Single-shell, two-tube pass heat exchanger with surface area 0.4 m2 and overall heat transfer coefficient of 1800 W/m2.K; saturated steam at 110°C condenses on one side while water at a flow rate of 0.35 kg/s enters at 17°C. Calculate (a) Outlet temperature of the water (b) Rate of condensation of steam. cp(water)=4179 J/kg. K. 016 Thermodynamics

Elements Of Electromagnetics
7th Edition
ISBN:9780190698614
Author:Sadiku, Matthew N. O.
Publisher:Sadiku, Matthew N. O.
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Single-shell, two-tube pass heat exchanger with surface area 0.4 m? and
overall heat transfer coefficient of 1800 W/m2-K; saturated steam at 110°C
condenses on one side while water at a flow rate of 0.35 kg/s enters at 17°C.
Calculate (a) Outlet temperature of the water (b) Rate of condensation of steam.
cp(water)=4179 J/kg. K.
916 I
Thermodynamics
TABLE A-4
Saturated water-Temperature table
Internal energy,
Specific volume,
m/kg
Enthalpy.
KJ/kg
Entropy,
kJ/kg - K
k/kg
Sa.
Sat
Sat.
Sat.
Sat.
Sat.
Sat.
Sat.
liquid, Evap., vapor,
Sat.
Temp.,
liquid,
liquid,
Evap..
liquid,
Evap.,
press.
Pst kPa
vapor,
vapor,
vapor,
T°C
Up
he
0.001000
0.001000
0.000
21.019
42.020
2374.9
2374.9
0.001
21.020
42.022
0.0000 9.1556 9.1556
0.0763
0.1511 8.7488 8.8999
0.2245 8.5559 8.7803
0.2965 8.3696 8.6661
0.01
5
10
0.6117
0.8725
1.2281
206.00
147.03
106.32
2360.8
2346.6
2381.8
2388.7
2500.9
2489.1
2477.2
2500.9
2510.1
2519.2
8.9487 9.0249
15
20
0.001000
0.001001
2.3392 0.001002
2332.5
2318.4
2395.5
2402.3
2465.4
2453.5
1.7057
77.885
62.980
83.913
62.982
83.915
2528.3
2537.4
57.762
104.83
125.73
146.63
167.53
188.43
25
30
0.3672 8.1895 8.5567
0.4368 8.0152 8.4520
0.5051 7.8466 8.3517
0.5724 7.6832 8.2556
0.6386 7.5247 8.1633
3.1698
0.001003
43.340
32.879
2304.3
2290.2
2276.0
2409.1
2415.9
2422.7
104.83
125.74
2441.7
2429.8
2546.5
4.2469
0.001004
2555.6
2564.6
2573.5
35
40
45
5.6291 0.001006
7.3851 0.001008
9.5953
25.205
19.515
15.251
2261.9
2247.7
2429.4
2436.1
146.64
167.53
188.44
2417.9
2406.0
-2394.0
0.001010
2582.4
209.33
2233.4
2219.1
2204.7
2190.3
50
12.352
2382.0
0.001012
0.001015
0.001017
12.026
9.5639
7.6670
6.1935
2442.7
2449.3
209.34
2591.3
0.7038 7.3710 8.0748
15.763
55
60
65
0.7680 7.2218 7.9898
0.8313
0.8937 6.9360 7.8296
0.9551 6.7989 7.754O
230.24
251.16
230.26
251.18
272.12
2369.8
2357.7
2600.1
2608.8
19.947
7.0769 7.9082
0.001020
0.001023
2455.9
2462.4
2468.9
25.043
272.09
293.04
2345.4
2333.0
2617.5
2626.1
70
31.202
5.0396
2175.8
293.07
313.99
75
80
2161.3
2146.6
2131.9
2475.3
2481.6
38.597
0.001026
0.001029
0.001032
4.1291
3.4053
2.8261
314.03
2320.6
2308.0
2295.3
2282.5
2269.6
1.0158 6.6655 7.6812
1.0756 6.5355 7.6111
1.1346 6.4089 7.5435
1.1929
1.2504 6.1647 7.4151
2634.6
2643.0
47.416
57.868
70.183
334.97
355.96
335.02
356.02
85
90
2487.8
2117.0
2102.0
2494.0
2500.1
2651.4
2659.6
2667.6
6.2853 7.4782
0.001036
0.001040
2.3593
1.9808
376.97
398.00
377.04
398.09
95
84.609
101.42
120.90
143.38
169.18
2087.0
2071.8
2056.4
2040.9
100
0.001043
0.001047
0.001052
1.6720
1.4186
419.06
2506.0
419.17
2675.6
2683.4
2691.1
