An ideal Rankine cycle operates between the pressure limits of 6 bar and 0.1 bar with steam as the working fluid (data above). Saturated water leaves the condenser and the turbine inlet temperature is 250°C. You may assume that the work input to the boiler feed water pump is negligible. Estimate the efficiency of the cycle and determine the turbine power in kJ/kg. A-1 Saturated Steam-Pressure IncrementsT(Celsius)P(bar)A(J/kg)A(kJ/kg)$(kJ/kg K) S (kJ/kg K)6.970.0129.32513.70.10598.974917.490.0273.42532.90.26068.722624.080.03101.02544.80.35438.576428.960.04121.42553.7042248.473432.880.05137.72560.7047628.393836.160.06151.52566.60.52088.329039.000.07163.42571.70.55908.274541.510.08173.8257620.59258.227343.760.09183.32580.20.62238.185845.810.1191.82583.90.64928.148853.970.15225.92598.30.75498.007160.0602251.42608.90.83207.907264.960.25272.0261740.89327.8302P= 6 barT (C)V(m'/kg) Ü(KJ/kg) A(kJ/kg) $ (kJ/kg-K)158.8260.3162566.82756.16.7592501001502000.3522639.32850.66.96832500.3942721.22957.67.18323000.4342801.43062.07.37403500.4742881.63166.17.54814000.5142962.53270.87.7097

The T-S diagram of above cycle is

Answered: An ideal Rankine cycle operates between…

Elements Of Electromagnetics

7th Edition

ISBN:9780190698614

Author:Sadiku, Matthew N. O.

Publisher:Sadiku, Matthew N. O.

ChapterMA: Math Assessment

Section: Chapter Questions

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An ideal Rankine cycle operates between the pressure limits of 6 bar and 0.1 bar with steam as the working fluid (data above). Saturated water leaves the condenser and the turbine inlet temperature is 250°C. You may assume that the work input to the boiler feed water pump is negligible. Estimate the efficiency of the cycle and determine the turbine power in kJ/kg.

A-1 Saturated Steam-Pressure Increments
T(Celsius)
P(bar)
A(J/kg)
A(kJ/kg)
$(kJ/kg K) S (kJ/kg K)
6.97
0.01
29.3
2513.7
0.1059
8.9749
17.49
0.02
73.4
2532.9
0.2606
8.7226
24.08
0.03
101.0
2544.8
0.3543
8.5764
28.96
0.04
121.4
2553.7
04224
8.4734
32.88
0.05
137.7
2560.7
04762
8.3938
36.16
0.06
151.5
2566.6
0.5208
8.3290
39.00
0.07
163.4
2571.7
0.5590
8.2745
41.51
0.08
173.8
25762
0.5925
8.2273
43.76
0.09
183.3
2580.2
0.6223
8.1858
45.81
0.1
191.8
2583.9
0.6492
8.1488
53.97
0.15
225.9
2598.3
0.7549
8.0071
60.06
02
251.4
2608.9
0.8320
7.9072
64.96
0.25
272.0
26174
0.8932
7.8302
P= 6 bar
T (C)
V(m'/kg) Ü(KJ/kg) A(kJ/kg) $ (kJ/kg-K)
158.826
0.316
2566.8
2756.1
6.7592
50
100
150
200
0.352
2639.3
2850.6
6.9683
250
0.394
2721.2
2957.6
7.1832
300
0.434
2801.4
3062.0
7.3740
350
0.474
2881.6
3166.1
7.5481
400
0.514
2962.5
3270.8
7.7097

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