An ideal steam Rankine cycle with superheat operates between 50 kPa and 7 MPa with a maximum temperature of 900 K. The followingproperties were found when the cycle included an ideal pump and turbine.StateP (kPa)T(K)h (kJ/kg)S (kJ/kg*K)50Sat liq340,541.09122s7000354.86347.691.0912370009003714.37.16284s50354.472492.77.1628Combustionproducts(to stack)Fuel andair inBoilerWaterSteamturbinepumpElectricalgeneratorCondenserCoolingwater inCoolingwater outFind the thermal efficiency of this ideal Rankine cycle with superheat.a.b.Find the power output from an actual turbine with isentropic efficiency of 90% and flow rate of 0.5 kg/s operating with the sameinflow conditions and outflow pressure.Determine the temperature and enthalpy at the outflow of the actual turbine. (The steam tables needed are found in the equationC.sheet.)

Drawing the T-s diagram of the cycle,

Answered: Ideal steam Rankine cycle with…

Ideal steam Rankine cycle with superheat operates between 50 kPa and 7 MPa with a maximum temperature of 900 K. The following properties were found when the cycle included an ideal pump and turbine.

Elements Of Electromagnetics

7th Edition

ISBN:9780190698614

Author:Sadiku, Matthew N. O.

Publisher:Sadiku, Matthew N. O.

ChapterMA: Math Assessment

Section: Chapter Questions

Problem 1.1MA

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Question

An ideal steam Rankine cycle with superheat operates between 50 kPa and 7 MPa with a maximum temperature of 900 K. The following
properties were found when the cycle included an ideal pump and turbine.
State
P (kPa)
T(K)
h (kJ/kg)
S (kJ/kg*K)
50
Sat liq
340,54
1.0912
2s
7000
354.86
347.69
1.0912
3
7000
900
3714.3
7.1628
4s
50
354.47
2492.7
7.1628
Combustion
products
(to stack)
Fuel and
air in
Boiler
Water
Steam
turbine
pump
Electrical
generator
Condenser
Cooling
water in
Cooling
water out
Find the thermal efficiency of this ideal Rankine cycle with superheat.
a.
b.
Find the power output from an actual turbine with isentropic efficiency of 90% and flow rate of 0.5 kg/s operating with the same
inflow conditions and outflow pressure.
Determine the temperature and enthalpy at the outflow of the actual turbine. (The steam tables needed are found in the equation
C.
sheet.)

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