Power plant has a net power output of 80 MW operates on a regenerative vapor power...

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Power plant has a net power output of 80 MW operates on a regenerative vapor power cycle with four feedwater heaters, three closed and one open, and reheat. Steam enters the turbine at 15,000 kPa, 600C, expands in three stages in high pressure turbine and then expands in three more stages to the condenser pressure of 10 kPa. Saturated liquid exits the condenser at 10 kPa. Between the first and second stages, some steam is diverted to a closed feedwater heater at 8000 kPa. Between the second and third stages, additional steam is diverted to a second closed feedwater heater at 4000 kPa. Steam is extracted between the fourth and fifth turbine stages at 800 kPa and fed into an open feedwater heater operating at that pressure. Saturated liquid at 800 kPa leaves the open feedwater heater. Between the fifth and sixth stages, some steam is diverted to a closed feedwater heater at 200 kPa. Condensate leaves cach closed feedwater heater as saturated liquid at the respective extraction pressures. (9 marks) (a) Show the cycle on a T-s diagram. (b) The fraction of steam extracted from the turbine. (c) The thermal efficiency of the cycle. (d) Determine the mass flow rate of steam. 1-y-M M. 19 17 Conden 16 Clened beate Clesed Clased Seate Obeat Draerating opes beater 12 10 11 tred punp Main boler Condensae pump Power plant has a net power output of 80 MW operates on a regenerative vapor power cycle with four feedwater heaters, three closed and one open, and reheat. Steam enters the turbine at 15,000 kPa, 600C, expands in three stages in high pressure turbine and then expands in three more stages to the condenser pressure of 10 kPa. Saturated liquid exits the condenser at 10 kPa. Between the first and second stages, some steam is diverted to a closed feedwater heater at 8000 kPa. Between the second and third stages, additional steam is diverted to a second closed feedwater heater at 4000 kPa. Steam is extracted between the fourth and fifth turbine stages at 800 kPa and fed into an open feedwater heater operating at that pressure. Saturated liquid at 800 kPa leaves the open feedwater heater. Between the fifth and sixth stages, some steam is diverted to a closed feedwater heater at 200 kPa. Condensate leaves cach closed feedwater heater as saturated liquid at the respective extraction pressures. (9 marks) (a) Show the cycle on a T-s diagram. (b) The fraction of steam extracted from the turbine. (c) The thermal efficiency of the cycle. (d) Determine the mass flow rate of steam. 1-y-M M. 19 17 Conden 16 Clened beate Clesed Clased Seate Obeat Draerating opes beater 12 10 11 tred punp Main boler Condensae pump