Question

A steam power plant design consists of an ideal Rankine cycle with reheat and regeneration. Steam enters Turbine 1 at P1 and T1 at the rate of m1 and exits at P2. A fraction (y') of the steam exiting Turbine 1 is diverted to a closed feedwater heater while the remainder is reheated to T3 before entering Turbine 2. A fraction (y'') of the steam exiting Turbine 2 at P4 is diverted to an open feedwater heater while the remainder enters Turbine 3. The exit of Turbine 3 is fed into a condenser that operates at P5. Saturared liquid exits the condenser and is fed to Pump 1. The outlet of Pump 1 is fed into the open feedwater heater. Saturated liquid exits the open feedwater heater and is fed to Pump 2. The outlet of pump 2 is fed to the closed feedwater heater. Saturated liquid exits the low pressure output of the closed feedwater heater and is fed through a steam trap to the open feedwater heater. Both exits of the closed feedwater heater are at the same temperature. All turbines and pumps are isentropic.

--Given Values--
m1 (kg/s) = 50
P1 (Bar) = 160
T1 (^oC) = 520
P2 (Bar) = 15
T3 (C) = 600
P4 (Bar) = 1.5
P5 (Bar) = 0.1

a) Determine the specific enthalpy (kJ/kg) at the inlet of turbine 1 inlet.
        Your Answer = Correct! Exact Answer= 3353.3 +/- 2.49E+00
b) Determine the specific entropy (kJ/kg-K) at the inlet of turbine 1 inlet.
        Your Answer = Correct! Exact Answer= 6.3752 +/- 4.75E-03
c) Determine the specific enthalpy (kJ/kg) at the exit of turbine 1.
        Your Answer = Incorrect.
d) Determine the specific enthalpy (kJ/kg) at the inlet of turbine 2 .
        Your Answer = Correct! Exact Answer= 3694 +/- 2.46E+00
e) Determine the specific entropy (kJ/kg-K) at the inlet of turbine 2.
        Your Answer = Correct! Exact Answer= 7.8385 +/- 5.23E-03
f) Determine the specific enthalpy (kJ/kg) at the exit of turbine 2.
        Your Answer = Correct! Exact Answer= 2970.45 +/- 1.98E+00
g) Determine the specific enthalpy (kJ/kg) at the exit of turbine 3.
        Your Answer = Correct! Exact Answer= 2485.26 +/- 1.64E+00
h) Determine the specific enthalpy (kJ/kg) at the condenser exit.
        Your Answer = Correct! Exact Answer= 191.83 +/- 1.16E-01
i) Determine the specific enthalpy (kJ/kg) at the exit of the low pressure pump.
        Your Answer = Correct! Exact Answer= 191.9714 +/- 1.16E-01
j) Determine the specific enthalpy (kJ/kg) at the exit of the open feedwater heater.
        Your Answer = Correct! Exact Answer= 467.11 +/- 3.11E-01
k) Determine the specific enthalpy (kJ/kg) at the exit of the high pressure pump.
        Your Answer = Incorrect.
l) Determine the specific enthalpy (kJ/kg) at the low pressure exit of the closed feedwater heater.
        Your Answer =
m) Determine the specific enthalpy (kJ/kg) at the exit of the steam trap.
        Your Answer =
n) Determine the specific enthalpy (kJ/kg) at the inlet to the boiler.
        Your Answer =
o) Determine the fraction of flow (y') diverted to the closed feedwater heater.
        Your Answer =
p) Determine the power (MW) produced by turbine 1.
        Your Answer =
q) Determine the power (MW) produced by turbine 2.
        Your Answer =
r) Determine the fraction of flow (y'') diverted to the open feedwater heater.
        Your Answer =
s) Determine the power (MW) produced by turbine 3.
        Your Answer =
t) Determine the power (kW) required (a positive number) by the low pressure pump.
        Your Answer =
u) Determine the power (kW) required (a positive number) by the high pressure pump.
        Your Answer =
v) Determine the total rate of heat transfer (MW) supplied to the boiler.
        Your Answer =
w) Determine the thermal efficiency (%) of the power plant.
        Your Answer =

PLEASE ANSWER THE UNANSWERED QUESTIONS AND THE 2 THAT ARE WRONG, WILL RATE

Answer 1