A combined cycle operates on the cycle illustrated in the figure on the next page. Work produced by GT1 is consumed by the compressor of the gas turbine cycle. Know values are: T1 = 288 K T3 = 1420 K ATpinch point = 150C Ta = 5050C P1 = P5 = P6= 101.3 kPa P2 P31347 kPa Pa Pd = 6.9 MPa Pb = 6.0 kPa Pc = 6.0 kPa (saturated liquid condition) Calculate, on the basis of 1 kg/s entering the gas turbine and neglecting the mass of the fuel added, a. Thermal efficiency assuming that no steam power plant after the gas turbine b. Thermal efficiency of the combined cycle c. Quality of the steam at the exit of the steam turbine exit d. Fraction of the total power output generated by the gas turbine Take properties of air as c= 1.005 kl/kgk and k = 1.4. Thermodynamic data for water Pressure (kPa) Tat (C) vr (m/kg) 0.00100645 36.1603 284.858 0.0013486 6.0 6900 Thermodynamic Pressure (kPa) 6900 (1) (2) compressor data for water T (OC) 505 fuel combustion chamber gas turbines (3) Vg (m/kg) 23.7342 0.0278321 v (m3/kg) 0.0492906 GT recovery boiler (4) hr(kl/kg) h (kJ/kg) 151.494 2566.67 1262.27 2773.86 h (kJ/kg) 3424.52 stack gases GT (5) (6) ww mw +ST (a) -Wnet turbines St (kJ/kgK) 0.5208 3.11255 s (kJ/kgk) 6.82331 (b) (d) + condenser (c) -steam turbines S (kJ/kgk) 8.3290 5.82234 pump