2) A closed, rigid container of water at 75 kPa. The pressure increases to 1.10 MPa due to heating in which the mass of the saturated liquid and vapor are found to be 0.85 kg and 0.73 kg, respectively. Find: i) The initial specific volume. ii) The final enthalpy. ii1) The initial entropy. iv) The initial enthalpy.

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
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2) A closed, rigid container of water at 75 kPa. The pressure increases to 1.10 MPa due
to heating in which the mass of the saturated liquid and vapor are found to be 0.85 kg
and 0.73 kg, respectively. Find:
i)
The initial specific volume.
ii)
The final enthalpy.
iii)
The initial entropy.
iv)
The initial enthalpy.
Transcribed Image Text:2) A closed, rigid container of water at 75 kPa. The pressure increases to 1.10 MPa due to heating in which the mass of the saturated liquid and vapor are found to be 0.85 kg and 0.73 kg, respectively. Find: i) The initial specific volume. ii) The final enthalpy. iii) The initial entropy. iv) The initial enthalpy.
Specific volume,
m2Akg
Internal energy,
Enthalpy,
kJ/kg
Entropy,
kJ/kg K
kJ/kg
Sat.
Press., temp., liquid,
Tat °C
Sat.
Sat.
Sat.
Sat.
Sat.
Sat.
Sat.
Sat.
P kPa
vapor,
liquid,
Evap.,
vapor,
liquid,
Evap.,
liquid, Evap., vapor,
vapor,
S
1.0
1.5
6.97 0.001000 129.19
13.02 0.001001 87.964
17.50 0.001001 66.990
21.08 0.001002 54.242
24.08 0.001003 45.654
29.302 2355.2
29.303 2484.4 2513.7 0.1059 8.8690 8.9749
54.688 2470.1 2524.7 0.1956 8.6314 8.8270
73.433 2459.5 2532.9 0.2606 8.4621 8.7227
88.424 2451.0 2539.4 0.3118 8.3302 8.6421
2443.9 2544.8 0.3543 8.2222 8.5765
2384.5
2392.8
54.686 2338.1
2.0
2.5
3.0
73.431 2325.5
88.422 2315.4
100.98
2398.9
2403.8
2407.9
2306.9
100.98
4.0
28.96 0.001004 34.791
32.87
121.39
2293.1
2414.5
2419.8
2432.3 2553.7 0.4224 8.0510 8.4734
2423.0 2560.7 0.4762 7.9176 8.3938
2405.3 2574.0 0.5763 7.6738 8.2501
2392.1 2583.9 0.6492 7.4996 8.1488
2372.3 2598.3 0.75497.2522 8.0071
121.39
137.75
5.0
0.001005
40.29 0.001008 19.233
28.185
137.75
2282.1
7.5
10
168.74
191.79
225.93
2261.1
2429.8
2437.2
2448.0
168.75
191.81
225.94
45.81
0.001010
53.97 0.001014
14.670
2245.4
2222.1
15
10.020
20
60.06
0.001017
7.6481
251.40
2204.6
2190.4
2456.0 251.42
2462.4
2357.5 2608.9 0.8320 7.0752 7.9073
2345.5 2617.5 0.8932 6.9370 7.8302
2335.3 2624.6 0.9441 6.8234
2318.4 2636.1 1.0261 6.6430 7.6691
2304.7 2645.2 1.0912 6.5019 7.5931
25
64.96 0.001020
6.2034
271.93
271.96
30
69.09
75.86
0.001022
0.001026
5.2287
3.9933
289.24
2178.5
2467.7 289.27
2476.3
2483.2 340.54
.76
40
317.58
340.49
2158.8
317.62
50
81.32
0.001030
3.2403
2142.7
75
100
91.76
0.001037
2.2172
1.6941
2278.0 2662.4 1.2132 6.2426 7.4558
2257.5 2675.0 1.3028 6.0562 7.3589
2256.5 2675.6 1.3069 6.0476 7.3545
2240.6 2684.9 1.3741 5.9100 7.2841
2226.0 2693.1 1.4337 5.7894 7.2231
384.36
2111.8
2496.1
2505.6
384.44
99.61
0.001043
417.40
2088.2
417.51
101.325 99.97
125
150
0.001043
1.6734
418.95
2087.0
2506.0
105.97
111.35
419.06
444.36
467.13
0.001048
1.3750
444.23
466.97
2068.8
2052.3
2513.0
2519.2
0.001053
1.1594
2213.1 2700.2 1.4850 5.6865 7.1716
2201.6 2706.3 1.5302 5.5968 7.1270
2191.0 2711.7 1.5706 5.5171 7.0877
2181.2 2716.5 1.6072 5.4453 7.0525
2172.0 2720.9 1.6408 5.3800 7.0207
2037.7
2024.6
487.01
504.71
175
116.04
0.001057
1.0037
486.82
2524.5
120.21 0.001061
123.97 0.001064
127.41 0.001067
130.58 0.001070
200
0.88578 504.50
2529.1
0.79329 520.47
0.71873 535.08
0.65732 548.57
2012.7
2001.8
2533.2
520.71
535.35
225
