A closed system is comprised of 10kg of pure water substance initially at a temperature of 400 C and a pressure of 8.5 MPa (state 1) For state 1, show the system is in the superheated vapour phase Evaluate the specific volume of the steam in state 1 using the thermodynamic property tables and compare it to the value obtained assuming the steam behaves as an ideal gas. Which value would you have most confidence in (give reasons for your choice) The system now undergoes an isentropic (constant entropy) adiabatic process on which its pressure drops to 100 kPa (state 2). For state 2 show that the system is now in two-phase region Find the work done by the system on its surroundings during the process For steam the specific gas constant = 461.5 J/kgK Use the attached table of properties
A closed system is comprised of 10kg of pure water substance initially at a temperature of 400 C and a pressure of 8.5 MPa (state 1) For state 1, show the system is in the superheated vapour phase Evaluate the specific volume of the steam in state 1 using the thermodynamic property tables and compare it to the value obtained assuming the steam behaves as an ideal gas. Which value would you have most confidence in (give reasons for your choice) The system now undergoes an isentropic (constant entropy) adiabatic process on which its pressure drops to 100 kPa (state 2). For state 2 show that the system is now in two-phase region Find the work done by the system on its surroundings during the process For steam the specific gas constant = 461.5 J/kgK Use the attached table of properties
Elements Of Electromagnetics
7th Edition
ISBN:9780190698614
Author:Sadiku, Matthew N. O.
Publisher:Sadiku, Matthew N. O.
ChapterMA: Math Assessment
Section: Chapter Questions
Problem 1.1MA
Related questions
Question
A closed system is comprised of 10kg of pure water substance initially at a temperature of 400 C and a pressure of 8.5 MPa (state 1)
For state 1, show the system is in the superheated vapour phase
Evaluate the specific volume of the steam in state 1 using the
Which value would you have most confidence in (give reasons for your choice)
The system now undergoes an isentropic (constant entropy) adiabatic process on which its pressure drops to 100 kPa (state 2).
For state 2 show that the system is now in two-phase region
Find the work done by the system on its surroundings during the process
For steam the specific gas constant = 461.5 J/kgK
Use the attached table of properties
![Superheated Steam*
T
P/[bar]
(T/°C))
350
375
400
425
450
500
600
700
["C]
t/10-2
3.428
3139
3.625
3207
6.463
3.812
3272
6.555
4.170
3398
6.723
5.476
3881
7.279
80
0.02352
V,
h, 2758
5.744
3.220
3067
6.133 6.255 6.364
2.994
2990
4.839
3641
7.019
(295.0)
S,
3.173
3189
6.390
4.279
3633
6.958
90
0.02048
t/10-2
2.578
2959
6.039
2.794
3042
6.171
2.991
3118
6.286
3.346
3256
6.484
3.673
3385
6.657
4.852
3874
7.220
V,
(303.3)
h,
2743
S. 5.679
e/10-2
h
2.453
3017
6.091
3.275
3373
6.596
100
2.241
2926
5.947
2.639
3097
6.213
2.812
3172
6.321
2.972
3241
6.419
3.831
3624
6.902
4.353
3868
7.166
v,
0.01802
(311.0)
h,
2725
5.615
S,
110
(318.0)
v/10-2
h
1.960
2889
5.856
2.169
2989
6.014
2.350
3075
6.143
2.514
3153
6.257
2.666
3225
2.949
3360
6.539
3.465
3616
6.850
3.945
3862
7.117
0.01598
V,
h, 2705
S% 5.553
6.358
V, 0.01426
h, 2685
S* 5.493
U. 0.01278
h, 2662
5.433
2.107
3052
6.076
2.265
3134
6.195
2.410
3209
6.301
3.605
3856
7.072
120
v/10-
1.719
2849
5.762
1.931
2960
5.937
2.677
3348
6.487
3.159
3607
6.802
(324.6)
v/10-2
1.509
2804
5.664
1.726
2929
5.862
1.901
3028
6.011
2.053
3114
6.136
2.193
3192
6.246
2.901
3599
6.758
3.318
3850
7.030
130
2.447
3335
6.437
(330.8)
S,
v/10-2
1.872
3093
6.079
2.679
3590
6.716
140
0.01149
V,
h. 2638
5.373
1.321
2753
5.559
1.548
2896
5.784
1.722
3003
5.946
2.006
3175
2.250
3322
6.390
3.071
3843
6.991
(336.6)
S.