2698.6
2706.0
2256.4
1.3072 6.0470 7.3542
2511.9
2517.7
105
440.15
461.27
440.28
461.42
2243.1
110
115
0.001056
0.001060
1.2094
1.0360
0.89133
2229.7
2216.0
2202.1
1.3634 5.9319 7.2952
1.4188 5.8193 7.2382
1.4737 5.7092 7.1829
2523.3
2528.9
482.42
482.59
503.81
120
198.67
503.60
2025.3
1.5279 5.6013 7.1292
125
130
135
232.23
270.28
313.22
0.001065
0.001070
0.001075
0.001080
0.001085
0.77012
0.66808
0.58179
524.83
546.10
567.41
2009.5
1993.4
1977.3
2534.3
2539.5
2544.7
525.07
546.38
567.75
2713.1
2720.1
2726.9
2188.1
2173.7
1.5816 5.4956 7.0771
1.6346 5.3919 7.0265
140
145
361.53
415.68
0.50850
0.44600
2549.6
2554.4
2159,1
2144.3
2129.2
1.6872 5.2901 6.9773
1.7392 5.1901 6.9294
1.7908 5.0919 6.8827
588.77
1960.9
1944.2
589.16
610.64
2733.5
610.19
2739.8
150
155
476.16
543.49
0.001091
0.001096
0.39248
0.34648
631.66
653.19
674.79
1927.4
1910.3
1893.0
2113.8
2098.0
1.8418 4.9953 6.8371
1.8924
1.9426
2559.1
632.18
653.79
2745.9
2563.5
2567.8
2571.9
2575.7
2751.8
2757.5
2762.8
4.9002 6.7927
4.8066 6.7492
160
165
170
618.23
700.93
792.18
0.001102
0.001108
0.001114
0.30680
0.27244
0.24260
696.46
718.20
1875.4
1857.5
675.47
697.24
719.08
2082.0
2065.6
1.9923 4.7143 6.7067
2.0417
2048.8
2767.9
4.6233 6.6650
175
892.60
1002.8
1123.5
1255.2
0.001121
0.21659
740.02
1839.4
2579.4
741.02
2031.7
2772.7
2.0906 4.5335 6.6242
0.001127
0.001134
0.001141
0.001149
0.001157
761.92
783.91
763.05
785.19
807.43
4.4448 6.5841
180
185
190
0.19384
1820.9
1802.1
1783.0
2582.8
2586.0
2589.0
2014.2
1996.2
1977.9
2777.2
2781.4
2.1392
2.1875 4.3572 6.5447
2.2355 4.2705 6.5059
2.2831
0.17390
2785.3
2788.8
2792.0
0.15636
806.00
828.18
850.46
195
4.1847 6.4678
1398.8
1554.9
0.14089
0.12721
1763.6
1743.7
2591.7
2594.2
829.78
852.26
1959.0
1939.8
200
2.3305 4.0997 6.4302
Transcribed Image Text:Single-shell, two-tube pass heat exchanger with surface area 0.4 m? and overall heat transfer coefficient of 1800 W/m2-K; saturated steam at 110°C condenses on one side while water at a flow rate of 0.35 kg/s enters at 17°C. Calculate (a) Outlet temperature of the water (b) Rate of condensation of steam. cp(water)=4179 J/kg. K. 916 I Thermodynamics TABLE A-4 Saturated water-Temperature table Internal energy, Specific volume, m/kg Enthalpy. KJ/kg Entropy, kJ/kg - K k/kg Sa. Sat Sat. Sat. Sat. Sat. Sat. Sat. liquid, Evap., vapor, Sat. Temp., liquid, liquid, Evap.. liquid, Evap., press. Pst kPa vapor, vapor, vapor, T°C Up he 0.001000 0.001000 0.000 21.019 42.020 2374.9 2374.9 0.001 21.020 42.022 0.0000 9.1556 9.1556 0.0763 0.1511 8.7488 8.8999 0.2245 8.5559 8.7803 0.2965 8.3696 8.6661 0.01 5 10 0.6117 0.8725 1.2281 206.00 147.03 106.32 2360.8 2346.6 2381.8 2388.7 2500.9 2489.1 2477.2 2500.9 2510.1 2519.2 8.9487 9.0249 15 20 0.001000 0.001001 2.3392 0.001002 2332.5 2318.4 2395.5 2402.3 2465.4 2453.5 1.7057 77.885 62.980 83.913 62.982 83.915 2528.3 2537.4 57.762 104.83 125.73 146.63 167.53 188.43 25 30 0.3672 8.1895 8.5567 0.4368 8.0152 8.4520 0.5051 7.8466 8.3517 0.5724 7.6832 8.2556 0.6386 7.5247 8.1633 3.1698 0.001003 43.340 32.879 2304.3 2290.2 2276.0 2409.1 2415.9 2422.7 