250
2536.8
275
1991.6
2540.1
548.86
133.52 0.001073
0.001076
138.86 0.001079
0.001081
0.001084
2163.5 2724.9 1.6717 5.3200 6.9917
2155.4 2728.6 1.7005 5.2645 6.9650
2147.7 2732.0 1.7274 5.2128 6.9402
2140.4 2735.1 1.7526 5.1645 6.9171
2133.4 2738.1 1.7765 5.1191 6.8955
300
0.60582 561.11
1982.1
2543.2 561.43
325
136.27
0.56199 572.84
1973.1
2545.9
573.19
2548.5
2550.9
2553.1 604.66
584.26
594.73
350
0.52422 583.89
1964.6
0.49133 594.32
0.46242 604.22
1956.6
1948.9
375
141.30
400
143.61
O505 O 0O5
Transcribed Image Text:Specific volume, m2Akg Internal energy, Enthalpy, kJ/kg Entropy, kJ/kg K kJ/kg Sat. Press., temp., liquid, Tat °C Sat. Sat. Sat. Sat. Sat. Sat. Sat. Sat. P kPa vapor, liquid, Evap., vapor, liquid, Evap., liquid, Evap., vapor, vapor, S 1.0 1.5 6.97 0.001000 129.19 13.02 0.001001 87.964 17.50 0.001001 66.990 21.08 0.001002 54.242 24.08 0.001003 45.654 29.302 2355.2 29.303 2484.4 2513.7 0.1059 8.8690 8.9749 54.688 2470.1 2524.7 0.1956 8.6314 8.8270 73.433 2459.5 2532.9 0.2606 8.4621 8.7227 88.424 2451.0 2539.4 0.3118 8.3302 8.6421 2443.9 2544.8 0.3543 8.2222 8.5765 2384.5 2392.8 54.686 2338.1 2.0 2.5 3.0 73.431 2325.5 88.422 2315.4 100.98 2398.9 2403.8 2407.9 2306.9 100.98 4.0 28.96 0.001004 34.791 32.87 121.39 2293.1 2414.5 2419.8 2432.3 2553.7 0.4224 8.0510 8.4734 2423.0 2560.7 0.4762 7.9176 8.3938 2405.3 2574.0 0.5763 7.6738 8.2501 2392.1 2583.9 0.6492 7.4996 8.1488 2372.3 2598.3 0.75497.2522 8.0071 121.39 137.75 5.0 0.001005 40.29 0.001008 19.233 28.185 137.75 2282.1 7.5 10 168.74 191.79 225.93 2261.1 2429.8 2437.2 2448.0 168.75 191.81 225.94 45.81 0.001010 53.97 0.001014 14.670 2245.4 2222.1 15 10.020 20 60.06 0.001017 7.6481 251.40 2204.6 2190.4 2456.0 251.42 2462.4 2357.5 2608.9 0.8320 7.0752 7.9073 2345.5 2617.5 0.8932 6.9370 7.8302 2335.3 2624.6 0.9441 6.8234 2318.4 2636.1 1.0261 6.6430 7.6691 2304.7 2645.2 1.0912 6.5019 7.5931 25 64.96 0.001020 6.2034 271.93 271.96 30 69.09 75.86 0.001022 0.001026 5.2287 3.9933 289.24 2178.5 2467.7 289.27 2476.3 2483.2 340.54 .76 40 317.58 340.49 2158.8 317.62 50 81.32 0.001030 3.2403 2142.7 75 100 91.76 0.001037 2.2172 1.6941 2278.0 2662.4 1.2132 6.2426 7.4558 2257.5 2675.0 1.3028 6.0562 7.3589 2256.5 2675.6 1.3069 6.0476 7.3545 2240.6 2684.9 1.3741 5.9100 7.2841 2226.0 2693.1 1.4337 5.7894 7.2231 384.36 2111.8 2496.1 2505.6 384.44 99.61 0.001043 417.40 2088.2 417.51 101.325 99.97 125 150 0.001043 1.6734 418.95 2087.0 2506.0 105.97 111.35 419.06 444.36 467.13 0.001048 1.3750 444.23 466.97 2068.8 2052.3 2513.0 2519.2 0.001053 1.1594 2213.1 2700.2 1.4850 5.6865 7.1716 2201.6 2706.3 1.5302 5.5968 7.1270 2191.0 2711.7 1.5706 5.5171 7.0877 2181.2 2716.5 1.6072 5.4453 7.0525 2172.0 2720.9 1.6408 5.3800 7.0207 2037.7 2024.6 487.01 504.71 175 116.04 0.001057 1.0037 486.82 2524.5 120.21 0.001061 123.97 0.001064 127.41 0.001067 130.58 0.001070 200 0.88578 504.50 2529.1 0.79329 520.47 0.71873 535.08 0.65732 548.57 2012.7 2001.8 2533.2 520.71 535.35 225 250 2536.8 275 1991.6 2540.1 548.86 133.52 0.001073 0.001076 138.86 0.001079 0.001081 0.001084 2163.5 2724.9 1.6717 5.3200 6.9917 2155.4 2728.6 1.7005 5.2645 6.9650 2147.7 2732.0 1.7274 5.2128 6.9402 2140.4 2735.1 1.7526 5.1645 6.9171 2133.4 2738.1 1.7765 5.1191 6.8955 300 0.60582 561.11 1982.1 2543.2 561.43 325 136.27 0.56199 572.84 1973.1 2545.9 573.19 2548.5 2550.9 2553.1 604.66 584.26 594.73 350 0.52422 583.89 1964.6 0.49133 594.32 0.46242 604.22 1956.6 1948.9 375 141.30 400 143.61 O505 O 0O5
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