
c)the rate of heat transger from the working fluidpassing through the condenser to the cooling water, in kJ per kg ofsteam flowing.

Explanation / Answer

First fix the states. so: State 1: p1=10mpa T1=480C State2: p2=6 kpa s2=s1 find quality using entopy then find enthalpy state 3: p3=6 kpa sat liquid use this to find enthalpy state 4: h4=h3+v3(p4-p3) a) Qin/m=(h1-h4) b) Wcycle/Qin     Wcycle/m=Wt/m-Wp/m     Wt/m=(h2-h2)     Wp/m=(h4-h3) c) Qout/m=(h2-h3) That should be it, please rate thanks.

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