A reheat-regenerative rankine cycle needs to produce 150MW of net power. Boiler pressure is at 15MPa. Reheat occurs at 10MPa. extractions occur at 5MPa and 2MPa for open feedwater heaters. These extractions occur after the expansion after reheating. Steam leaves the boiler and reheater at 600C. Condenser pressure is at 10kPa. SOLVE FOR: a.) Determine the amount of steam needed passing through the boiler to produce the required net power (kg/s) b.) Determine the amount of heat added to the system (kJ/s) c.) Determine the thermal efficiency of this cycle (%)
A reheat-regenerative rankine cycle needs to produce 150MW of net power. Boiler pressure is at 15MPa. Reheat occurs at 10MPa. extractions occur at 5MPa and 2MPa for open feedwater heaters. These extractions occur after the expansion after reheating. Steam leaves the boiler and reheater at 600C. Condenser pressure is at 10kPa.
SOLVE FOR:
a.) Determine the amount of steam needed passing through the boiler to produce the required net power (kg/s)
b.) Determine the amount of heat added to the system (kJ/s)
c.) Determine the thermal efficiency of this cycle (%)
ANSWERS ROUND OFF TO SIG SIGNIFICANT FIGURES
KIDNLY USE THE ATTACHED IMAGE STEAM TABLE FOR THE VALUES PLS DONT USE OTHER VALUES PLS ONLY USE THE GIVEN VALUES
PLS SOLVE IT HANDWRITTEN. DONT USE THE EXISTING SOLUTION OF THIS PROBLEM BECAUSE IT DIDNT USE THE GIVEN VALUES
PLSS PLSS PLSS REFER TO THE IMAGE FOR THE VALUES PLSS
PLS ANSWER IT AGAIN
![TABLE 2: SATURATED WATER - PRESSURE TABLE
Specific Volume, m3/kg
Internal Energy, KJ/kg
Enthalpy, KJ/kg
Entropy, KJ/(kg-K)
Press.
Sat. Temp.
oc
Sat. Vapor Sat. Liquid
Sat. Vapor Sat. Liquid
Sat. Liquid Sat. Vapor Sat. Liquid
Evap.
Evap.
Evap.
Sat. Vapor
Кра
10
45.81
0.001010
14.67
191.82
2246.1
2437.9
191.83
2392.9
2584.7
0.6493
7.5009
8.1502
Specific Volume, m3/kg
Internal Energy, KJ/kg
Enthalpy, KJ/kg
Press.
Entropy, KJ/(kg-K)
Мра
Sat. Temp.
Sat. Liquid Sat. Vapor Sat. Liquid
Evap.
Sat. Vapor Sat. Liquid
Evap.
Sat. Vapor Sat. Liquid
Evap.
Sat. Vapor
Psat
t
oc
2.0
212.42
0.001177
0.09963
906.44
1693.9
2600.3
908.79
1890.7
2799.5
2.4474
3.8935
6.3409
5.0
263.99
0.001286
0.03944
1147.81
1449.3
2597.1
1154.23
1640.1
2794.3
2.9202
3.0532
5.9734
CamScanner
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![TABLE 3-3: SUPERHEATED WATER
T
V
u
h
KJ/kg
P = 10.0 Mpa (311.06 OC)
OC
m3/kg
KJ/(kg-K)
m3/kg
KJ/kg
KJ/(kg-K)
KJ/kg
P = 15.0 Mpa (342.24 OC)
KJ/kg
Sat. Vap: 0.010337
2455.5
2610.5
5.3098
600
0.02491
3208.6
3582.3
6.6776
0.03837
3241.7
3625.3
6.9029
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