6.193
150
0.01035
v/10-2
v,
h, 2611
5.312
1.146
2693
5.443
1.391
2861
5.707
1.566
2977
5.883
1.714
3073
6.023
1.844
3157
6.142
2.078
3309
6.345
2.487
3581
6.677
2.857
3837
6.954
(342.1)
v. 0.00932
h, 2582
S* 5.248
v/10-2
h
1.427
2949
5.820
160
0.976
2617
5.304
1.248
2821
5.626
1.573
3051
5.968
1.702
3139
6.093
1.928
3295
6.301
2.319
3573
6.639
2.670
3831
6.919
(347.3)
t/10-2
h
1.117
2778
5.541
1.576
3121
6.044
1.796
3281
6.260
170
0.00838
1.303
2920
5.756
1.449
3028
5.914
2.171
3564
6.603
2.506
3825
6.886
V,
(352.3)
h,
2548
5.181
2.039
3555
6.569
180
0.00751
2510
0.997
2729
5.449
1.191
2888
5.691
1.338
3004
5.861
1.463
3102
5.997
1.678
3268
6.219
2.359
3818
6.855
v/10-2
h,
S. 5.108
(357.0)
0.882
2674
5.348
1.089
2855
5.625
190
0.00668
V,
h, 2466
S% 5.027
0.00585
1.238
2980
5.807
1.362
3082
5.950
1.572
3254
6.180
1.921
3546
6.536
2.228
3812
6.825
E/10-2
(361.4)
v/10-[m/kg] 0.768
h/[kJ/kg]
s/[kJ/kg k]
0.995
2819
5.556
1.270
3062
5.904
200
V,
h,
1.147
2955
5.753
1.477
3239
6.142
1.815
3537
6.505
2.110
3806
(365.7)
2411
2605
5.228
S. 4.928
6.796
210
v/10-2
h
0.00498
0.650
0.908
2500
2781
5.050 5.484
1.064
2928
5.699
1.187
3041
5.859
1.390
3225
6.105
1.719
3528
6.474
2.003
3799
6.768
V,
(369.8)
h,
2336
S% 4.803
220
(373.7)
0.450 0.825
2300
2738
4.725
5.409
1.111
3020
5.813
1.906
3793
6.742
0.00368
0.987
2900
5.645
1.312
3210
6.068
6/10-2
1.632
3519
6.444
V,
h, 2178
S. 4.552
V. 0.00317
h. 2084
4.406
0.351
2139
4.490
221.2
v/10-2
0.163
1637
3.708
0.816
2733
5.398
0.978
2896
5.638
1.103
3017
5.807
1.303
3208
6.064
1.622
3518
6.441
1,895
3792
6.739
(374.15)](/v2/_next/image?url=https%3A%2F%2Fcontent.bartleby.com%2Fqna-images%2Fquestion%2Feb9eb4d2-2a3c-4f42-8c5c-cfe2909c2bb6%2F71e5b857-9dd7-468b-bd77-a7ce520b015b%2F2vrf52_processed.png&w=3840&q=75)
Transcribed Image Text:Superheated Steam*
T
P/[bar]
(T/°C))
350
375
400
425
450
500
600
700
["C]
t/10-2
3.428
3139
3.625
3207
6.463
3.812
3272
6.555
4.170
3398
6.723
5.476
3881
7.279
80
0.02352
V,
h, 2758
5.744
3.220
3067
6.133 6.255 6.364
2.994
2990
4.839
3641
7.019
(295.0)
S,
3.173
3189
6.390
4.279
3633
6.958
90
0.02048
t/10-2
2.578
2959
6.039
2.794
3042
6.171
2.991
3118
6.286
3.346
3256
6.484
3.673
3385
6.657
4.852
3874
7.220
V,
(303.3)
h,
2743
S. 5.679
e/10-2
h
2.453
3017
6.091
3.275
3373
6.596
100
2.241
2926
5.947
2.639
3097
6.213
2.812
3172
6.321
2.972
3241
6.419
3.831
3624
6.902
4.353
3868
7.166
v,
