Figure P7.113 shows a turbine operating at steady state with steam entering at p1 = 30 bar, T1 = 3501C and a mass flow rate of 30 kg/s. Process steam is extracted at p2 = 5 bar, T2 = 200?C. The remaining steam eons at p3 = 0.15 bar, x3 = 90%, and a mass flow rate 0125 kg/. Stray heat transfer and the effects of motion and gravity are negligible. Let t0 = 25?C, p0 = 1 bar. The accompanying table provides properly data at key states. For the turbine, determine the power developed and rate of exergy destruction, each in MW Also devise and evaluate an exergetic efficiency for the turbine.

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State p(bar) 1 2 3 30 5 T(°C) h(kJ/kg) s(kJ/kg. K) P₁ = 30 bar T₁ = 350°C m₁ = 30 kg/s 350 3115.3 P₂=5 bar T₂ = 200°C 200 2855.4 0.15 (x = 90%) 2361.7 7.2831 Turbine 6.7428 7.0592 3 P3= 0.15 bar x3 = 90% m3 = 25 kg/s Power out State p(bar) 1 2 3 30 5 T(°C) h(kJ/kg) s(kJ/kg. K) P₁ = 30 bar T₁ = 350°C m₁ = 30 kg/s 350 3115.3 P₂=5 bar T₂ = 200°C 200 2855.4 0.15 (x = 90%) 2361.7 7.2831 Turbine 6.7428 7.0592 3 P3= 0.15 bar x3 = 90% m3 = 25 kg/s Power out

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Given data Turbine inlet pressure P 1 30 bar Turbine inlet temperatur... View the full answer