8.67 In a steam power station working on the ideal Rankine cycle with regeneration, steam enters the turbine at 150 bar, 600°C. One open feedwater heater is used in the plant. Some steam from the turbine enters the open feedwater heater at a pressure of 12 bar. The pressure in the condenser is 0.1 bar. Determine the rate of exergy input to the working fluid passing through the steam generator, in kJ/ kg of steam entering the turbine. Let $T_0 = 288$ K and $P_0 = 1$ bar. Also, determine the rate of exergy destruction in the open feedwater heater, in kJ/kg of steam entering the turbine.
