The basic cycle for a steam power plant is shown in Figure 1. The turbine operates adiabatically with inlet steam at 80 bar and 600°C, and the exhaust steam enters the condenser at 50°C with a quality of 0.96. Saturated liquid water leaves the condenser and is pumped to the boiler. Neglecting pump work and kinetic- and
The basic cycle for a steam power plant is shown in Figure 1. The turbine operates adiabatically with inlet steam at 80 bar and 600°C, and the exhaust steam enters the condenser at 50°C with a quality of 0.96. Saturated liquid water leaves the condenser and is pumped to the boiler. Neglecting pump work and kinetic- and
Introduction to Chemical Engineering Thermodynamics
8th Edition
ISBN:9781259696527
Author:J.M. Smith Termodinamica en ingenieria quimica, Hendrick C Van Ness, Michael Abbott, Mark Swihart
Publisher:J.M. Smith Termodinamica en ingenieria quimica, Hendrick C Van Ness, Michael Abbott, Mark Swihart
Chapter1: Introduction
Section: Chapter Questions
Problem 1.1P
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Transcribed Image Text:H3 - H2
Efficiency of turbine
H- H2
H = (1– x')Hug +x'Hvap
S2 = (1 – x')Suq + x'Syap
%D
H2 – H3
Efficiency of cycle =
H2 – H1
SATURATED STEAM TEMPERATURE TABLE
Int. Ener.
kJ/kg
Sat.
Spec. vol.
m2=kg
Sat.
liq.
Vr
X1000
1.0002
Enthalpy
kJ/kg
Sat.
Entropy
kJ=(kg°K)
Sat.
Sat.
liq.
Sat.
Sat.
Sat.
vap.
Vg
liq.
Uf
vap.
Ug
liq.
he
vap.
hg
vap.
Sg
°C
bar
Sf
0.01
0.01
2501
2509
2511
2512
2516
2520
2522
2523
2525
0.0061
0.0081
0.0087
0.0093
0.0107
0.0123
0.0131
0.0140
0.0150
0.0160
0.0170
0.0182
0.0194
0.0206
0.0220
0.0234
0.0249
0.0264
0.0281
0.0298
0.0317
0.0336
0.0357
0.0378
0.0401
0.0425
206.1
0.01
2376
9.156
1.0001
1.0001
1.0001
1.0001
1.0001
4.
157.2
16.79
21.00
25.21
33.61
42.01
46.19
50.40
54.59
58.80
2381
2383
2384
2387
2389
2391
2392
2393
2394
16.79
21
25.21
33.61
42.01
46.19
50.4
54.59
58.8
62.99
67.17
71.36
75.57
79.76
83.94
88.13
0.061
0.0762
0.0912
0.1212
0.151
0.1658
0.1806
0.1953
0.2099
0.2245
0.239
2535
0.2679
9.051
9.026
9.000
8.950
8.901
8.876
8.852
8.828
147.1
10
11
12
13
137.7
120.9
106.4
99.86
93.79
88.13
82.85
1.0007
1.0007
1.0007
1.0007
14
2527
77.93
73.34
69.05
65.04
61.30
57.79
54.52
51.45
48.58
45.89
8.805
8.781
8.758
8.735
8.712
8.690
8.667
8.645
8.623
8.601
8.579
8.558
8.537
8.515
15
16
17
18
19
20
21
22
23
24
25
26
27
1.0007
1.0013
1.0013
1.0013
1.0013
1.002
1.002
1.002
1.0026
1.0026
1.0032
1.0032
1.0032
62.99
67.17
71.36
75.57
79.76
83.94
88.13
2396
2397
2399
2400
2401
2403
2404
2406
2407
2409
2410
2411
2412
2414
2415
2416
2529
2531
2533
2534
2536
2538
2540
2542
2544
0.2823
0.2966
0.3108
0.3251
0.3392
92.32
96.50
100.7
104.9
109.0
113.2
117.4
121.6
125.8
92.32
96.5
100.7
104.9
109.0
113.2
0.3533
0.3673
0.3814
0.3953
0.4093
0.4231
0.4369
2545
43.36
41.00
38.78
2547
2549
2551
28
1.0038
1.0038
36.69
34.73
32.90
117.4
121.6
125.8
2553
2554
2556
8.495
8.474
8.453
29
30
1.0045
Transcribed Image Text:The basic cycle for a steam power plant is shown in Figure 1. The turbine operates
adiabatically with inlet steam at 80 bar and 600°C, and the exhaust steam enters the
condenser at 50°C with a quality of 0.96. Saturated liquid water leaves the
condenser and is pumped to the boiler. Neglecting pump work and kinetic- and
potential-energy changes determine
Thermal efficiency of the cycle .1
Turbine efficiency .2
2
Boiler
w, (turbine)
Turbine
w, (pump)
Condenser
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