104.83 125.74 2441.7 2429.8 2546.5 4.2469 0.001004 2555.6 2564.6 2573.5 35 40 45 5.6291 0.001006 7.3851 0.001008 9.5953 25.205 19.515 15.251 2261.9 2247.7 2429.4 2436.1 146.64 167.53 188.44 2417.9 2406.0 -2394.0 0.001010 2582.4 209.33 2233.4 2219.1 2204.7 2190.3 50 12.352 2382.0 0.001012 0.001015 0.001017 12.026 9.5639 7.6670 6.1935 2442.7 2449.3 209.34 2591.3 0.7038 7.3710 8.0748 15.763 55 60 65 0.7680 7.2218 7.9898 0.8313 0.8937 6.9360 7.8296 0.9551 6.7989 7.754O 230.24 251.16 230.26 251.18 272.12 2369.8 2357.7 2600.1 2608.8 19.947 7.0769 7.9082 0.001020 0.001023 2455.9 2462.4 2468.9 25.043 272.09 293.04 2345.4 2333.0 2617.5 2626.1 70 31.202 5.0396 2175.8 293.07 313.99 75 80 2161.3 2146.6 2131.9 2475.3 2481.6 38.597 0.001026 0.001029 0.001032 4.1291 3.4053 2.8261 314.03 2320.6 2308.0 2295.3 2282.5 2269.6 1.0158 6.6655 7.6812 1.0756 6.5355 7.6111 1.1346 6.4089 7.5435 1.1929 1.2504 6.1647 7.4151 2634.6 2643.0 47.416 57.868 70.183 334.97 355.96 335.02 356.02 85 90 2487.8 2117.0 2102.0 2494.0 2500.1 2651.4 2659.6 2667.6 6.2853 7.4782 0.001036 0.001040 2.3593 1.9808 376.97 398.00 377.04 398.09 95 84.609 101.42 120.90 143.38 169.18 2087.0 2071.8 2056.4 2040.9 100 0.001043 0.001047 0.001052 1.6720 1.4186 419.06 2506.0 419.17 2675.6 2683.4 2691.1 2698.6 2706.0 2256.4 1.3072 6.0470 7.3542 2511.9 2517.7 105 440.15 461.27 440.28 461.42 2243.1 110 115 0.001056 0.001060 1.2094 1.0360 0.89133 2229.7 2216.0 2202.1 1.3634 5.9319 7.2952 1.4188 5.8193 7.2382 1.4737 5.7092 7.1829 2523.3 2528.9 482.42 482.59 503.81 120 198.67 503.60 2025.3 1.5279 5.6013 7.1292 125 130 135 232.23 270.28 313.22 0.001065 0.001070 0.001075 0.001080 0.001085 0.77012 0.66808 0.58179 524.83 546.10 567.41 2009.5 1993.4 1977.3 2534.3 2539.5 2544.7 525.07 546.38 567.75 2713.1 2720.1 2726.9 2188.1 2173.7 1.5816 5.4956 7.0771 1.6346 5.3919 7.0265 140 145 361.53 415.68 0.50850 0.44600 2549.6 2554.4 2159,1 2144.3 2129.2 1.6872 5.2901 6.9773 1.7392 5.1901 6.9294 1.7908 5.0919 6.8827 588.77 1960.9 1944.2 589.16 610.64 2733.5 610.19 2739.8 150 155 476.16 543.49 0.001091 0.001096 0.39248 0.34648 631.66 653.19 674.79 1927.4 1910.3 1893.0 2113.8 2098.0 1.8418 4.9953 6.8371 1.8924 1.9426 2559.1 632.18 653.79 2745.9 2563.5 2567.8 2571.9 2575.7 2751.8 2757.5 2762.8 4.9002 6.7927 4.8066 6.7492 160 165 170 618.23 700.93 792.18 0.001102 0.001108 0.001114 0.30680 0.27244 0.24260 696.46 718.20 1875.4 1857.5 675.47 697.24 719.08 2082.0 2065.6 1.9923 4.7143 6.7067 2.0417 2048.8 2767.9 4.6233 6.6650 175 892.60 1002.8 1123.5 1255.2 0.001121 0.21659 740.02 1839.4 2579.4 741.02 2031.7 2772.7 2.0906 4.5335 6.6242 0.001127 0.001134 0.001141 0.001149 0.001157 761.92 783.91 763.05 785.19 807.43 4.4448 6.5841 180 185 190 0.19384 1820.9 1802.1 1783.0 2582.8 2586.0 2589.0 2014.2 1996.2 1977.9 2777.2 2781.4 2.1392 2.1875 4.3572 6.5447 2.2355 4.2705 6.5059 2.2831 0.17390 2785.3 2788.8 2792.0 0.15636 806.00 828.18 850.46 195 4.1847 6.4678 1398.8 1554.9 0.14089 0.12721 1763.6 1743.7 2591.7 2594.2 829.78 852.26 1959.0 1939.8 200 2.3305 4.0997 6.4302
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