0.01802
(311.0)
h,
2725
5.615
S,
110
(318.0)
v/10-2
h
1.960
2889
5.856
2.169
2989
6.014
2.350
3075
6.143
2.514
3153
6.257
2.666
3225
2.949
3360
6.539
3.465
3616
6.850
3.945
3862
7.117
0.01598
V,
h, 2705
S% 5.553
6.358
V, 0.01426
h, 2685
S* 5.493
U. 0.01278
h, 2662
5.433
2.107
3052
6.076
2.265
3134
6.195
2.410
3209
6.301
3.605
3856
7.072
120
v/10-
1.719
2849
5.762
1.931
2960
5.937
2.677
3348
6.487
3.159
3607
6.802
(324.6)
v/10-2
1.509
2804
5.664
1.726
2929
5.862
1.901
3028
6.011
2.053
3114
6.136
2.193
3192
6.246
2.901
3599
6.758
3.318
3850
7.030
130
2.447
3335
6.437
(330.8)
S,
v/10-2
1.872
3093
6.079
2.679
3590
6.716
140
0.01149
V,
h. 2638
5.373
1.321
2753
5.559
1.548
2896
5.784
1.722
3003
5.946
2.006
3175
2.250
3322
6.390
3.071
3843
6.991
(336.6)
S.
6.193
150
0.01035
v/10-2
v,
h, 2611
5.312
1.146
2693
5.443
1.391
2861
5.707
1.566
2977
5.883
1.714
3073
6.023
1.844
3157
6.142
2.078
3309
6.345
2.487
3581
6.677
2.857
3837
6.954
(342.1)
v. 0.00932
h, 2582
S* 5.248
v/10-2
h
1.427
2949
5.820
160
0.976
2617
5.304
1.248
2821
5.626
1.573
3051
5.968
1.702
3139
6.093
1.928
3295
6.301
2.319
3573
6.639
2.670
3831
6.919
(347.3)
t/10-2
h
1.117
2778
5.541
1.576
3121
6.044
1.796
3281
6.260
170
0.00838
1.303
2920
5.756
1.449
3028
5.914
2.171
3564
6.603
2.506
3825
6.886
V,
(352.3)
h,
2548
5.181
2.039
3555
6.569
180
0.00751
2510
0.997
2729
5.449
1.191
2888
5.691
1.338
3004
5.861
1.463
3102
5.997
1.678
3268
6.219
2.359
3818
6.855
v/10-2
h,
S. 5.108
(357.0)
0.882
2674
5.348
1.089
2855
5.625
190
0.00668
V,
h, 2466
S% 5.027
0.00585
1.238
2980
5.807
1.362
3082
5.950
1.572
3254
6.180
1.921
3546
6.536
2.228
3812
6.825
E/10-2
(361.4)
v/10-[m/kg] 0.768
h/[kJ/kg]
s/[kJ/kg k]
0.995
2819
5.556
1.270
3062
5.904
200
V,
h,
1.147
2955
5.753
1.477
3239
6.142
1.815
3537
6.505
2.110
3806
(365.7)
2411
2605
5.228
S. 4.928
6.796
210
v/10-2
h
0.00498
0.650
0.908
2500
2781
5.050 5.484
1.064
2928
5.699
1.187
3041
5.859
1.390
3225
6.105
1.719
3528
6.474
2.003
3799
6.768
V,
(369.8)
h,
2336
S% 4.803
220
(373.7)
0.450 0.825
2300
2738
4.725
5.409
1.111
3020
5.813
1.906
3793
6.742
0.00368
0.987
2900
5.645
1.312
3210
6.068
6/10-2
1.632
3519
6.444
V,
h, 2178
S. 4.552
V. 0.00317
h. 2084
4.406
0.351
2139
4.490
221.2
v/10-2
0.163
1637
3.708
0.816
2733
5.398
0.978
2896
5.638
1.103
3017
5.807
1.303
3208
6.064
1.622
3518
6.441
1,895
3792
6.739
(374.15)
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