In an ideal reheat cycle, the steam throttled condition is 8 MPa and 480 degree C. the steam is then reheated to MPa and 460 degree C. the turbine exhaust is 60 degree C. The required values of some state point properties are tabulated below. Determine the enthalpy of steam entering the reheater. O2,963.145 kJ/kgO2,934.651 kJ/kgO2,941.563 kJ/kgO2,953.416 kJ/kg WWB2.8MPa540°C13.85MPa540°C8MPa480°C 32MPa460°CS,=S,ST,=! T₂=75% 75%63.4kPa 46At P = 8 MPa and T = 480 °Cs (kJ/kg-K)h (kJ/kg)6.65863348.4At P = 2 MPa(for superheated steam with s1 = s2)s (kJ/kg-K)h (kJ/kg)6.63882952.3Sh6.68282976.4At P = 2 MPa and T = 460 °Cs (kJ/kg-K)h (kJ/kg)7.31473379.5At 60 °CPsat 19.94 kPavf = 0.0010172 m^3/kgsf = 0.8312 kJ/kg-Khf = 251.13 kJ/kgsfg = 7.0784 kJ/kg-Khfg = 2358.5 kJ/kg19.94kPa60°C

Given:- To Find:- The enthalpy of steam entering the reheater (h2)

Answered: In an ideal reheat cycle, the steam…

Elements Of Electromagnetics

7th Edition

ISBN:9780190698614

Author:Sadiku, Matthew N. O.

Publisher:Sadiku, Matthew N. O.

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In an ideal reheat cycle, the steam throttled condition is 8 MPa and 480 degree C. the steam is then reheated to MPa and 460 degree C. the turbine exhaust is 60 degree C. The required values of some state point properties are tabulated below.

Determine the enthalpy of steam entering the reheater.

O2,963.145 kJ/kg
O2,934.651 kJ/kg
O2,941.563 kJ/kg
O2,953.416 kJ/kg

WW
B
2.8MPa
540°C
13.85MPa
540°C
8MPa
480°C 3
2MPa
460°C
S,=S,
S
T,=
! T₂=
75% 75%
6
3.4kPa 4
6
At P = 8 MPa and T = 480 °C
s (kJ/kg-K)
h (kJ/kg)
6.6586
3348.4
At P = 2 MPa
(for superheated steam with s1 = s2)
s (kJ/kg-K)
h (kJ/kg)
6.6388
2952.3
S
h
6.6828
2976.4
At P = 2 MPa and T = 460 °C
s (kJ/kg-K)
h (kJ/kg)
7.3147
3379.5
At 60 °C
Psat 19.94 kPa
vf = 0.0010172 m^3/kg
sf = 0.8312 kJ/kg-K
hf = 251.13 kJ/kg
sfg = 7.0784 kJ/kg-K
hfg = 2358.5 kJ/kg
19.94kPa
60°C

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