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 Thermodynamics
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 Thermodynamics
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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Heat Exchangers
Heat exchangers are the types of equipment that are primarily employed to transfer the thermal energy from one fluid to another, provided that one of the fluids should be at a higher thermal energy content than the other fluid.
Heat Exchanger
The heat exchanger is a combination of two words ''Heat'' and ''Exchanger''. It is a mechanical device that is used to exchange heat energy between two fluids.
Question
Single - shell , two - tube pass heat exchanger with surface area 0.4 m² and overall heat transfer coefficient of 1800 W / m²K ; 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.
Transcribed Image Text: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.
916
Thermodynamics
TABLE A-4
Saturated water-Temperature table
Specific volume,
m/kg
Internal energy,
k/kg
Enthalpy,
KJ/kg
Entropy,
kJ/kg- K
Sat.
Evap., vapor,
Sat.
Sat.
Sat.
Sa.
liquid,
Sa.
Sat.
Sat.
Sat.
liquid, Evap., vapor,
Temp., press.,
T°C
liquid,
vapor,
liquid,
Evap.,
vapor,
Pat kPa
0.6117
0.8725 0.001000
1.2281
1.7057 0.001001
2.3392 0.001002
2374.9 2374.9
2381.8
2388.7
0.001 2500.9
21.020
42.022 2477.2
2500.9
2510.1
2519.2
2528.3
2537.4
0.0000 9.1556 9.1556
0.0763 8.9487 9.0249
0.1511 8.7488 8.8999
0.2245 8.5559 8.7803
0.2965 8.3696 8.6661
0.01
0.001000
206.00
147.03
106.32
77.885
57.762
0.000
21.019
42.020
62.980
83.913
2360.8
2489.1
2346.6
2332.5
2318.4 2402.3
10
0.001000
15
20
2395.5
62.982 2465.4
83.915 2453.5
104.83
125.74
146.64
25
3.1698 0.001003
4.2469
5.6291
7.3851
9.5953
43.340
32.879
25.205
19.515
15.251
104.83
125.73
146.63
167.53
188.43
2304.3
2290.2
2276.0
2261.9
2409.1
2415.9
2422.7
2429.4
2436.1
2441.7
2429.8
2417.9
2406.0
-2394.0
2546.5
2555.6
2564.6
2573.5
2582.4
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
30
35
0.001004
0.001006
0.001008
0.001010
40
45
167.53
2247.7
188.44
50
55
60
65
70
12.352
15.763
19.947
25.043
31.202
12.026
9.5639
7.6670
6.1935
5.0396
209.33
230.24
251.16
2233.4
2219.1
2204.7
2442.7
2449.3
2455.9
2462.4
2468.9
2382.0
0.001012
0.001015
0.001017
0.001020
0.001023
209.34
230.26
251.18
2591.3
2600.1
0.7038 7.3710 8.0748
0.7680 7.2218 7.9898
0.8313 7.0769 7.9082
0.8937 6.9360 7.8296
0.9551 6.7989 7.7540
2369.8
2357.7
2345.4
2333.0
2608.8
2617.5
2626.1
272.09
2190.3
2175.8
272.12
293.04
293.07
75
2161.3
2475.3
38.597
47.416
57.868
70.183
84.609
1.0158 6.6655 7.6812
1.0756
1.1346 6.4089 7.5435
1.1929 6.2853 7.4782
1.2504 6.1647 7.4151
0.001026
0.001029
4.1291
3.4053
2.8261
2.3593
1.9808
313.99
80
85
90
314.03
335.02
356.02
377.04
398.09
2320.6 2634.6
2308.0
2295.3
2282.5
2269.6
334.97
2146.6
2131.9
2117.0 2494.0
2102.0 2500.1
2481.6
2643.0
2651.4
2659.6
2667.6
6.5355 7.6111
2487.8
0.001032
0.001036
0.001040
355.96
376.97
398.00
95
101.42
120.90
143.38
169.18
198.67
0.001043
0.001047
0.001052
0.001056
0.001060
2256.4
2243.1
2229.7
2216.0 2698.6
2202.1
100
1.6720
1.4186
419.06
440.15
461.27
482.42
503.60
2087.0
2071.8
2056.4
2040.9
2025.3
2506.0
105
110
115
1.2094
1.0360
O.89133
2511.9
2517.7
2523.3
2528.9
419.17
440.28
461.42
2675.6
2683.4
1.3072 6.0470 7.3542
1.3634 5.9319 7.2952
1.4188 5.8193 7.2382
1.4737 5.7092 7.1829
1.5279 5.6013 7.1292
2691.1
482.59
120
503.81
2706.0
125
130
135
140
145
232.23
270.28
313.22
361.53
0.001065
0.001070
0.001075
0.001080
0.001085
2534.3
2539.5
2544.7
2549.6
0.77012
0.66808
524.83
546.10
567.41
588.77
610.19
2009.5
1993.4
525.07
2188.1
2713.1
1.5816 5.4956 7.0771
1.6346 5.3919 7.0265
546.38
567.75
589.16
2720.1
2159,1 2726.9
2144.3
2173.Z
0.58179
0.50850
0.44600
1977.3
1960.9
1944.2
1.6872 5.2901 6.9773
1.7392 5.1901 6.9294
1.7908 5.0919 6.8827
2733.5
415.68
2554.4
610.64
2129.2
2739.8
476.16
543.49
618.23
700.93
792.18
0.001091
0.001096
0.001102
0.001108
0.39248
0.34648
0.30680
150
1927.4
1910.3 2563.5
1893.0
1875.4
2559.1
155
160
165
631.66
653.19
674.79
696.46
718.20
632.18
653.79
675.47
697.24
719.08
2098.0
2082.0
2065.6
2113.8 2745.9
2751.8
2757.5
2762.8
2767.9
1.8418 4.9953 6.8371
1.8924 4.9002 6.7927
1.9426
1.9923 4.7143 6.7067
2.0417 4.6233 6.6650
2567.8
2571.9
4.8066 6.7492
0.27244
170
0.001114
0.24260
1857.5
2575.7
2048.8
2.0906 4.5335 6.6242
2014.2 2777.2 2.1392 4.4448 6.5841
2.1875 4.3572 6.5447
2.2355 4.2705 6.5059
2.2831 4.1847 6.4678
175
2772.7
892.60
1002.8
1123.5
1255.2
0.001121
0.001127
ם 0.00
0.001141
0.001149
0.001157
0.21659
0.19384
0.17390
0.15636
0.14089
740.02
761.92
783.91
806.00
828.18
850.46
1839.4
2579.4
2582.8
2586.0
1783.0 2589.0
741.02
763.05
785.19
807.43
2031.7
180
1820.9
1996.2 2781.4
1977.9 2785.3
185
1802.1
190
195
200
1398.8
1554.9
1763.6 2591.7
829.78
1959.0
2788.8
0.12721
1743.7
2594.2
852.26
1939.8
2792.0
2.3305 4.0997 6.4302
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