Question

Spring 2016 5 [CO2] A power plant operates on a regenerative vapor power cycle with two feedwater heaters. Steam enters he first turbine stage at 12 MPa, 520°C and expands in three stages Between the first and second stages, some steam is diverted to a closed f saturated liquid condensate being pumped ahead into the boiler feedwa closed heater at 12 MPa, 170°C. Steam is extracted between the second and third turbine stages at 0.15 MPa and fed into an open feedwater heater operating at that pressure. Saturated liquid at 0.15 MPa leaves the open feedwater heater. Assume isentropic processes in the pumps and turbines. The fraction of flow extracted between the first and second stage turbines is: to the condenser pressure of 6 kPa. heater at 1 MPa, with ter line. The t leaves the 0.1229 c. 0.2165 d. 0.0052 (fill in the answer on your bubble sheet and provide supporting calculations below) e, Answer

Answer 1

3 эту 0 ISMP opey heate Lose (o we have to fond , ? = 762.SI-) a have to apply e na and envsy rate Now we Cnc d SeCond Stage tusobones is 429 S9 = 0.109b So bhe optiey b is Correct