Steam is delivered to turbine at 5.4 MPa and 600 degree C. Before condensation at 31 degree C, steam is extracted for feed water heating at 0.6 MPa. The turbine exhaust is 60 degree C. the required values of some state point properties are tabulated below.11. Calculate the thermal efficiency of the cycle B5.4 Mpa600°CPOHAt P = 5.4 MPa and T = 600 °Cs (kJ/kg-K)7.2206At P = 0.6 MPa(for superheated steam withs (kJ/kg-K)7.1816S7.2214At 31 °CPsat = 4.496 kPasf = 0.4507 kJ/kg-Ksfg = 7.9822 kJ/kg-K5.4 Mpa600°CP.=P,P=P=P₁0.6MPa31°Ch (kJ/kg)3663.3s1 = s= s2)h (kJ/kg)2957.2h2978.2vf = 0.0011006 m^3/kghf = 129.97 kJ/kghfg = 2428.1 kJ/kgS O 38.18%O 44.14%O 34.14%O 48.18%

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Elements Of Electromagnetics

7th Edition

ISBN:9780190698614

Author:Sadiku, Matthew N. O.

Publisher:Sadiku, Matthew N. O.

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Steam is delivered to turbine at 5.4 MPa and 600 degree C. Before condensation at 31 degree C, steam is extracted for feed water heating at 0.6 MPa. The turbine exhaust is 60 degree C. the required values of some state point properties are tabulated below.

11. Calculate the thermal efficiency of the cycle

B
5.4 Mpa
600°C
POH
At P = 5.4 MPa and T = 600 °C
s (kJ/kg-K)
7.2206
At P = 0.6 MPa
(for superheated steam with
s (kJ/kg-K)
7.1816
S
7.2214
At 31 °C
Psat = 4.496 kPa
sf = 0.4507 kJ/kg-K
sfg = 7.9822 kJ/kg-K
5.4 Mpa
600°C
P.=P,
P=P=P₁
0.6MPa
31°C
h (kJ/kg)
3663.3
s1 = s
= s2)
h (kJ/kg)
2957.2
h
2978.2
vf = 0.0011006 m^3/kg
hf = 129.97 kJ/kg
hfg = 2428.1 kJ/kg
S

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