Question

1.Steams enters a turbine operating at steady state with a mass flow rate of 4600kg/h. The turbine develops a power output of 1000kW. At the inlet, the pressure is 60 bar, the temperature is 400° C, and the velocity is 10m/s. At the exit,the pressure is 0.1 bar, the quality is 0.90, and the velocity is 50m/s. Calculate the rate of heat transfer between the turbine and surroundings, in kW. Determine the entropy generation if the temperature of the surroundings is 30° C. What is the isentropic efficiency of the turbine?

Answer 1

sol:s toookw Pi=60ba Pzz0l ban 4:019 HE4006 C'I bas Applyiay skady state enirgy belagce o) and ie) hz-hpt glzz=21) +1VEUP) = 9_- We $ ufta selving far ŷ wpth g(2,-21)=0, dat a (as/ng) Enthalpy Steam Tre) p (m pa) GiAMopy G.541 y00 3177 2345 o.ol mpa 45.8) .7 he- hyE 2345- 3197 7 -832 kJ ng cs pcanned with CamScanner

Date: Ws thiht -8327162 o. 8 30.8 y r830.8 We 1000 kw 4600 ke (8301) hs 1000 -106157) kW ०০०।) -61.57 kw cs SeannooLALiin CamScanner CS
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